Bosche Sensors

Sensors

Angular-position sensors

Steering-wheel-angle sensors ±780° 6Throttle-valve angular-position sensors 88° 8

Rotational-speed sensors

Rotational speeds and angle 12Rotational speeds 14

Acceleration sensors

Pyroelectric sensors up to ±5 g 16Piezoelectric sensors up to 35 g 18Surface-type micromechanical sensors±10 g to ±50 g 20Piezoelectric vibration sensors 22Vibration sensors for signal evaluation 24

Pressure sensors

Pressure measurementIn gases from –100 kPa to 5 kPa 26In gases and liquid mediums from –2.5 kPa to +3.75 kPa 28In atmosphere from 60 kPa to 115 kPa 30In gases up to 250 kPa 32In gases up to 400 kPa 34In gases and liquid mediums up to 600 kPa 40

Pressure sensors up to 1800 bar (180 MPa) 45

Temperature sensors

Air temperatures from –40 °C to 130 °C 50Liquid temperatures from –40 °C to 130 °C 52

Lambda oxygen sensors 58

Air-mass meters

Air-mass flow rates up to 1080 kg/h 54Air-mass flow rates up to 1000 kg/h 56

Techniques and applications 2CAN-Bus 4

Enquiry data sheet 61

We reserve the right to make technical changes.

Yaw-rate sensors 10

22223_1021En_A001 12.07.2001 9:44 Uhr Seite 1

2 Sensors A B

Techniques and applications

This catalog features the mostimportant technical data re-quired for selecting a givensensor. To date, the sensorslisted have all been used inautomotive applications, buttheir universal and highly ver-satile characteristics also makethem ideally suitable for indus-trial applications. For instancein:

Manufacturing engineering Mechanical engineering Automation Materials handling and

conveying Heating and air-conditioning Chemical and process

engineering Environmental and conser-

vation technology Installation and plant

engineering

Brief descriptions and examplesof application are to be found inthe Table below.For the applications listed below,prior clarification of the technicalsuitability is imperative. ThisCatalog only lists those productswhich are available from seriesmanufacture. If your problemcannot be solved with this rangeof products, please inform of usof your requirements using theEnquiry Data Sheet.

Sensors Automotive application Examples of non-automotive applications

Angular position sensors measure simpleangular settings and changes in angle.

Rotational-speed sensors measurerotational speeds, positions and angles inexcess of 360°.

Spring-mass acceleration sensors measurechanges in speed, such as are common inroad traffic.

Bending-beam acceleration sensorsregister shocks and vibration which arecaused by impacts on rough/unpaved roadsurfaces or contact with kerbstones.

Piezoelectric acceleration sensorsmeasure shocks and vibration which occurwhen vehicles and bodies impact against anobstacle.

Yaw sensors measure skidding movements,such as occur in vehicles under road trafficconditions.

Piezoelectric vibration sensors measurestructure-borne vibrations which occur atengines, machines, and pivot bearings.

Absolute-pressure sensors measure thepressure ranges from about 50% to 500%of the earth’s atmospheric pressure.

Differential-pressure sensors measuredifferential gas pressures, e.g. for pressure-compensation purposes.

Temperature sensors measure the tempera-ture of gaseous materials and, inside a suit-able housing, the temperatures of liquids inthe temparature range of the earth’s atmo-sphere and of water.

Lambda oxygen sensors determine theresidual oxygen content in the exhaust gas.

Air-mass meters measure the flow rate ofgases.

Throttle-valve-angle measurement for enginemanagement on gasoline (SI) engines.

Wheel-speed measurement for ABS/TCS,engine speeds, positioning angle for enginemanagement, measurement of steering-wheel angle, distance covered, andcurves/bends for vehicle navigation systems.

Registration of vehicular acceleration anddeceleration. Used for the Antilock BrakingSystem (ABS) and the Traction ControlSystem (TCS).

For engine management, detection ofvibration on rough/unpaved road surfaces.

Impact detection used for triggering airbagsand belt tighteners.

Used on the vehicle dynamics control(Electronic Stability Program, ESP) formeasuring yaw rate and lateral acceleration,and for vehicle navigation sensors.

Engine-knock detection for anti-knock controlin engine-management systems.

Manifold vacuum measurement for enginemanagement. Charge-air-pressure measure-ment for charge-air pressure control, altitude-pressure-dependent fuel injection for dieselengines.

Pressure measurement in the fuel tank,evaporative-emissions control systems.

Display of outside and inside temperature,control of air conditioners and inside temper-ature, control of radiators and thermostats,measurement of lube-oil, coolant, and enginetemperatures.

Control of A/F mixture for minimization of pollutant emissions on gasoline and gasengines.

Measurement of the mass of the air drawn inby the engine.

Door/window opening angle, setting-leverangles in monitoring and control installations.

Proximity or non-contact measurement ofrotational speed, displacement and angularmeasurement, definition of end and limitsettings for industrial machines, robots, andinstallations of all types.

Acceleration and deceleration measurement for safety, control, protective systems in lifts,cable railways, fork-lift trucks, conveyor belts,machines, wind power stations.

Forced switch-off for machines, industrialrobots, manufacturing plant, and gaming ma-chines in case of sudden acceleration or decel-eration caused by shock or impact.

Detection of impact in monitoring/surveillanceinstallations, detection of foreign bodies in com-bine harvesters, filling machines, and sortingplants. Registration of score during riflemancompetitions.

Stabilization of model vehicles and airplanes,safety circuits in carousels and other entertain-ment devices on fairgrounds etc.

Machine-tool safety, cavitation detection, pivot-bearing monitoring, structure-borne-noisedetection in measurement systems.

Pressure control in electronic vacuum cleaners,monitoring of pneumatic production lines,meters for air-pressure, altitude, blood pres-sure, manometers, storm-warning devices.

Monitoring of over and underpressure.Pressure limiters, filled-level measurement.

Thermometers, thermostats, thermal protection,frost detectors, air-conditioner control, tempera-ture and central heating, refrigerant-tempera-ture monitoring, regulation of hot-water andheat pumps.

Pollutants reduction during combustion, smokemeasurement, gas analysis.

Flow-rate measurement for gases on testbenches and in combustion plant.

22223_1021En_002-003 12.07.2001 9:45 Uhr Seite 2

B A Sensors 3

IP degrees of protection

Valid for the electrical equip-ment of road vehicles as perDIN 40050 (Part 9). Protection of the electricalequipment inside the enclosureagainst the effects of solidforeign objects including dust. Protection of the electricalequipment inside the enclosureagainst the ingress of water. Protection of personsagainst contact with dangerousparts, and rotating parts, insidethe enclosure.

Structure of the IP code

IP 2 3 C MCode letters

First characteristic numeral0...6 or letter X

Second characteristic numeral0...9 or letter X

Additional letter (optional)A, B, C, D

Supplementary letter (optional)M, SK1)

If a characteristic numeral is not given, it must be superseded by the letter “X” (i.e. “XX” if both characteristic numerals are not given).The supplementary and/or additional letters can be omitted at will, and need not besuperseded by other letters.1) The supplementary letter “K” is located either directly after the first characteristicnumerals 5 and 6, or directly after the second characteristic numerals 4, 6 and 9.2) During the water test. Example: IP16KB protection against the ingress of solid foreignbodies with diameter ≥ 50 mm, protection against high-pressure hose water, protectionagainst access with a finger.

1) 2)

Comments on IP code1st charac- Protection of Persons 2nd charac- Protection of Additional Protection of Additionalteristic numeral electrical equip- teristic numeral electrical equip- letter persons against letterand supple- ment against and supple- ment against (optional) contact with (optional)mentary letter ingress of solid mentary letter the ingress hazardous partsK foreign objects K of water0 Non-protected Non-protected 0 Non-protected A Protection M Movable parts

against contact of the equip-with back of hand ment are in

motion2)

1 Protection against Protection 1 Protection B Protection S Movable partsforeign bodies against contact against vertically against contact of the equip-Ø ≥ 50 mm with back dripping water with finger ment are

of hand stationary2)

2 Protection against Protection 2 Protection C Protection K For the electri-foreign bodies against contact against dripping against contact cal equipmentØ ≥ 12.5 mm with finger water (at an with tool of road

angle of 15°) vehicles3 Protection against Protection 3 Protection D Protection

foreign bodies against contact against against contact Ø ≥ 2.5 mm with tool splash water with wire

4 Protection against Protection 4 Protectionforeign bodies against contact againstØ ≥ 1.0 mm with wire spray water

5K Dust-protected Protection 4K Protectionagainst contact against high-with wire pressure

spray water6K Dust-proof Protection 5 Protection

against contact against jetswith wire of water

6 Protectionagainst power-ful jets of water

6K Protection against high-pressure jets of water

7 Protection against temporaryimmersion

8 Protectionagainst con-tinuous immersion

9K Protectionagainst high-pressure/steam-jet cleaners

22223_1021En_002-003 12.07.2001 9:45 Uhr Seite 3

4 Sensors A B

CAN-BusController Area Network

Present-day motor vehicles areequipped with a large numberof electronic control units(ECUs) which have to ex-change large volumes of datawith one another in order toperform their various functions.The conventional method of

doing so by using dedicateddata lines for each link is nowreaching the limits of its capa-bilities. On the one hand, itmakes the wiring harnesses so complex that they becomeunmanageable, and on theother the finite number of pins

on the connectors becomes thelimiting factor for ECU develop-ment. The solution is to befound in the use of specialized,vehicle-compatible serial bussystems among which the CANhas established itself as thestandard.

ApplicationsThere are four areas of application forCAN in the motor vehicle, each with itsown individual requirements:

Real-time applicationsReal-time applications, in which electricalsystems such as Motronic, transmission-shift control, electronic stability-control sy-stems are networked with one another, areused to control vehicle dynamics.Typical data transmission rates range from125 kbit/s to 1 Mbit/s (high-speed CAN) inorder to be able to guarantee the real-timecharacteristics demanded.

Multiplex applicationsMultiplex applications are suitable for situa-tions requiring control and regulation ofbody-component and luxury/conveniencesystems such as air conditioning, centrallocking and seat adjustment. Typical data transmission rates are be-tween 10 kbits and 125 kbit/s (low-speedCAN).

Mobile-communications applicationsMobile-communications applicationsconnect components such as the naviga-tion system, cellular phone or audio systemwith central displays and controls. Thebasic aim is to standardize control opera-tions and to condense status informationso as to minimize driver distraction.Data transmission rates are generally be-low 125 kbit/s; whereby direct transmis-sion of audio or video data is not possible.

Diagnostic applicationsDiagnostic applications for CAN aim tomake use of existing networking for thediagnosis of the ECUs incorporated in thenetwork. The use of the “K” line (ISO9141), which is currently the normal prac-tice, is then no longer necessary.The data rate envisaged is 500 kbit/s.

Bus configurationCAN operates according to the multi-master principle, in which a linear busstructure connects several ECUs of equalpriority rating (Fig. 1). The advantage ofthis type of structure lies in the fact that amalfunction at one node does not impairbus-system access for the remaining de-vices. Thus the probability of a total systemfailure is substantially lower than with otherlogical architectures (such as ring or activestar structures). When a ring or active starstructure is employed, failure at a singlenode or at the CPU is sufficient to cause atotal failure.

Content-based addressingAddressing is message-based when usingCAN. This involves assigning a fixed identi-fier to each message. The identifier classi-fies the content of the message (e.g., en-gine speed). Each station processes onlythose messages whose identifiers arestored in its acceptance list (message filter-ing, Fig. 2). Thus CAN requires no stationaddresses for data transmission, and thenodes are not involved in administeringsystem configuration. This facilitates adap-tation to variations in equipment levels.

Logical bus statesThe CAN protocol is based on two logicalstates: The bits are either “recessive”(logical 1) or “dominant” (logical 0). Whenat least one station transmits a dominantbit, then the recessive bits simultaneouslysent from other stations are overwritten.

Priority assignmentsThe identifier labels both the data contentand the priority of the message being sent.Identifiers corresponding to low binarynumbers enjoy a high priority and viceversa.

Bus accessEach station can begin transmitting itsmost important data as soon as the bus isunoccupied. When several stations start totransmit simultaneously, the system re-sponds by employing “Wired-AND” arbitra-tion to sort out the resulting contentionsover bus access. The message with thehighest priority is assigned first access,without any bit loss or delay. Transmittersrespond to failure to gain bus access byautomatically switching to receive mode;

they then repeat the transmission attemptas soon as the bus is free again.

Message formatCAN supports two different data-frame for-mats, with the sole distinction being in thelength of the identifier (ID). The standard-format ID is 11 bits, while the extendedversion consists of 29 bits. Thus the trans-mission data frame contains a maximum of130 bits in standard format, or 150 bits inthe extended format. This ensures miminalwaiting time until the subsequent transmis-sion (which could be urgent). The dataframe consists of seven consecutive bitfields (Fig. 3 ):

“Start of frame”indicates the beginning of a message andsynchronizes all stations.“Arbitration field”consists of the message’s identifier and anadditional control bit. While this field isbeing transmitted, the transmitter accom-panies the transmission of each bit with acheck to ensure that no higher-prioritymessage is being transmitted (whichwould cancel the access authorization).The control bit determines whether themessage is classified under “data frame”or “remote frame”.“Control field”contains the code indicating the number ofdata bytes in the data field.“Data field’s”information content comprises between 0 and 8 bytes. A message of data length 0can be used to synchronize distributedprocesses.“CRC field”(Cyclic Redundancy Check) contains thecheck word for detecting possible trans-mission interference.“Ack field”contains the acknowledgement signalswith which all receivers indicate receipt ofnon-corrupted messages.“End of frame”marks the end of the message.

22223_1021En_004-005 12.07.2001 9:48 Uhr Seite 4

B A Sensors 5

Transmitter initiativeThe transmitter will usually initiate a datatransfer by sending a data frame. However,the receiver can also request data from thetransmitter. This involves the receiver send-ing out a “remote frame”. The “data frame”and the corresponding “remote frame”have the same identifier. They are distin-guished from one another by means of thebit that follows the identifier.

Error detectionCAN incorporates a number of monitoringfeatures for detecting errors. Theseinclude:– 15 Bit CRC (Cyclic Redundancy

Check): Each receiver compares theCRC sequence which it receives withthe calculated sequence.

– Monitoring: Each transmitter comparestransmitted and scanned bit.

– Bit stuffing: Between “start of frame”and the end of the “CRC field”, each“data frame” or “remote frame” may con-tain a maximum of 5 consecutive bits ofthe same polarity. The transmitter followsup a sequence of 5 bits of the samepolarity by inserting a bit of the oppositepolarity in the bit stream; the receiverseliminate these bits as the messagesarrive.

– Frame check: The CAN protocol con-tains several bit fields with a fixed formatfor verification by all stations.

Error handlingWhen a CAN controller detects an error, itaborts the current transmission by sendingan “error flag”. An error flag consists of 6 dominant bits; it functions by deliberatelyviolating the conventions governing stuffingand/or formats.

Fault confinement with local failureDefective stations can severely impair theability to process bus traffic. Therefore, theCAN controllers incorporate mechanismswhich can distinguish between intermittentand permanent errors and local stationfailures. This process is based on statisti-cal evaluation of error conditions.

ImplementationsIn order to provide the proper CPU sup-port for a wide range of different require-ments, the semiconductor manufacturershave introduced implementations repre-senting a broad range of performancelevels. The various implementations differneither in the message they produce, norin their arrangements for responding toerrors. The difference lies solely in the typeof CPU support required for messageadministration.As the demands placed on the ECU’s processing capacity are extensive, theinterface controller should be able to ad-

minister a large number of messages andexpedite data communications with, as faras possible, no demands on the CPU’scomputational resources. Powerful CANcontrollers are generally used in this typeof application.The demands placed on the controllers bymultiplex systems and present-day mobilecommunications are more modest. For thatreason, more basic and less expensivechips are preferred for such uses.

StandardizationCANs for data exchange in automotiveapplications have been standardized bothby the ISO and the SAE – in ISO 11519-2for low-speed applications ≤ 125 kbit/sand in ISO 11898 and SAE J 22584 (cars)and SAE J 1939 (trucks and busses) forhigh-speed applications >125 kbit/s. Thereis also an ISO standard for diagnosis viaCAN (ISO 15765 – Draft) in the course ofpreparation.

Transmissionshift controlStation 1

Engine managementStation 2

ABS/TCS/ESPStation 3

Instrument clusterStation 4

CAN

1 Linear bus structure.

Makeready

Sendmessage

CANStation 1

CANStation 2

Bus

CANStation 3

CANStation 4

Accept

Selection

Reception

Accept

Selection Selection

Reception Reception

2 Message filtering.

Data Frame

Message Frame

Start of FrameArbitration Field

Control FieldData Field

CRC FieldACK Field

End ofFrame

InterFrameSpace

1*1

012* 6* 16* 2* 7* 3* IDLEIDLE 0...64*

3 Message format.

Source: Texts and illustra-tions on the subject of

CAN-Bus are taken from theBosch Automotive Handbook,

5th Edition, 2000.The Automotive Handbook

contains a very wide variety ofinformation covering the whole

range of modern-day automotiveengineering.

Further information on sensors in thevehicle can be taken from the Bosch

Yellow Jacket publication “AutomotiveSensors” which is scheduled to appear

in the Autumn.

22223_1021En_004-005 01.02.2002 10:45 Uhr Seite 5

6 Steering-wheel-angle sensors A B

Steering-wheel-angle sensor Measurement of angles from –780° to +780°

A

B

1

2

36

7

5

4

Installation possibilities.A Steering-column switch, B Steering column

Design and function.1 Steering column, 2 AMR sensor element, 3 Measuring gear with m teeth, 4 Evaluation electronics, 5 Magnets, 6 Measuring gear withn>m teeth, 7 Gearwheel with m+1 teeth

Technical data / Range

Order No. 0 265 005 411 1)

Steering-wheel-angle sensor/Type LWS 3Measuring range, angle –780°...+779.9°Measuring range, acceleration 0...1016°/sSensitivity and resolution throughout the measuring range, angle 0.1°Sensitivity and resolution throughout the measuring range, acceleration 4°/sNon-linearity throughout measuring range –2.5°...+2.5°Hysteresis throughout measuring range 0°...5°Rate of steering-wheel-angle change, max. –2000°...+2000°/sRate of steering-wheel-angle change, displayed 0°...1016°/s

General dataOperating temperature –40...+85 °CStorage temperature –40...+50 °CSupply voltage 12 V nominalSupply-voltage range UV 8...16 VCurrent consumption at 12 V < 150 mA1) Details of further designs upon request

ApplicationThe steering-wheel-angle sensor was de-veloped for use with vehicle dynamicssystems (ESP*).Due to integral plausibility tests, and spe-cial self-diagnosis functions, this steering-wheel-angle sensor is highly suitable forapplication in safety systems.

Design and functionWhen the steering wheel is turned it rota-tes a gearwheel which in turn drives twoother special measuring gears which in-corporate magnets. AMR elements whichchange their resistance as a function of thedirection of magnetic field register the an-gular position of the magnets. These ana-log measured values are then inputted tothe microprocessor via an A/D converter.The number of teeth on one measuringgear differs to that on the other, whichmeans that they therefore change theirrotational position at different speeds. By combining both the actual angles ofrotation, it is possible to calculate the totalangle of rotation. After a number of rota-tions of the steering wheel, each of themeasuring gears has returned to its initialposition. Using this principle, it becomespossible to cover a measurement range ofseveral steering-wheel rotations without theneed to use a revolution counter. The steering-wheel angle is outputted inthe form of an absolute angle across thetotal steering-column rotation range. Oneof this sensor’s special features is the factthat the (correct) angle-of-rotation is avail-able immediately the ignition is switchedon, without the steering wheel having beenmoved (“True-Power-On”). The steering-wheel angle and the steering-wheel speedare outputted via CAN. * ESP = Electronic Stability Program

P “True-Power-On” function.P Multiple-rotation function.P CAN interface.

æCAN

22223_1021En_006-007 12.07.2001 10:13 Uhr Seite 6

60

0

ø 8,3

1 2 3

4 5 6 7

79 ø 34

ø 32,7

23

1

84

26

0,5

0,8

1,8

Y

Y

H

P

M

A

B

X

± 0,1

8 ± 0,5

14,3 ± 0,5

6,7 ± 0,5

± 0,5

ø 32,7 ± 0,5

27

± 0,

5

49,1

± 0,

5

17,6

± 0,

2

35,1

22,7

± 0,

1

± 0,

2

79±

0,5

2,8

± 0,

3

30,5

max

.

30,7

+ 0,

2-

0,1

B A Steering-wheel-angle sensors 7

Steering-wheel angle

Counterclockwise Clockwise

Out

put s

igna

l

0°700° -780°-780°

0°

700°

4 5

1 2 3

6 7

Dimension drawings.A Distance hub to mountB Distance LWS (steering-wheel-angle sensor) to steering-column mounting flange H Mounting bracketM Mounting directionP Space for mating connector and wiring harnessX Connector-pin assignment

Steering-column installation dimensions

Characteristic curve.

CAN-Driver

Micro-processor

A/Dconverter

AMRelement

AMRelement

CAN-Bus

Block diagram.

Connector-pin assignment.Pin 1 GroundPin 2 12 VPin 3 CAN highPin 4 CAN lowPin 5 –Pin 6 –Pin 7 –

Further application possibilitiesUsing the standardized CAN-Bus, thesteering-wheel angle information can beused for such systems as electronic stabi-lity program (ESP), navigation and electricpower steering.Details of mechanical connection variants,as well as of the electrical interface areavailable on request.

22223_1021En_006-007 12.07.2001 10:13 Uhr Seite 7

8 Angular-position sensors A B

Throttle-valve angular-position sensorMeasurement of angles up to 88°

00

0,05

0,941,00

Angle of rotation ϕ

Volta

ge ra

tio

N

T

1096

100°w

A AL

UA

UV

ϕ

Angle of rotation ϕwϕ

30 60 90°23000,05

0,40

0,60

0,800,9125

1,00

0,20

A A

Volta

ge ra

tioU

AU

V

2 3

88

Characteristic curve 1.A Internal stop, L Positional tolerance of thewiper when fitted, N Nominal characteristiccurve, T Tolerance limit, æW Electrically usable angular range.

Characteristic curves 2 and 3.A Internal stop,æW Electrically usable angular range.


Part number 0 280 122 001 0 280 122 201Diagram 1; 2 3Useful electrical angular range Degree ≤ 86 ≤ 88Useful mechanical angular range Degree ≤ 86 ≤ 92Angle between the internal stops

(must not be contacted whensensor installed) Degree ≥ 95 –

Direction of rotation Optional CounterclockwiseTotal resistance (Terms. 1–2) kΩ 2 ±20 % –Wiper protective resistor (wiper

in zero setting, Terms. 2–3) Ω 710...1380 –Operating voltage UV V 5 5Electrical loading Ohmic resistance Ohmic resistancePermissible wiper current µA ≤ 18 ≤ 20Voltage ratio from stop to stop

Chara. curve 1 0.04 ≤ UA/UV ≤ 0.96 –Voltage ratio in area 0...88 °C

Chara. curve 2 – 0.05 ≤ UA2/UV ≤ 0.985Chara. curve 3 – 0.05 ≤ UA3/UV ≤ 0.970

Slope of the nominal characteristic curve deg–1 0.00927 –Operating temperature °C –40...+130 –40...+85Guide value for permissible vibration

acceleration m · s–2 ≤ 700 ≤ 300Service life (operating cycles) Mio 2 1.2

ApplicationThese sensors are used in automotiveapplications for measuring the angle ofrotation of the throttle valve. Since thesesensors are directly attached to the throttle-valve housing at the end of the throttle-shaft extension, they are subject to ex-tremely hostile underhood operating con-ditions. To remain fully operational, theymust be resistant to fuels, oils, saline fog,and industrial climate.

Design and functionThe throttle-valve angular-position sensor is a potentiometric sensor with a linearcharacteristic curve. In electronic fuel injec-tion (EFI) engines it generates a voltageratio which is proportional to the throttlevalve’s angle of rotation. The sensor’s rotoris attached to the throttle-valve shaft, andwhen the throttle valve moves, the sensor’sspecial wipers move over their resistancetracks so that the throttle’s angular positionis transformed into a voltage ratio. Thethrottle-valve angular-position sensor’s arenot provided with return springs.

DesignThe position sensor 0 280 122 001 hasone linear characteristic curve.The position sensor 0 280 122 201 hastwo linear characteristic curves.This permits particularly good resolution inthe angular range 0°...23°.

Explanation of symbolsUA Output voltageUV Supply voltageæ Angle of rotationUA2 Output voltage, characteristic curve 2UA3 Output voltage, characteristic curve 3

Accessories for 0 280 122 001Connector 1 237 000 039

Accessories for 0 280 122 201Plug housing 1 284 485 118Receptacles, 5 per pack,Qty. required: 4 1 284 477 121Protective cap, 5 per pack,Qty. required: 1 1 280 703 023

æR

P Potentiometic angular-position sensor with linearcharacteristic curve.P Sturdy construction forextreme loading.P Very compact.

22223_1021En_008-009 12.07.2001 9:47 Uhr Seite 8

11

6 -0,1

0,5 13

,5+1 -0

,3

M40,130,5 ± 0,124,5 ±

M4 2,3

min

.ø21

176° ±2°

2

-0,1

0+0

,02

4,5 ± 0,1 5

R 6,5

38

16

ø15,

1

3513

55 ± 0,2

68

ø15,

1D

10

ø8

-0,0

5

13

+0,2

-0,1

x 45

°

± 0,5

55 ±0,2

90° ±2°

A

B

C

D E

Ö Ö

Ö

2 M4

90°±

2,8°

12,5 -0,5

7,58,5

30°

ø25 m

in.

1+0,2

4,5

ø20

,5

ø21

7,5

R4

4,8 + 0,3

14°+2

°-1

°

10,5

59

± 0,3

h10

±0,3

54

722

20

39

67

8570 ± 0,2

ø21

D10

ø8

-0,0

5

4± 0

,05

± 0,2

x45°

70 ±0,2

FG

H

I

4321

L

X

K

X

1°7°

±

M4

9,7

± 0,135

30,5

± 0,1

2 ±0,2

4,6 ±0,3

16

A

B

31 2

B A Angular-position sensors 9

3 2 1( - )( + )

3 2 1( - ) ( + )

S2 S1

4 3 2 1( ) ( )

Dimension drawings.A Plug-in connection, B O-ring 14.65 x 2 mm, C Fixing dimensions for throttle-valve housing, D Clockwise rotation 1), E Counterclockwise rotation 1), Ö Direction of throttle-valve opening. 1) Throttle valve in idle setting.

0 280 122 001

F O-ring 16.5 x 2.5 mm, G 2 ribs, 2.5 mm thick, H Plug-in connection, I Blade terminal, K This mounting position is only permissible when the throttle-valve shaft issealed against oil, gasoline, etc., Ö Direction of throttle-valve opening,L Fixing dimensions for throttle-valve potentiometer.

0 280 122 201

Diagram 1. Diagram 2. Diagram 3.Throttle valve in idle setting.

22223_1021En_008-009 12.07.2001 9:47 Uhr Seite 9

10 Yaw sensor A B

Yaw sensor (gyrometer)with micromechanical acceleration sensor


Part number 0 265 005 258

Yaw sensor DRS-MM1.0RMaximum yaw rate Ωmax. about the rotary axis (Z-axis) ±100°/sMinimum resolution ∆Ω ±0.2°/sSensitivity 18 mV/°/sChange of sensitivity ≤ 5%Offset yaw rate 2°/s 1)Change of offset ≤ 4°/sNon-linearity, max. deviation from best linear approximation ≤ 1% FSOReady time ≤ 1 sDynamic response ≥ 30 HzElectrical noise (measured with 100 Hz bandwidth) ≤ 5 mVrms

Linear acceleration sensorMaximum acceleration αqmax ±1.8 gSensitivity 1000 mV/gChange of sensitivity ≤ 5%Offset 0 g 1)Change of offset ≤ 0,06 gNon-linearity, max. deviation from best linear approximation ≤ 3% FSOReady time ≤ 1.0 sDynamic response ≥ 30 HzElectrical noise (measured with 100 Hz bandwidth) ≤ 5 mVrms

General dataOperating-temperature range –30...+85 °CStorage-temperature range –20...+50 °CSupply voltage 12 V nominalSupply-voltage range 8.2...16 VCurrent consumption at 12 V < 70 mAReference voltage 2.5 V ±50 mV 1)1) Zero point is 2.5 V (reference).

Accessories 2)

Plug housing – Qty. required: 1 AMP-No: 1-967 616-1Contact pins for 0.75 mm2 Qty. required: 6 AMP-No: 965 907-1Gaskets for Ø 1.4...1.9 mm2 Qty. required: 6 AMP-No: 967 067-12) To be obtained from AMP Deutschland GmbH, D-63225 Langen,

Tel. 0 61 03/7 09-0, Fax 0 61 03/7 09-12 23, E-Mail: [email protected]

DesignThe complete unit is comprised of a yaw sensor and an acceleration sensor,together with evaluation electronics. Thesecomponents are all mounted on a hybridand hermetically sealed in a metal housing.

ApplicationThis sensor is used in automotive engineer-ing for the vehicle dynamics control(Electronic Stability Program, ESP) andmeasures the vehicle’s rotation around itsvertical axis, while at the same timemeasuring the acceleration at right anglesto the driving direction. By electronicallyervaluating the measured values, the sen-sor is able to differentiate between normalcornering and vehicle skidding movements.

Operating principleTwo oscillatory masses each have a con-ductor attached through which alternatingcurrent (AC) flows. Since both of the mas-ses are located in a constant magneticfield, they are each subjected to an electro-dynamic force which causes them tooscillate. If the masses are also subjectedto a rotational movement, Coriolis forcesare also generated. The resulting Coriolisacceleration is a measure for the yawrate.The linear acceleration values areregistered by a separate sensor element.

Installation information– Installation near to the vehicle’s center ofgravity– Max. reference-axis deviation transverseto the direction of movement ±3°– Refer to sketch on Page 9– Tightening torque for fastening screws: 6 +2/–1 Nm.

Explanation of symbolsΩ Yaw rateg Acceleration due to gravity

9.8065 m · s–2

aq Linear (transverse) acceleration

ΩU

P Compact system design withhighly integrated electronics.P Insensitive to mechanical orelectrical interference.P Simultaneous measurementof yaw rate and accelerationvertical to the rotary axis.P Extensive yaw-rate measur-ing range from 0.2...100 de-grees per second (correspondsto 2...1,000 rotations per hour).P Capacitive measuringconcept.

22223_1021En_010-011 12.07.2001 9:46 Uhr Seite 10

B A Yaw sensor 11

+

GND

DRS-OUT

Evaluation circuit

Oscilator

Yaw sensor

1. Coriolisacceleration

UC

Acceleration sensor U

C

UC

Oscilatorloop

Low pass filter

PLL

Offsetadjust

Sens.adjust

Offsetadjust

Sens.adjust

2. Coriolisacceleration

REF-OUT

LIN-OUTVDD

Test

m

VVt2

V t1ac

Ω

+1000.0

0.65 V

4.35 V

Out

put v

olta

ge U

A

1.0

2.0

3.0

4.0

5.0V

-100Yaw rate

Operating principle.ac Coriolis accelerationV Speed of oscillationΩ Angular velocity

ac = 2V x Ω

Deviation of Ω-axis toreference surface ±3°


Dimension drawings.F Forward driving directionS 6-pole plugRa Reference axisRf Reference surfaceac Acceleration direction

Block diagram.

A 42,6

+0,2-0,1

83,679,6

33

35±0,3

6280,2

12

33,1

35,1

6,1

S

F

RfRa

A

A-A

2 31

54 6

a

c

V

Ω

a

c

a c

Ω

Connector-pin assignment Pin 1 ReferencePin 2 BITEPin 3 12 VPin 4 Out: Yaw-rate sensorPin 5 Out: Acceleration sensorPin 6 Ground

22223_1021En_010-011 12.07.2001 9:46 Uhr Seite 11

12 Rotational-speed sensors A B

Inductive rotational-speed sensorsIncremental* measurement of angles and rotational speeds

2 3 4

5

6

8

S

N

xxxxxxxxxxxxxxxx

1

7

Wheel-speed sensor (principle).1 Shielded cable, 2 Permanent magnet,3 Sensor housing, 4 Housing block,5 Soft-iron core, 6 Coil, 7 Air gap,8 Toothed pulse ring with reference mark.

1

3

2

NS

3

1

2

NS

Diagram.Connections:1 Output voltage,2 Ground, 3 Shield.

Technical Data

Rotational-speed range n 1) min–1 < 20...7000Permanent ambient temperature in the cable area

For 0 261 210 104, 0 281 002 214 °C –40...+120For 0 261 210 147 °C –40...+130

Permanent ambient temperature in the coil area °C –40...+150Vibration stress max. m · s–2 1200Number of turns 4300 ±10Winding resistance at 20 °C 2) Ω 860 ±10 %Inductance at 1 kHz mH 370 ±15 %Degree of protection IP 67Output voltage UA 1) V 0...2001) Referred to the associated pulse ring.2) Change factor k = 1+0.004 (ϑW –20 °C); ϑW winding temperature

nU

P Non-contacting (proximity)and thus wear-free, rotational-speed measurement.P Sturdy design for exactingdemands.P Powerful output signal.P Measurement dependent ondirection of rotation.

ApplicationInductive rotational-speed sensors of thistype are suitable for numerous applicationsinvolving the registration of rotationalspeeds. Depending on design, theymeasure engine speeds and wheel speedsfor ABS systems, and convert thesespeeds into electric signals.

Design and functionThe soft-iron core of the sensor is sur-rounded by a winding, and located directlyopposite a rotating toothed pulse ring withonly a narrow air gap separating the two.The soft-iron core is connected to a perma-nent magnet, the magnetic field of whichextends into the ferromagnetic pulse ringand is influenced by it. A tooth locateddirectly opposite the sensor concentratesthe magnetic field and amplifies themagnetic flux in the coil, whereas themagnetic flux is attenuated by a toothspace. These two conditions constantlyfollow on from one another due to thepulse ring rotating with the wheel. Changesin magnetic flux are generated at the tran-sitions between the tooth space and tooth(leading tooth edge) and at the transitionsbetween tooth and tooth space (trailingtooth edge). In line with Faraday’s Law,these changes in magnetic flux induce anAC voltage in the coil, the frequency of which is suitable for determining therotational speed.

Range

Cable length Fig./ Order No.with plug Dimension

drawing360 ± 15 1 0 261 210 104553 ± 10 2 0 261 210 147450 ± 15 3 0 281 002 214

* A continuously changing variable is re-placed by a frequency proportional to it.

0 281 002 214, ..104

0 261 210 147

1

2

3

22223_1021En_012-013 12.07.2001 9:56 Uhr Seite 12

B A Rotational-speed sensors 13

19±0,1

O

±0,2

18

21,3

6+0,

63

13

R12

,5

300°

R7

-0,2

5

20,7

3,5R11

13

+0,3

19 ±0,2

+0,

64

12

27

39,5

15,5

450±15

5

+0,1-0,236,522,5

59±1

2 13

X

O±5°

90° 7,

6+0,

6

13±0

,527

25

26,5

12

570±10

814

5

+0,1-0,22421

45 ±1

3,5

20,7

-0,2

17,9

5 -0,

35

R7,5

R11

X

21,1

517

,95 -

0,35

X 2X

6,7

±5°

321

21

180

± 5°

R12,5

R7

R11ø 1

7,95

- 0,3

5

ø 1

8h9

19±

0,2

2718

+ 0,

15-

0,2

L = 360 ± 15

6,7+ 0,3

1214 10

8

45 ± 1

- 0,224+ 0,1

5

XX

ø 3

,5

Dimension drawings. The sensor generates one output pulse pertooth. The pulse amplitude is a function ofthe air gap, together with the toothed ring’srotational speed, the shape of its teeth, andthe materials used in its manufacture. Notonly the output-signal amplitude increaseswith speed, but also its frequency. Thismeans that a minimum rotational speed isrequired for reliable evaluation of even thesmallest voltages.A reference mark on the pulse ring in theform of a large “tooth space” makes it pos-sible not only to perform rotational-speedmeasurement, but also to determine thepulse ring’s position. Since the toothedpulse ring is an important component of therotational-speed measuring system, exact-ing technical demands are made upon it toensure that reliable, precise information is obtained. Pulse-ring specifications areavailable on request.

Explanation of symbolsUA Output voltagen Rotational speeds Air gap

1 0 261 210 104

2 0 261 210 147

3 0 281 002 214

Accessories

For rot-speed From offer Plug partsensor drawing number0 261 210 104 A 928 000 019 1 928 402 412

A 928 000 012 1 928 402 5790 261 210 147 Enquire at AMP0 261 002 214 A 928 000 453 1 928 402 966

22223_1021En_012-013 12.07.2001 9:56 Uhr Seite 13

14 Rotational-speed sensors A B

Hall-effect rotational-speed sensorsDigital measurement of rotational speeds

Technical Data 1) / Range

Part number 0 232 103 021 0 232 103 022Minimum rotational speed of trigger wheel nmin 0 min–1 10 min–1

Maximum rotational-speed of trigger wheel nmax. 4000 min–1 4500 min–1

Minimum working air gap 0.1 mm 0.1 mmMaximum working air gap 1.8 mm 1.5 mmSupply voltage UN 5 V 12 VSupply-voltage range UV 4.75...5.25 V 2) 4.5...24 VSupply current IV Typical 5.5 mA 10 mAOutput current IA 0...20 mA 0...20 mAOutput voltage UA 0... UV 0... UV

Output saturation voltage US ≤ 0.5 V ≤ 0.5 VSwitching time tf 3) at UA = UN, IA = 20 mA (ohmic load) ≤ 1 µs ≤ 1 µsSwitching time tr 4) at UA = UN, IA = 20 mA (ohmic load) ≤ 15 µs ≤ 15 µsSustained temperature in the sensor and transition region –40...+150 °C –30...+130 °C 5)Sustained temperature in the plug area –40...+130 °C –30...+120 °C 6)1) At ambient temperature 23 ±5 °C. 2) Maximum supply voltage for 1 hour: 16.5 V3) Time from HIGH to LOW, measured between the connections (0) and (–) from 90% to 10%4) Time from LOW to HIGH, measured between the connections (0) and (–) from 10% to 90%5) Short-time –40...+150 °C permissible. 6) Short-time –40...+130 °C permissible.

Accessories for connectorPlug housing Contact pins Individual gaskets For cable cross section1 928 403 110 1 987 280 103 1 987 280 106 0.5...1 mm2

1 987 280 105 1 987 280 107 1.5...2.5 mm2

Note: For a 3-pin plug, 1 plug housing, 3 contact pins, and 3 individual gaskets are required. For automotive applications, original AMP crimping tools must be used.

DesignHall sensors comprise a semiconductorwafer with integrated driver circuits (e.g.Schmitt-Trigger) for signal conditioning, atransistor functioning as the output driver,and a permanent magnet. These are allhermetically sealed inside a plastic plug-type housing.

ApplicationHall-effect rotational-speed sensors areused for the non-contacting (proximity), andtherefore wear-free, measurement of rotatio-nal speeds, angles, and travelled distances.Compared to inductive-type sensors, theyhave an advantage in their output signalbeing independent of the rotational speed orrelative speed of the rotating trigger-wheelvane. The position of the tooth is the deci-sive factor for the output signal.Adaptation to almost every conceivableapplication requirement is possible byappropriate tooth design. In automotiveengineering, Hall-effect sensors are usedfor information on the momentary wheelspeed and wheel position as needed forbraking and drive systems (ABS/TCS), formeasuring the steering-wheel angle asrequired for the vehicle dynamics controlsystem (Electronic Stability Program, ESP),and for cylinder identification.

Operating principleMeasurement is based upon the Hall effectwhich states that when a current is passedthrough a semiconductor wafer the so-called Hall voltage is generated at rightangles to the direction of current. Themagnitude of this voltage is proportional tothe magnetic field through the semiconduc-tor. Protective circuits, signal conditioningcircuits, and output drivers are assembleddirectly on this semiconductor.If a magnetically conductive tooth (e.g. ofsoft iron) is moved in front of the sensor,the magnetic field is influenced arbitrarilyas a function of the trigger-wheel vaneshape. In other words, the output signalsare practically freely selectable.

n, æ, s

U

P Precise and reliable digitalmeasurement of rotationalspeed, angle, and distancetravelled.P Non-contacting (proximity)measurement.P Hall-IC in sensor with open-collector output.P Insensitive to dirt andcontamination.P Resistant to mineral-oil pro-ducts (fuel, engine lubricant).

Installation information– Standard installation conditionsguarantee full sensor functioning.– Route the connecting cables in parallel inorder to prevent incoming interference.– Protect the sensor against destruction bystatic discharge (CMOS components).– The information on the right of this pagemust be observed in the design of thetrigger wheel.

Symbol explanationnmin = 0: Static operation possible.nmin > 0: Only dynamic operation possible.US: Max. output voltage at LOW withIA: Output current = 20 mA.IV: Supply current for the Hall sensor.tf: Fall time (trailing signal edge).tr: Rise time (leading signal edge).

Trigger-wheel design0 232 103 021The trigger wheel must be designed as a2-track wheel. The phase sensor must beinstalled dead center. Permissible centeroffset: ±0.5 mm.Segment shape:Mean diameter ≥ 45 mmSegment width ≥ 5 mmSegment length ≥ 10 mmSegment height ≥ 3.5 mm

0 232 103 022The trigger wheel is scanned radially.Segment shape:Diameter ≥ 30 mmTooth depth ≥ 4.5 mmTooth width ≥ 10 mmMaterial thickness ≥ 3.5 mm

22223_1021En_014-015 12.07.2001 9:57 Uhr Seite 14

B A Rotational-speed sensors 15

7,5

25

21

33

36,8

13

SS

OO

Tz

Sez

Stz

Tz

Sez

Stz

25 ±0,4

R8±0,2

R12±0,2 15

±0,3

24,4

±0,3

11,5 ±0,3

19

19

1221

ø17,98 - 0,24

49±0

,2

24±0

,2

1,5

15,4

ø18,7 ±0,26

47,3

±0,2

20

ø17,98 - 0,24

ø15 +0,5- 0,2

25

±0,5

126,5

2

31

22 ±0,4

±0,2

UAUV UAUV

24°Z1

Dr

hZSL

1,

5s

4,5

ø45

24° ±10´

4,5

H8 (+0,022)10 +0,1845 - 0,1

- 0,0

5

R27

,1

L1

Hall-Sensor

0

GND

I

+

I

L

A

A

V

V

A

OSCIU V

U 0

RV

U V

Dimension drawings.S 3-pin plug-in connection Tz Temperature areaSez Sensor area O O-ringStz Plug area

0 232 103 021 0 232 103 022

Block diagram.

S

Sα

LOW

α

α360°

270°180°

90°

L2 L4L3L1

Z3 Z4Z2Z1

A,Sat

A,Sat

UA,O

HIGH

U

UA,O

U

0°

α

Dr

L3

Z4

L4Z1

L1

Z2

Z3

L4S1

S2

Z1

L1

-0,5

R3

-0,5

R3

±0,1

R32,5

66°

R22,5±0,1

24°24°

66°66°

66°

24°24°

90°

180°

±0,1

R27,5

Z3

L3

Z4

L2

Z2

L2

Output-signal shape.UA, O Output voltageUA, SAT Output saturation voltageα Angle of rotationαS Signal width

0 232 103 021

0 232 103 022

Installation stipulation 0 232 103 021.Dr Direction of rotation

Test wheel

Installation stipulation 0 232 103 022.Dr Direction of rotationLs Air gapS Sharp-edgedZh Tooth height

Test wheel

22223_1021En_014-015 12.07.2001 9:57 Uhr Seite 15

16 Acceleration sensors A B

Acceleration sensorMeasurement of acceleration up to ±5 g

Acceleration a0 +5g-5g

0,5 V

2,5 V

4,5 V

UAR

Out

put v

olta

ge U

A

UAR Open-circuit output voltageUA = U0 ± UD

Output-voltage excursion for measuring range UD = ±2 VOutput voltage UA

For acceleration > +5 g 4.5 VFor acceleration < –5 g 0.5 V


Technical Data / Range

Part number 0 273 101 021Measuring range ±5 gLimit of operating load

Sustained operation in the sensor’s dynamic core-frequency range without damage ±10 g

Overload protectionPeak amplitude: 20 times without damage 100 g

Lateral sensitivity < 10 %Nominal sensitivity at f = 15.8 Hz 2 V / 5 gOperating temperature range –40...+105 °CStorage-temperature range –40...+95 °CService life (ageing)

In operating temperature range –40...+105 °C 4000 h

Weight 75 g

Electrical specifications for Uv = 5 V ±3 %Input current Iv < 20 mAOutput-voltage zero point Uo Uv / 2 = 2.5 V ±100 mVSensitivity 400 mV / g ±12 %Dynamic output resistance RAO in the range 0...100 Hz < 300 Load resistance RL (pullup above +5 V) > 7.5 kΩLoad capacity CL < 15 nFLower critical frequency fu (–3 dB) 0 Hz < fu < 5 HzUpper critical frequency fo (–3 dB) 50 Hz < fo < 100 Hz

ApplicationsIn automotive engineering, this sensor is used to rule out the chance of faulsediagnosis in the engine electronics. It registers the vehicle accelerations whichare the direct result of fluctuations incrankshaft speed. In order to ascertainwhether these crankshaft-speed fluctua-tions result from ignition misfire or a poorroad surface, the latest engine-manage-ment systems also register the ignitionmisfires of the individual cylinders.

Design and functionThe sensor element comprises a “bendingelement” consisting of two anti-parallelpolarized piezoelectric layers. If accelera-tion forces are applied to this bendingelement, mechanical tension is causedwhich in turn results in a charge of electric-ity at the bending-element surfaces. Thischarge is evaluated by a hybrid circuit. The sensor can measure in the horizontaland in the vertical measurement directionswhen mounted appropriately, whereby themeasurement direction is usually vertical tothe clamping surface.An output signal UA > U0 is generated forvertical upwards acceleration of the clamp-ing surface, whereas the correspondingdownward acceleration generates a signalUA < U0. The output voltage UA has acosine relationship to the angle betweenthe sensor measurement direction and thedirection of acceleration. Taking an angle of 15°, this produces a (calculated) signalreduction of 3.4%.

AccessoriesConnector 1 237 000 039

aU

P Ratiometric output signal.P Temperature-compensated.P Low pyroelectric sensitivity.P Hermetically sealed housing.P High-level EMC.P Overvoltage protection.P Short-circuit proof.P Protected against reverse

polarity.

22223_1021En_016-017 12.07.2001 9:55 Uhr Seite 16

B A Acceleration sensors 17

37

2

0,2±6,6

13

36

11

65

53

55

0,2

±

M

3 12

P

Dimension drawings.M Direction of measurement.

a a=0

b a 0

2

1

Sensor principle.a Without effect of accelerationb With effect of acceleration1 Piezo-ceramic bending element “measuring beam”2 Opposed-polarity layers

Block diagram.P Piezo-ceramic element

Pin 2Pin 3 Pin 1

Pin assignment.

Installation instructionsThe sensor must be securely screwed tothe base. We recommend two M6 screwswith collar or washer. Screw tighteningtorque: 2.5 N · m.

Explanation of symbolsUA Output voltageU0 Output-voltage zero point

(ratiometric to UV)UD Dynamic portion of the output signalUV Supply voltageg Acceleration due to gravity

= 9.81 m · s–2

Pin assignmentPin 1 +5 V (UV)Pin 2 GroundPin 3 OUT

22223_1021En_016-017 12.07.2001 9:55 Uhr Seite 17


Piezoelectric acceleration sensorsMeasurement of acceleration up to 35 g


Part number 0 273 101 141 0 273 101 150 0 273 101 131Block diagram X – –

min. typ. max. min. typ. max. min. typ. max.Measuring range

at UV = 5 V g 1) –35 – +35 –35 – +35 –35 – +35Frequency range (–3dB) Hz 0.9 – 250 0.9 – 340 0.9 – 340Supply voltage UV V 4.75 5.00 5.25 4.0 5.0 5.25 4.0 5.0 5.25Supply current IV mA – – 12 – – 15 – – 15Open-circuit voltage

at zero acceleration mV –45 – +45 UV /2 ±60 mV UV /2 ±60 mVCalibrated sensitivity at room

temperature mV · g–1 57.5 60 62.5 57.5 60 62.5 57.5 60 62.5Calibrated sensitivity at

operating temperature % – – 4 – – – – – –Operating-temperature range °C –45 – +95 –45 – +95 –45 – +95

Electrical outputCurrent-carrying capacity mA 0.9 – – – – – – – –Capacitive loadability pF 1200 – – – – – – – –Pin assignment

Pin 1 UV = +5 V Output B Output BPin 2 Output B UV = +5 V UV = +5 VPin 3 UV = +5 V Data DataPin 4 Test input Test input Test inputPin 5 Ground Output A Output APin 6 Output A Housing, ground Housing, groundPin 7 Housing, ground – –

1) Acceleration due to gravity g = 9.81 m · s–2.

RangeDual-channel sensorWith two identical, but independent, piezo-ceramic bending strips. These areconnected so that the output voltages ofeach channel are phase-opposed. Suitable for pcb mounting.

0 273 101 141

With two sensing directions offset to eachother by 90°. Suitable for pcb mounting.

0 273 101 150

With one sensing direction only. In thisdirection, acceleration leads to a 180°phase shift of channel A, whereas thechannel B phase shift is 0°. Suitable for pcb mounting.

0 273 101 131

ApplicationsUsed in automotive occupant-protectionsystems for triggering the airbag, the seat-belt tightener, the roll-over bar, or the seat-belt locking systems. Used for instance asthe impact sensor for monitoring impactloads during transportation. Since thelower frequency limit is 0.9 Hz, this sensorcan only be used to register accelerationchanges.

Design and functionThe heart of this acceleration sensor is apiezo-ceramic strip of polycrystallinesintered material. When electrically polar-ized, this material displays a piezoelectricaleffect: That is, when pressure is applied,the mechanical loading results in chargeseparation, or a voltage which can then bepicked-off by electrodes.The piezo bending element comprises abonded structure containing two inverselypolarized piezo strips, the so-called bi-morphous strips. These have electrodes,and are bonded to a center electrode. Thisconfiguration has the advantage that thepyroelectrical signals caused by tempera-ture fluctuations compensate each other.

aU

P Acceleration measurementusing piezoelectric bendingelements (bimorphousstrips).P Micromechanical accelera-tion sensor (please enquire).P Low temperature-dependence.P High sensitivity.P Wide measuring range.

When subjected to acceleration, the piezo-ceramic bends by as much as 10–7 m.For signal processing, the sensor is pro-vided with a hybrid circuit which is com-prised of an impedance converter, a filter,and an amplifier. These serve to define thesensitivity and effective frequency range.The filter removes the HF signal compo-nents. The lower frequency limit of 0.6 Hz isdefined by the piezo element itself. Using asupplementary test input, the sensor’selectronic functions can be monitored aswell as piezo-strip integrity.

Test signalA fully operational sensor generates apositive output pulse when +5V are brieflyapplied across its test input. If there is anopen-circuit in the signal path, this out-put pulse will be missing, and if thebimorphous strip is broken the signal willexceed +5V. For the versions with two bimorphousstrips, the output pulse must appear ateach output.

22223_1021En_018-019 12.07.2001 9:53 Uhr Seite 18


43,8

2

R4

2

X

± 0

,2

3,5+

0,7

- 0,

5

0,6 -

0,1

4,35+ 0,05- 0,15

4,9± 0,2

4,1±

0,2

0,65

+ 0

,1

9

20,8

5±

0,3

4,4± 0,2

3,81

15,24

2,54

2,8

13,630 X

1 34 5 6 7

Dimension drawings.

0 273 101 141

Installation position.A, B, M Directions of measurement

Baseplate vertical referred to direction Baseplate parallel to direction of measurement. of measurement.0 273 101 141 0 273 101 150 0 273 101 131Deceleration in direction of measurement Acceleration in A direction Acceleration in A directionChannel A output voltage Channel A output voltage Channel A output voltage

UV UV UVUAA < , UAA > . UAA < ,2 2 2

Channel B output voltage Acceleration in B direction Channel B output voltageUV

Channel B output voltage UVUAB > . UVUAB > .

2 UAB > . 22

123456

8±

0,3

0,7+

0,23,

8±

0,4

20+

0,2

+ 0

,1

1± 0

,4

1,4± 0,4

18,8+ 0,2+ 0,1

12345

6

6 6

X

X

M

B

A

A

0 273 101 131/150

++

–

++

–

Block diagram of dual-channel sensor.

Installation instructionsThe acceleration sensors must be installedso that the baseplate is either vertical or horizontal referred to the direction ofacceleration or deceleration.

22223_1021En_018-019 12.07.2001 9:53 Uhr Seite 19


Surface-type micromechanical acceleration sensors Measurement of accelerations of ±35 g or ±50 g

Range

Acceleration 1) Sensing axis Sensor type Order No.

±35 g X SMB 050 0 273 101 138X/Y SMB 060 0 273 101 143X/-X SMB 065 0 273 101 144

±50 g X SMB 052 0 273 101 155X/Y SMB 062 0 273 101 154X/-X SMB 067 0 273 101 157

1) Measuring range for full-load deflection is guaranteed after setting the offset to VDD/2.

ApplicationsThis acceleration sensor is used in vehiclesas one of the components for the front air-bag. Depending upon installation position inthe passenger compartment, it can be usedto measure longitudinal or transverse acce-leration (referred to the vehicle’s direction oftravel).

Design and functionThese acceleration sensors rely on a capa-citive measuring principle. Lateral sensing direction (in the componentlevel).Acceleration causes the seismic mass todeflect in the x-direction. This seismic massis suspended on wave-shaped bendingsprings.One electrode set is connected to the seis-mic mass (comb-like structure) and movesalong with the particular acceleration.These movable electrodes are designed ascapacitor plates and are also provided withimmovable counter-electrodes which areseparated from each other by a narrow airgap. The application of a capacitive differ-ential circuit with two capacitors results ina reduction of the non-linearity of the signalevaluation. Overload stops are provided asa protection against over-acceleration.These prevent direct contact between theelectrodes (combs). Mechanical sensitivityis defined by the geometrical shape of thesprings.Changes in C1 and C2 are registered andchanged to a corresponding voltage by acapacity/voltage converter.

aU

P Complete measuring rangeof ±35 g or ±50 g.P Low number of externalcomponents required.P Integrated self-diagnosis.P Integrated offset calibration.P Integrated 2nd-order Besselfilter.P Ratiometric output signal.P Standard SMD PLCC28housing.P Temperature range suitablefor commercial-vehicle appli-cations.

+a

Y

X

+a-a

-a

VDD

U (X Out)

VDD/2

GND

Sensing direction.

X Axis

C/V converter

Y axis

SC filter

C/V converter

Evaluation ASIC GND

Test

Out Y

Out X

VDD

Off Y

Off X

Sensor element

SC filter

Offsetadjust

OffsetAdjust

Oscillator

Design and function.

22223_1021En_020-021 12.07.2001 9:53 Uhr Seite 20


SMB05x/SMB06x

M

(PLCC28)

4 23 1 28 2627

25

19

20

21

22

23

24

1812 13 14 15 16 17

11

5

6

7

8

9

10

Connector-pin assignment.

M marking pin 1Pin Order No. 1 273 101...

.. 138 .. 143 .. 144

.. 155 .. 154 .. 1571-11 N.C. (*) N.C. (*) N.C. (*)12 Offset X Offset X Offset X13 Out X Out X Out X14 Test Test Test15 GND GND GND16 VDD VDD VDD17 N.C. Offset Y Offset X18 N.C. Out Y Out X19-28 N.C. N.C. N.C.* Pin has no bond connection

C1 C2 CM

2 31

4 5 6 7

a

8 9

C1 C2CM

Operating principle.1 Horizontal sprung seismic mass with springs,2 Spring, 3 Fixed electrodes with capacitanceC1, 4 Al conductor, 5 Bond pad, 6 Fixed electrodes with capacity C2, 7 Siliconoxide, 8 Torsion spring, 9 Vertical sprungseismic mass with electrodes. A Acceleration in sensing direction, CM measuring capacity.

C1 – C2a ~

C1 + C2

Technical Data

Limit valuesParameter min. normal max.Supply voltage UV V –0.3 6Storage temperature °C –55 +105Mechanical impact 1)

Not energized g 2000Energized g 1000

ESD (each pin) kV 1.5Temperature gradient K/min 20

Operating conditionsParameter min. normal max.Supply voltage UV V 4.75 5 5.25Supply current IV

Single-channel unit mA 6 7Two-channel unit mA 10 14

Operating temperature °C –40 +85

Measuring and function characteristicsParameter min. normal max.Sensitivity mV/g 55

mV/g 38.5Sensitivity tolerance 2) % 5 9Non-linearity of the sensitivity % 0.8 2Transverse-axis sensitivity 3) % 5Zero-acceleration output VDD/2Offset at zero acceleration

After offset adjustment mV ±150Without offset adjustment V ±Vdd/4

Offset-adjustment time s 1.65Offset/Test-voltage input (X/Y)

Low V 0.25 x VDD High V 0.75 x VDD

Self-test±35g g type at 5 V mV 250 385 866±50g g type at 5 V mV 200 336 610

Output-voltage range UAIOut = ±50 µA V 0.25 VDD –0.25Output current IA µA ±50Capacitive output load pF 10003 dB corner frequency2nd order Bessel filter Hz 320 400 480Output noise 4)10 to 1000 Hz mg/ÎãHz 2.5 4.51) The effects of excessive shock can permanently damage the unit.

Maloperation of the sensor due to mechanical impact, and excessive g figures, aredetected by on-chip self-test.

2) In percentage of nominal sensitivity, as a function of service life and temperature range.3) Output signal resulting from acceleration in any axis vertical to the sensing axis.4) Output noise with the offset adjustment out of operation. With offset adjustment in

operation, the output noise is approx. double the figure.

Explanation of symbolsa Acceleration (gn = 9.81 m/s2)Vout Output voltageVDD Supply voltageVoff Offset voltageS Sensitivity

VDD VDDVout = + (Voff + S · a) ·

2 5V

Installation informationA deviation in the installation by ±1° fromthe horizontal results in a measuring errorof 0.02 g. The sensor is protected againstpolarity reversal.

22223_1021En_020-021 12.07.2001 9:53 Uhr Seite 21


Piezoelectric vibration sensorsMeasurement of structure-borne noise/acceleration

Technical data

Frequency range 1...20 kHzMeasuring range ≈ 0.1...400 g 1)Sensitivity at 5 kHz 26 ±8 mV/gLinearity between 5...15 kHz

at resonances +20/–10 % of 5 kHz-value (15...41 mV/g)Dominant resonant frequency > 25 kHzSelf-impedance > 1 MΩCapacitance range 800...1400 pFTemperature dependence

of the sensitivity ≤ 0.06 mV/(g · °C)Operating-temperature range:

Type 0 261 231 118 –40...+150 °CType 0 261 231 148 –40...+150 °CType 0 261 231 153 –40...+130 °C

Permissible oscillations Sustained ≤ 80 gShort-term ≤ 400 g

InstallationFastening screw Grey cast iron M 8 x 25; quality 8.8

Aluminum M 8 x 30; quality 8.8Tightening torque (oiled permitted) 20 ±5 N · mMounting position Arbitrary1) Acceleration due to gravity g = 9.81 m · s–2.Resistant to saline fog and industrial climate.

ApplicationsVibration sensors of this type are suitable forthe detection of structure-borne acousticoscillations as can occur for example in caseof irregular combustion in engines and onmachines. Thanks to their ruggedness,these vibration sensors can be used evenunder the most severe operating conditions.

Areas of application– Knock control for internal-combustion

engines– Protection of machine tools– Detection of cavitation– Monitoring of bearings– Theft-deterrent systems

Design and functionOn account of its inertia, a mass exertscompressive forces on a ring-shapedpiezo-ceramic element in time with theoscillation which generates the excitation.Within the ceramic element, these forcesresult in charge transfer within the ceramicand a voltage is generated between the top and bottom of the ceramic element.This voltage is picked-off using contactdiscs – in many cases it is filtered and inte-grated – and made available as a measur-ing signal. In order to route the vibrationdirectly into the sensor, vibration sensorsare securely bolted to the object on whichmeasurements take place.

Measurement sensitivityEvery vibration sensor has its own individualresponse characteristic which is closelylinked to its measurement sensitivity. Themeasurement sensitivity is defined as theoutput voltage per unit of acceleration dueto gravity (see characteristic curve). Theproduction-related sensitivity scatter isacceptable for applications where the pri-mary task is to record that vibration isoccurring, and not so much to measure itsseverity. The low voltages generated by the sensorcan be evaluated using a high-impedanceAC amplifier.

aU

P Reliable detection ofstructure-borne noise forprotecting machines andengines.P Piezo-ceramic with highdegree of measurementsensitivity.P Sturdy compact design.

Range

Vibration sensor2-pole without cable 0 261 231 1482-pole, with cable, length 480 mm, up to +130 °C 0 261 231 1533-pole, with cable, length 410 mm, up to +150 °C 0 261 231 118

Accessories

Sensor Plug housing Contact pins Individual gasket For cablecross section

0 261 231 148 1 928 403 137 1 987 280 103 1 987 280 106 0.5...1.0 mm2

1 987 280 105 1 987 280 107 1.5...2.5 mm2

0 261 231 153 1 928 403 826 1 928 498 060 1 928 300 599 0.5...1.0 mm2

1 928 498 061 1 928 300 600 1.5...2.5 mm2

0 261 231 118 1 928 403 110 1 987 280 103 1 987 280 106 0.5...1.0 mm2

1 987 280 105 1 987 280 107 1.5...2.5 mm2

Note: A 3-pole plug requires 1 plug housing, 3 contact pins, and 3 individual gaskets. In automotive applications, original AMP crimping tools must be used.

22223_1021En_022-023 12.07.2001 9:54 Uhr Seite 22

EvaluationThe sensor’s signals can be evaluatedusing an electronic module. This is described on Pages 26/27.

Installation instructionsThe sensor’s metal surfaces must makedirect contact. No washers of any type areto be used when fastening the sensors.The mounting-hole contact surface shouldbe of high quality to ensure low-resonancesensor coupling at the measuring point.The sensor cable is to be laid such thatthere is no possibility of sympatheticoscillations being generated. The sensormust not come into contact with liquids forlonger periods.

Explanation of symbolsE Sensitivityf Frequencyg Acceleration due to gravity

Connector-pin assignmentsPin 1, 2 Measuring signalPin 3 Shield, dummy


V

7FF

1 2 3 4 5 6

Vibration sensor (design).1 Seismic mass with compressive forces F,2 Housing, 3 Piezo-ceramic,4 Screw, 5 Contact, 6 Electrical connection, 7 Machine block, V Vibration.

a

ø5

±0,2

±0,2

ø4,

55

52,2 ±2

27

8,4

±0,15

+0,3-0,111,65

18

ø13

ø22

20°

24±1

,5

27

8,4

13

±0,2

1828

8,4

13

ø20

41,1 ±1

32,1 ±1

L

L

18

±0,2

0,4

±132

ø20

+0,3-0,111,65

Pin 1

Pin 1

Pin 2

Pin 3

Pin 2

±0,2

a

a

Frequency f5 10 15 kHz

0

10

20

30

mV g-1.

Sen

sitiv

ity E

Response characteristic as a function of frequency.

0,05

0,05

M8

22

RZ16

A

A

Mounting hole.

Dimension drawings.a Contact surface.

0 261 231 148

0 261 231 118

0 261 231 153

Part Lnumber mm

.. 118 410 ±10

.. 153 430 ±10

22223_1021En_022-023 12.07.2001 9:54 Uhr Seite 23

24 Vibration sensors A B

Piezoelectric vibration sensorsSignal-evaluation module


Part number 0 272 230 424Condition min. max.

Supply voltage UV V – 4.75 5.25Supply current IV mA UV/2 – 30Input voltage,

Analog UKE V – 0 2Input current,

Analog IKE µA UKE = 2 V – 10Signal amplification V – 2 128Signal amplification,

Tolerance dV % – –3 +3Clock frequency fx MHz – 0,5 27Input-signal frequency fKE kHz – – 30Bandpass-filter mid-frequency fM kHz – 5 16Filter quality Q – 3 –Filter quality, tolerance dQ – –0.5 +0.3Integrator voltage excursion,

effective dVKU V – 3.8 +4.5Integrator offset tMF = 10 ms

mV > 0 °C –300 +300mV ≤ 0 °C –400 +400

Integrator time constant tI µs – 148 152Integrator output impedance ZKL kΩ – – 2Operating temperature ϑ °C – –40 +125

Limit valuesmin. typ. max.

Max. supply voltage V – –0.5 – 6.7Max. rate of rise of

the supply voltage µs – – 1 –Max. current in all inputs

and outputs mA – –2.5 – +2.5Protection of the inputs and

outputs against destructiondue to electrostatic charge kV – –2 – 2

Storage temperature °C – –55 – +135Ambient temperature

during operation °C – –40 – +125

ApplicationsEvaluation of the analog signals from piezo-electric sensors (vibration sensors).

Design and functionThe analog signals are evaluated by acircuit integrated in the module. The circuitcontains a programmable amplifier, a band-pass filter, a rectifier, an integrator, andcontrol logic circuitry. The use of “SC”circuit engineering ensures that operationremains insensitive to interference, and thatthere is no necessity for external calibra-tion. It is an easy matter to use this fullyprogrammable circuit for a variety ofapplications. The start and end of the integration arecontrolled through the “measuring window”input. For a variety of different pulse fre-quencies applied from outside (8 steps of1...16 MHz), a frequency divider which isprogrammed through 3 inputs, generatesthe system clock for the analog stage, andthe test frequencies (9 mid-frequenciesfrom 5...16 kHz) depending upon thesetting of the filter. The internal pulsefrequency can be changed from nominal100 kHz to values between 50 kHz and150 kHz by changing the quartz frequency.At the same time, a shift of the band-filtermid-frequencies, the test frequencies, andthe integration time constants also takesplace.

NoteDue to its having MOS inputs, this moduleis to be handled very carefully. It is not to be touched directly and a MOS work-station is to be used. Operating-voltageswitch-on is only to take place with avoltage gradient < 1 V · µs–1.

P Choice of 4 selectablesensor inputs or 2 symmetricalinputs.P Programmable amplification.P Programmable bandpassfilter.P External calibrationunnecessary.P Integral programmablefrequency divider.P Analog stage with signaltest.P Suitable for a wide variety ofmicrocomputers.P PLCC28 housing.

aU

22223_1021En_024-025 12.07.2001 9:58 Uhr Seite 24

B A Vibration sensors 25

M

0,5 ± 0,0510,7 ± 0,35

1,14 ± 0,02

1,14

± 0,

02 0,5

min

.

3,81

± 0,

05

1,86

± 0,

06

11,4 ± 0,2

12,56 ± 0,2

1,27 ± 0,06

KTI/ADTTP0

KSA1KSA2

4 3 2 1 28 27 26

12 13 14 15 16 17 18

5

6

7

8

9

10

11

25

24

23

22

21

20

19

TP1TP2

KIMF

BF1

BF0

BF3

BF2

G0

G2

G1

T1

T0

T2

U

X1

n.c.

V

KE2 KE4KE1 KE3 KSA3

U

V

SS

REF

CC195

Dimension drawings.M Marking for pin 1

Connector-pin assignment.UREF Reference voltageUV/2 (Output loadable with ±0.5 mA)UV Supply voltage 5 VVSS GroundBF0/BF1/BF2/BF3*) Setting of the bandpassmid-frequencyG0/G1/G2*) Setting of the amplification factorKE1/2/3/4 Sensor inputsKI Signal-integral outputKSA1/2/3*) Sensor selectionKTI/ADT Controlled input/test outputMF*) Measuring windowN.C. Not connectedT0/T1/T2 Clock-frequency selectionTP0/TP1/TP2 For test purposesX1 Clock input

*) TTL-compatible inputs from the microcomputer port driver

.

R O F

T

4

P V L G I

OUT1.S

N1

M1

Σ

Design and function.F Frequency divider, G Rectifier, L Filter, I Integrator, O Oscillator, P Multiplexer, R Reference signals, S Sensor inputs, T Test-pulse divider, V Amplifier, OUT Output.

5V

4,7nF2

4 3 3

30 0 BF0-3 KSA G0-2 F

KE1

KE2

KE3

KE4

X1

T0-2

UV

SS0

10nF1

P

S

T

K

1-3

REFU

V

M

C

C R

R

CClock input

Application circuit (Example).K Signal-integral output, P From microcomputer port driver, S Sensors, T Quartz clock, C1/C2 Capacitors as near as possible to housing pins.

22223_1021En_024-025 12.07.2001 9:58 Uhr Seite 25

26 Pressure sensors A B

Micromechanical differential-pressure sensorsHybrid designMeasurement of pressure in gases from –100 kPa to 5 kPa

ApplicationsOn internal-combustion engines, thissensor is used to measure the differentialpressure between the intake-manifold pres-sure of the drawn-in air and a referencepressure which is inputted through a hose.

Design and functionThe piezoresistive pressure-sensor elementand suitable electronic circuitry for signalamplification and temperature compensa-tion are mounted on a silicon chip. Themeasured pressure is applied to the rearside of the silicon diaphragm. The refe-rence pressure is applied from above tothe diaphragm’s active surface. Thanks to aspecial coating, both sides of the dia-phragm are insensitive to the gases andliquids which are present in the intakemanifold.

Installation informationThe sensor is designed for mounting on ahorizontal surface of the vehicle’s intakemanifold. The pressure fitting extends intothe manifold and is sealed-off to atmos-phere by an O-ring. Care must be taken,by ensuring appropriate mounting, thatcondensate does not form in the pressurecell or in the reference opening. Generallyspeaking, installation is to be such thatliquids cannot accumulate in either thesensor or the pressure hose. Water in thesensor leads to malfunctions when itfreezes.

P High accuracy.P EMC protection better than100 Vm–1.P Temperature-compensated.

Range

Pressure range kPa (p1...p2) Order No.–80...5 B 261 260 314 1)–100...0 B 261 260 318 1)1) Provisional draft number, order number available upon enquiry. Deliverable as fromabout the end of 2001.

Technical data

min. typ. max.Pressure-measuring range pe kPa –100 – 0Operating temperature ϑB °C –40 – +130Supply voltage UV V 4.5 5.0 5.5Current consumption at UV = 5 V IV mA 6.0 9.0 12.5Load current at output IL mA –1.0 – 0.1Load resistance to UV or ground Rpull-up kΩ 5 680 –

Rpull-down kΩ 50.0 100 –Response time t10/90 ms – 1.0 –Voltage limitation at UV = 5 V

Lower limit UA min V 0.25 0.3 0.35Upper limit UA max V 4.75 4.8 4.85

Limit dataSupply voltage UV max V – – +16Pressure pe kPa –500 – +500Storage temperature ϑL °C –40 – +130

Accessories

Plug housing Qty. required: 1 1 928 403 966Contact pins Qty. required: 3 1 928 498 060Individual gaskets Qty. required: 3 1 928 300 599

pU

22223_1021En_026-027 12.07.2001 9:58 Uhr Seite 26

B A Pressure sensors 27

Pressure p

kPap2

p1

AO

utpu

t vol

tage

Uin

V

0

5

4.5

0.5


Absolute pressure p

2p1 p

0

1.5

-1.5

Tole

ranc

e

Characteristic-curve tolerance.

C13085100-50

2

1

2.5

1.5

0.5

Temperature

Fact

or

-40

Tolerance-extension factor.

3 1

2

Section drawing (overall system).1 Sensor cell, 2 Measured pressure, 3 Reference pressure

1 2 3

A

1223

1315

19

5

12

75

A

Dimension drawings.Pin assignmentPin 1 +5 VPin 2 GroundPin 3 Output signal

ADCSHU 5.5 to 16 V

VCC

GND

OUT

10 nF

10 nF 100 nF

k22

680 k

U 5 V

PU

D

R

Signal evaluation: RecommendationThe pressure sensor’s electrical output isso designed that malfunctions caused bycable open-circuits or short circuits can be detected by a suitable circuit in the following electronic circuitry. The diagnosisareas situated outside the characteristic-curve limits are provided for fault diagnosis.The circuit diagram shows an example fordetection of all malfunctions via signal out-side the characteristic-curve limitation.

Signal evaluation: Recommendation.D Pressure signal, R Reference

Pressure sensor ECU

22223_1021En_026-027 12.07.2001 9:58 Uhr Seite 27


Differential-pressure sensorsMeasurement of pressures in gases and liquid mediums from –2.5 kPa to +3.75 kPa

ApplicationIn automotive applications, this type ofpressure sensor is used for measuring fuel-tank pressure. In the process, a differentialpressure is established referred to theambient pressure.

Design and functionA micromechanical pressure element withdiaphragm and connector fitting is the mostimportant component in this differential-pressure sensor.The diaphragm is resistant to the effects ofthe monitored medium. The measurementis carried out by routing the monitoredmedium through the pressure connectorand applying the prevailing pressure to thepiezoresistive sensor element. This sensorelement is integrated on a silicon chiptogether with electronic circuitry for signalamplification and temperature compen-sation. The silicon chip is surrounded by aTO-type housing which forms the innersensor cell. The surrounding pressure isapplied to the active surface through anopening in the cap and a reference fitting.The active surface is protected againstmoisture by Silicagel. The pressure sensorgenerates an analog signal which is ratio-metric referred to the supply voltage.

Installation instructionsThe sensor is designed for horizontalmounting on a horizontal surface. In case of non-horizontal mounting, eachcase must be considered individually.Generally speaking, installation is to besuch that liquids cannot accumulate in thesensor or in the pressure hose. Water inthe sensor leads to malfunctions when itfreezes.

P Resistant to the monitoredmedium.P Piezoresistive sensorelement.P Integrated protection againsthumidity.

pU

Range

Pressure range Characteristics Dimension Part No.kPa (p1...p2) drawing–2.50...2.50 – 1 0 261 230 015–2.50...2.50 with protective cover 2 0 261 230 026–3.75...1.25 – 1 B 261 260 317 1)

Technical data

min typ maxPressure-measuring range pe kPa –2.5 – +2.5Operating temperature ϑB °C –40 – +80Supply voltage UV UV V 4.75 5.0 5.25Input current at UV = 5 V IV mA – 9.0 12.5Load current at output IL mA –0.1 – +0.1Load resistance to ground or UV RL kΩ 50 – –Response time t10/90 ms – 0.2 –Voltage limitation at UV = 5 V


Recommendation for signal evaluationLoad resistance to UH = 5.5...16V RL.H kΩ – 680 –

Limit dataSupply voltage (1 min) UVmax V – – 16Pressure measurement Pe, max KPa –30 – +30Storage temperature ϑL °C –40 – +80

Accessories

Plug housing Qty. required: 1 AMP-Nummer 1 928 403 110Contact pins Qty. required: 3 3) AMP-Nummer 929 939-3 2)Contact pins Qty. required: 3 4) AMP-Nummer 2-929 939-1 2)Individual gaskets Qty. required: 3 AMP-Nummer 828 904 2)1) Provisional draft number, Order No. available upon request. Available as from the end

of 2001.2) To be obtained from AMP Deutschland GmbH, Amperestr. 7–11, D-63225 Langen,

Tel. 06103/709-0, Fax 06103/7091223, E-Mail: [email protected]) Contacts for 0 261 230 0264) Contacts for 0 261 230 015, B 261 260 317

22223_1021En_028-029 12.07.2001 9:59 Uhr Seite 28


X

7,35

± 0,

1

3 2 1

ø 6

± 0,

121

,5

3±

0,2

ø 5

,1±

0,1

23,6

12±

0,5

18,5

± 0,

25

ø 11,8 - 0,2

ø 11,85

S

± 0,1

20,5

8

12,3 10

56 56

2727

X

Dimension drawings.S 3-pole plug

2

02612300261

0261230015B261260317

4.5

5

0.5

0p1 p2

Out

put v

olta

ge U

A in

V

Differential pressure pe

0

-8

8

Tole

ranc

e [%

FS

]

Differential pressure pe

p1 p2

1.5

2.0

2.5

1.0

D

N

0.5

0-40-50 0 80 °C

3.0

Fact

or

k

Temperature

0 10 20 mm

3

2

1

Sectional drawing of pressure sensor (overall system).1 Sensor cell, 2 Applied pressure,3 Reference pressure.

1

3

4

5

2

Sectional drawing of sensor cell.1 Silicagel, 2 Applied pressure, 3 Referencepressure, 4 Sensor chip, 5 Glass base.

Characteristic-curve. Characteristic-curve tolerance. Temperature-error multiplier.D After endurance testN In as-new state

Explanation of symbolspe Differential pressureUA Output voltage (signal voltage)UV Supply voltagek Tolerance multiplierD Following endurance testN As-new state

Connector-pin assignmentPin 1 +5 V (UV)Pin 2 GroundPin 3 Output signal

22223_1021En_028-029 12.07.2001 9:59 Uhr Seite 29


Absolute-pressure sensor for measuring atmospheric pressureMeasurement of temperatures from 60 kPa to 115 kPa

Design and functionThis sensor comprises a temperature-compensated measuring element for deter-mining the barometric absolute pressure. In this monolithic integrated silicon pres-sure sensor, the sensor element, and therespective evaluation circuitry with calibra-tion elements are all united on a singlesilicon chip. The silicon chip is glued onto a hybrid substrate to facilitate automaticSMD assembly.

Explanation of symbolsUV Supply voltageUA Output voltage (signal voltage)k Temperature-error multiplierϑ Temperaturepabs Absolute pressureD Following endurance testN Nominal status

60 80 100 115 kPaAbsolute pressure pabs

4.5

4

3.5

3

2.5

2

D

N1

0

0.5

UAV

-40 0 40 80 125 °C

k

1

2

1.5

4

3

2

1

∆pabs

kPa

+–

+–

+–

+–

UA

∆pabs

Temperature

Characteristic curves.

VS

E, K, O

Block diagram.E sensitivity, O Offset, K Compensation circuit, S Sensor bridge, V Amplifier.

P SMD assembly.P Low-profile micromechanics.P Temperature-compensation.P Integral signal amplification.

pU

22223_1021En_030-031 12.07.2001 10:00 Uhr Seite 30


Pin

1

Pin

2

Pin

3

1,33

0,75

-0,1

7,4

1,65

M M

M

9,43,5

4,15

0,4

0,69

1

10,0

6±0

,2

5,6 3,55

12,7 ±0,2

1 1 1

±0,2

6,35 ±0,2

8,35 ±0,2

4,35

3,6

3,6

3 13

3,2

3,2

Dimension drawings.M Pin marking

Connector-pin assignmentFor operation, only the following pins areneeded:Pin 1 OUT output signalPin 2 GND (ground)Pin 3 UV supply voltage


Part number 0 273 300 030min. typ. max.

Pressure-measuring range pabs kPa 60 – 115Operating temperature range ϑB °C –40 – +125Supply voltage UV V 4.75 5.0 5.25Supply current at UV = 5 V IV mA 6.0 9.0 12.5Load current at output IL mA –1.0 – 0.5Signal voltage UA V 2.37 – 4.54Voltage limitation at UV = 5 V


Response time t10/90 ms – – 1Load capacity CL nF – – 12

Signal evaluation: RecommendationLoad resistance to UV or ground Rpull-up kΩ 5 680

Rpull-down kΩ 10.0 100

Limit dataSupply voltage, 1 min UV max V – – 16Pressure pmax kPa – – 160Storage temperature ϑL °C –40 – 130

22223_1021En_030-031 12.07.2001 10:00 Uhr Seite 31


Piezoresistive absolute-pressure sensorsin thick-film technologyMeasurement of pressures in gases up to 250 kPa

Design and functionThe heart of this sensor is the “sensorbubble” (pressure-measuring element) pro-duced using 100% thick-film techniques. It is hermetically sealed on a ceramic sub-strate and contains a given volume of air ata reference pressure of approx. 20 kPa.Piezo-resistive thick-film strain gauges areprinted onto the bubble and protected withglass against aggressive media. The straingauges are characterized by high measure-ment sensitivity (gauge factor approx. 12),as well as by linear and hysteresis-freebehavior. When pressure is applied, theyconvert mechanical strain into an electricsignal. A full-wave bridge circuit provides ameasurement signal which is proportionalto the applied pressure, and this is ampli-fied by a hybrid circuit on the same sub-strate. It is therefore impossible for inter-ference to have any effect through theleads to the ECU. DC amplification andindividual temperature compensation in the –40 °C...+125°C range, produce ananalog, ratiometric (i.e. proportional to thesupply voltage UV) output voltage UA. Thepressure sensors are resistant to gaugepressures up to 600 kPa. Outside the temperature range10°C...85 °C the permissible toleranceincreases by the tolerance multiplier. Toprotect the sensors, the stipulated maxi-mum values for supply voltage, operating-temperature, and maximum pressure arenot to be exceeded.

Explanation of symbolsUV Supply voltageUA Output voltage∆p Permissible accuracy in the range

10°C...85 °Ck Tolerance multiplierϑ Temperaturepabs Absolute pressure

P Thick-film pressure-measuring element ensures ahigh degree of measurementsensitivity.P Thick-film sensor elementand IC on the same substrateguarantee problem-free signaltransmission.P Integrated evaluation circuitfor signal amplification, temper-ature compensation, andcharacteristic-curve adjustmentP Sensor enclosed by robusthousing.

pU

0 20 40 100

-40 0 40 80 120 °C0

1

2

3

0

1

2

3

4

5

UA

∆p

Absolute pressure pabs

0

0.5

1.0

1.5

2.0+_

+_

+_

+_

∆pkPa

UAV

kPa60 80

Temperature

k

Characteristic curves 1 (UV = 5 V).

pabsUA = UV ·(0,01 –0,12)kPa

°C

0 100 200

-40 0 40 80 1200

1

2

3

0

1

2

3

4

5

UA

∆p


0

0.5

1.0

1.5

2.0+_

+_

+_

+_

∆pkPa

UAV

k

kPa

Temperature

Characteristic curves 2 (UV = 5 V).

0,85 pabsUA = UV ·( · +0,0061)230 kPa

Technical data/Range

Part number 0 261 230 004 0 281 002 119Characteristic curve 1 2Measuring range kPa 20…105 20…250Max. pressure (1 s, 30 °C) kPa 600 500Pressure-change time ms ≤ 10 ≤ 10 Supply voltage UV V 4.75…5.25 4.75…5.25Max. supply voltage V 16 16Input current IV mA < 10 <10Load impedance RL kΩ >50 >50Operating temperature range °C –40…+125 –40…+120Degree of protection IP 54 A –

Accessories

Connector 1237000039

22223_1021En_032-033 12.07.2001 10:02 Uhr Seite 32


A

B

UV

C

UA

Block diagram.A Strain-gauge pressure-measuring cell, B Amplifier, C Temperature-compensation circuit

16

10.5 1 13.6 23

.3

0.5±

0.2

38.9

8

6.9

6.5

5.5

Groove 1.2 deep

Pin 3 Pin 2 Pin 1

Blind hole 4 deep

Dimension drawings.

1 2 3 4 5

6 7

Design.1 Strain-gauge pressure-measuring cell, 2 Plastic housing, 3 Thick-film hybrid (sensor and evaluation circuit), 4 Operationalamplifier, 5 Housing cover, 6 Thick-film sensorelement (sensor bubble), 7 Aluminum baseplate.

Installation instructionsA hose forms the connection between the sensor and the gas pressure to bemeasured. Upon installation, the sensorpressure connection should point down-wards to prevent the ingress of moisture. The angular position referred to the verticalmust be +20°...–85°, preferably 0°.Suggested fastening:M6 screw with spring washer.

Connector-pin assignmentTerminal 1 +UV

Terminal 2 GroundTerminal 3 UA

Point attachment.The housing must not make contactoutside this contact area.Torsion resistance must be provided.

22223_1021En_032-033 12.07.2001 10:02 Uhr Seite 33


Absolute-pressure sensorsin micromechanical hybrid designMeasurement of pressures in gases up to 400 kPa

ApplicationsThis sensor is used to measure theabsolute intake-manifold pressure. On theversion with integral temperature sensor,the temperature of the drawn-in air flow isalso measured.

Design and functionThe piezoresistive pressure-sensor elementand suitable electronic circuitry for signal-amplification and temperature compensa-tion are mounted on a silicon chip. Themeasured pressure is applied from aboveto the diaphragm’s active surface. Areference vacuum is enclosed between therear side and the glass base. Thanks to aspecial coating, both pressure sensor andtemperature sensor are insensitive to thegases and liquids which are present in theintake manifold.

Installation informationThe sensor is designed for mounting on ahorizontal surface of the vehicle’s intakemanifold. The pressure fitting together withthe temperature sensor extend into themanifold and are sealed-off to atmosphereby O-rings. By correct mounting in thevehicle (pressure-monitoring point on thetop at the intake manifold, pressure fittingpointing downwards etc.) it is to be en-sured that condensate does not collect inthe pressure cell.

P High accuracy.P EMC protection better than100 V m–1.P Temperature-compensated.P Version with additionalintegral temperature sensor.

Range

Pressure Character- Features Dimension Order No.range istic drawing 2)kPa (p1...p2) curve1)10...115 1 1 B 261 260 136 3)10...115 1 2 0 261 230 05220...250 1 1 0 281 002 48710...115 1 Integral temperature sensor 3 0 261 230 03020...250 1 Integral temperature sensor 3 0 261 230 04220...300 1 Integral temperature sensor 3 0 281 002 43750...350 2 Integral temperature sensor 3 0 281 002 45650...400 2 Integral temperature sensor 3 B 261 260 508 3)1) The characteristic-curve tolerance and the tolerance expansion factor apply for all

versions, see Page 362) See Page 373) Provisional draft number, order number available upon enquiry. Available as from about

the end of 2001

Accessories

Plug housing Qty. required: 1 4) 1 928 403 966Plug housing Qty. required: 1 5) 1 928 403 736Contact pin Qty. required: 3 or 4 6) 1 928 498 060Individual gasket Qty. required: 3 or 4 6) 1 928 300 5994) Plug housing for sensors without integral temperature sensor5) Plug housing for sensors with integral temperature sensor6) Sensors without temperature sensor each need 3 contacts and gaskets. Sensors with

integral temperature sensor each need 4 contacts and gaskets

pU

22223_1021En_034-037 12.07.2001 10:17 Uhr Seite 34


Technical data

min. typ. max.Operating temperature ϑB °C –40 – +130Supply voltage UV V 4.5 5.0 5.5Current consumption at UV = 5 V IV mA 6.0 9.0 12.5Load current at output IL mA –1.0 – 0.5Load resistance to UV or ground Rpull-up kΩ 5 680 –

Rpull-down kΩ 10.0 100 –Response time t10/90 ms – 1.0 –Voltage limitation at UV = 5 V


Limit dataSupply voltage UV max V – – +16Storage temperature ϑL °C –40 – +130

Temperature sensorMeasuring range ϑM °C –40 – +130Measured current IM mA – – 11)Nominal resistance at +20 °C kΩ – 2.5±5% –Thermal time constant t63 s – – 10 2)1) Operation at 5 V with 1 kΩ series resistor2) In air with a flow rate of 6 m · s–1

2

1

6

5

4

3

1 32

4

5

6

7

Sectional view.Section through the sensor cell Section through the DS-S2 pressure sensor

Section through the sensor cell.1 Protective gel, 2 Pressure, 3 Sensorchip, 4 Bonded connection, 5 Ceramicsubstrate, 6 Glass base.

Section through the pressure sensor.1 Bonded connection, 2 Cover, 3 Sensorchip, 4 Ceramic substrate, 5 Housing withpressure-sensor fitting, 6 Gasket, 7 NTCelement.

T

33 nF

2,61

1,5 nF

NTC

ADCSHU 5,5 bis 16 V

VCC

GND

OUTD

R

1,5 nF

1,5 nF 33 nF

k68

680 k

U 5 V

PU

NTCk

38,3 k

k10

Signal evaluation: Recommendation.R ReferenceD Pressure signalT Temperature signal

Signal evaluation: Recommendation.The pressure sensor’s electrical output isso designed that malfunctions caused bycable open-circuits or short circuits can bedetected by a suitable circuit in thefollowing electronic circuitry. The diagnosisareas situated outside the characteristic-curve limits are provided for fault diagnosis.The circuit diagram shows an example fordetection of all malfunctions via signaloutside the characteristic-curve limitation.

Pressure sensor ECU

22223_1021En_034-037 12.07.2001 10:17 Uhr Seite 35


Absolute-pressure sensors in micromechanical hybrid design (contd.)Measurement of pressures in gases up to 400 kPa

0,50

4,50

Out

put v

olta

ge U

A

V

0

1

2

3

4

5

pkPaP

Pressure2P1

V

0

Out

put v

olta

ge U

A

1

2

3

4

54,65

0,40

kPaP2P1pPressure

Characteristic curve 1 (UV = 5.0 V).

Characteristic curve (UV = 5.0 V).

1.5

0

- 1.5

p p1 2

Absolute pressure p

Tole

ranc

e (%

FS

)

0

1

0.5

1.5

130 °C11010-40

Fact

or

Temperature


Tolerance-expansion factor.

R = f ( )

Temperature

102

103

104

105

Ω

40 0 40 80 120 °C

Res

ista

nce

R

Temperature-sensor characteristic curve.

Explanation of symbols.UA Output voltageUV Supply voltagek Tolerance multiplierD After continuous operationN As-new state

22223_1021En_034-037 12.07.2001 10:17 Uhr Seite 36


CBA

C

B

234 1123 123

4822

15

60

72

23

12

20

1333

12

19 1513

38

56

12

A

Dimensions drawings.

1Connector-pin assignmentPin 1 +5 VPin 2 GroundPin 3 Output signal

2Connector-pin assignmentPin 1 +5 VPin 2 GroundPin 3 Output signal

3Connector-pin assignmentPin 1 GroundPin 2 NTC resistorPin 3 +5 VPin 4 Output signal

22223_1021En_034-037 12.07.2001 10:17 Uhr Seite 37


Piezoresistive absolute-pressure sensorwith moulded cableMeasurement of pressures in gases up to 400 kPa

ApplicationsThis type of absolute-pressure sensor ishighly suitable for measuring the boostpressure in the intake manifold of turbo-charged diesel engines. They are neededin such engine assemblies for boost-pressure control and smoke limitation.

Design and functionThe sensors are provided with a pressure-connection fitting with O-ring so that theycan be fitted directly at the measurementpoint without the complication and costs ofinstalling special hoses. They are extremelyrobust and insensitive to aggressive mediasuch as oils, fuels, brake fluids, saline fog,and industrial climate.In the measuring process, pressure isapplied to a silicon diaphragm to which areattached piezoresistive resistors. Usingtheir integrated electronic circuitry, thesensors provide an output signal thevoltage of which is proportional to theapplied pressure.

Installation informationThe metal bushings at the fastening holesare designed for tightening torques ofmaximum 10 N ·m.When installed, the pressure fitting mustpoint downwards. The pressure fitting’sangle referred to the vertical must notexceed 60°.

TolerancesIn the basic temperature range, the maxi-mum pressure-measuring error ∆p (refer-red to the excursion: 400 kPa–50 kPa =350 kPa) is as follows:Pressure range 70...360 kPa

As-new state ±1.0 %After endurance test ±1.2 %

Pressure range < 70 and > 360 kPa (linearincrease)

As-new state ±1.8 %After endurance test ±2.0 %

Throughout the complete temperaturerange, the permissible temperature errorresults from multiplying the maximumpermissible pressure measuring error bythe temperature-error multiplier corre-sponding to the temperature in question.Basic temperature +20...+110 °C 1.0 1)range +20... – 40 °C 3.0 1)

+110...+120 °C 1.6 1)+120...+140 °C 2.0 1)

1) In each case, increasing linearly to thegiven value.

Accessories

Connector 1237000039

P Pressure-measuring elementwith silicon diaphragm ensures extremely high accuracy andlong-term stability.P Integrated evaluation circuitfor signal amplification andcharacteristic-curve adjustment.P Very robust construction.

pU

Technical data/Range

Part number 0 281 002 257Measuring range 50...400kPaBasic measuring range with enhanced accuracy 70...360kPaResistance to overpressure 600kPaAmbient temperature range/sustained temperature range –40...+120 °CBasic range with enhanced accuracy +20...+110 °CLimit-temperature range, short-time ≤ 140 °CSupply voltage UV 5 V ±10%Current input IV ≤ 12mAPolarity-reversal strength at IV ≤ 100 mA –UV

Short-circuit strength, output To ground and UV

Permissible loadingPull down ≥ 100kΩ

≤ 100nFResponse time t10/90 ≤ 5msVibration loading max. 20gProtection against water

Strong hose water at increased pressure IPX6KHigh-pressure and steam-jet cleaning IPX9K

Protection against dust IP6KX

22223_1021En_038-039 12.07.2001 10:01 Uhr Seite 38


S

321

ø6 ±0,3

O

ø15

,9-

0,2

ø15

,8-

0,2

ø11

,9±0

,15

2555

,1±1

015

0

6,6 ±0,2

62,448,4 ±0,15

6,5 ±0,2

22,5

1,2 x 45°±0,33,6

7 ±0,3

9,3 ±0,3

27,829,6

X X

Dimension drawings.S 3-pole plugO1 O-ring dia. 11.5x2.5 mm HNBR-75-ShA

N

D

p

400 kPa36050

Error% of

stroke, mV

±1.8%, 72

±1.2%, 48

±1.0%, 40

±2.0%, 80

70

Absolute pressure abs

Maximum permissible pressure-measuringerror.

50 100 200 300

1

2

3

4


UAV

400kPa

UA = UV ( pabs

437.5 kPa170

- )

Characteristic curve (UV = 5 V).

Temperature

-40 +20 110 120 140

1

1.6

2

3

°C

k

Temperature-error multiplier.

Explanation of symbols UV Supply voltageUA Output voltage (signal voltage)k Temperature-error multiplierpabs Absolute pressureg Acceleration due to gravity

9.81 m · s–2

D After endurance testN As-new state

Connector-pin assignmentPin 1 UA

Pin 2 +5 VPin 3 Ground

22223_1021En_038-039 12.07.2001 10:01 Uhr Seite 39


Medium-resistant absolute-pressure sensorsMicromechanical typeMeasurement of pressure in gases and liquid mediums up to 600 kPa

P Delivery possible either with-out housing or inside ruggedhousing. P EMC protection up to 100 V ·m–1.P Temperature-compensated.P Ratiometric output signal.P All sensors and sensor cellsare resistive to fuels (incl.diesel), and oils such as enginelube oils.

pU

ApplicationsThese monolithic integrated silicon pres-sure sensors are high-precision measuringelements for measuring the absolute pres-sure. They are particularly suitable for oper-ations in hostile environments, for instancefor measuring the absolute manifold pres-sure in internal-combustion engines.

Design and functionThe sensor contains a silicon chip withetched pressure diaphragm. When achange in pressure takes place, thediaphragm is stretched and the resultingchange in resistance is registered by anevaluation circuit. This evaluation circuit isintegrated on the silicon chip together withthe electronic calibration elements. Duringproduction of the silicon chip, a siliconwafer on which there are a number of sen-sor elements, is bonded to a glass plate.After sawing the plate into chips, the indi-vidual chips are soldered onto a metal basecomplete with pressure connection fitting.When pressure is applied, this is directedthrough the fitting and the base to the rearside of the pressure diaphragm. There is areference vacuum trapped underneath thecap welded to the base. This permits theabsolute pressure to be measured as wellas protecting the front side of the pressurediaphragm. The programming logic inte-grated on the chip performs a calibrationwhereby the calibration parameters arepermanently stored by means of thyristors(Zener-Zapping) and etched conductivepaths. The calibrated and tested sensorsare mounted in a special housing forattachment to the intake manifold.

Signal evaluationThe pressure sensor delivers an analogoutput signal which is ratiometric referredto the supply voltage. In the input stage ofthe downstream electronics, we recom-mend the use of an RC low-pass filter with,for instance, t = 2 ms, in order to suppressany disturbance harmonics which mayoccur. In the version with integrated tem-perature sensor, the sensor is in the formof an NTC resistor (to be operated withseries resistor) for measuring the ambienttemperature.

Installation informationWhen installed, the pressure connectionfitting must point downwards in order thatcondensate cannot form in the pressurecell.

ConstructionSensors with housing:This version is equipped with a robusthousing. In the version with temperaturesensor, the sensor is incorporated in thehousing.Sensors without housing:Casing similar to TO case, pressure isapplied through a central pressure fitting.Of the available soldering pins the followingare needed:Pin 6 Output voltage UA,Pin 7 Ground,Pin 8 +5 V.

1 4

3

5 6 7

2

22223_1021En_040-041 12.07.2001 10:20 Uhr Seite 40


Accessories

For 0 261 230 009, .. 020;0 281 002 137Plug housing 1 928 403 870Contact pin 2-929939-1 4)Individual gasket 1 987 280 106

For 0 261 230 013, .. 022;0 281 002 205, ..420Plug housing 1 928 403 913Contact pin 2-929939-1 4)Individual gasket 1 987 280 106

For 0 281 002 244Plug housing 1 928 403 913Contact pin 2-929939-6 4)Individual gasket 1 987 280 106

For 0 281 002 420Plug housing 1 928 403 736Contact pin 1 928 498 060Individual gasket 1 928 300 599

NoteEach 3-pole plug requires 1 plug housing,3 contact pins, and 3 individual gaskets. 4-pole plugs require 1 plug housing, 4 contact pins, and 4 individual gaskets.

Technical data

min. typical max.Supply voltage UV V 4.5 5 5.5Current input IV at UV = 5 V mA 6 9 12.5Load current at output mA –0.1 – 0.1Load resistance to ground or UV kΩ 50 – –Lower limit at UV = 5 V V 0.25 0.30 0.35Upper limit at UV = 5 V V 4.75 4.80 4.85Output resistance to ground UV open kΩ 2.4 4.7 8.2Output resistance to UV, ground open kΩ 3.4 5.3 8.2Response time t10/90 ms – 0.2 –Operating temperature °C –40 – +125

Limit dataSupply voltage UV V – – 16Operating temperature °C –40 – +130

Recommendation for signal evaluationLoad resistance to UH = 5.5...16 V kΩ – 680 –Load resistance to ground kΩ – 100 –Low-pass resistance kΩ – 21.5 –Low-pass capacitance nF – 100 –

Temperature sensorMeasuring range °C –40 – +125Nominal voltage mA – – 1 5)Measured current at +20 °C kΩ – 2,5±5% –Temperature time constant t63 6) s – – 455) Operation with series resistor 1 kΩ.6) In air with airflow speed 6 m · s–1.

Range

Pressure sensor integrated in rugged, media-resistant housingPressure range Chara. Features Dimension Part numberkPa (p1...p2) curve 1) drawing 2)20...115 1 – 4 1 0 261 230 02020...250 1 – 4 1 0 281 002 13710...115 1 Integrated temperature sensor 2 2 0 261 230 02220...115 1 Integrated temperature sensor 2 2 0 261 230 01320...250 1 Integrated temperature sensor 2 2 0 281 002 20550...350 2 Integrated temperature sensor 5 (5) 3) 0 281 002 24450...400 2 Integrated temperature sensor – – 0 281 002 31650...600 2 Integrated temperature sensor 6 6 0 281 002 42010...115 1 Hose connection 1 (1) 3) 0 261 230 00915...380 2 Clip-type module with 3 3 1 267 030 835

connection cable

Pressure-sensor cells in casings similar to transistorsSuitable for installation inside devicesPressure range Chara. Features Dimension Part numberkPa (p1...p2) curve 1) drawing 2)10...115 1 – 7 7 0 273 300 00615...380 2 – 7 7 0 273 300 01715...380 2 – 8 (7) 3) 0 261 230 03620...105 1 – 7 7 0 273 300 00120...115 1 – 7 7 0 273 300 00220...250 1 – 7 7 0 273 300 00450...350 2 – 7 7 0 273 300 01050...400 2 – 7 7 0 273 300 01950...400 2 – 8 (7) 3) 0 261 230 03350...600 2 – 7 7 0 273 300 0121) The characteristic-curve tolerance and the tolerance extension factor apply to all

versions, refer to Page 42.2) See Page 43/44 3) For similar drawing, see dimension drawing on Pages 43/444) To be obtained from AMP Deutschland GmbH, Amperestr. 7–11, D-63225 Langen,

Tel. 06103/709-0, Fax 06103/7091223, E-Mail: [email protected]

22223_1021En_040-041 12.07.2001 10:20 Uhr Seite 41


Micromechanical TO-design absolute-pressure sensors (contd.)Measurement of pressures in gases and liquid media up to 600 kPa



0 0,2 0,4 0,6 0,8 1,0

P1 P2

%

1

2

3

0

-2

-1

-3

pp∆

°C-40 0 40 80 120

Temperature ϑ

1

2

3

k

D

N

kPaPressure p


Tolerance extension factor.

R = f ( )

Temperature

102

103

104

105

Ω

40 0 40 80 120 °C

Res

ista

nce

R

Temperature-sensor characteristic curve.

Explanation of symbolsUA Output voltageUV Supply voltagek Tolerance multiplication factorD Following endurance testN As-new state

VS

E, K, O

Block diagram.E Characteristic curve: Sensitivity,K Compensation circuitO Characteristic curve: Offset,S Sensor bridge, V Amplifier

3 4 5

1 2 12

121336

111098

7

Sectional views.Pressure sensor in housing.1 Pressure sensor, 2 pcb, 3 Pressure fitting, 4 Housing, 5 Temperature sensor, 6 Electrical bushing, 7 Glass insulation, 8 Reference vacuum, 9 Aluminum connection (bonding wire), 10 Sensor chip, 11 Glass base, 12 Welded connection, 13 Soldered connection.

Section through the installed pressure sensor. Installed pressure sensor. Version with temperature sensor.

V

0

Out

put v

olta

ge U

A

1

2

3

4

54,65

0,40

kPaP2P1pPressure

0,50

4,50

Out

put v

olta

ge U

A

V

0

1

2

3

4

5

pkPaP

Pressure2P1

22223_1021En_042-044 12.07.2001 10:08 Uhr Seite 42


2 0 261 230 013, 0261230022, 0 281 002 205Connector-pin assignmentPin 1 GroundPin 2 NTC resistorPin 3 +5VPin 4 Output signal

Dimension drawings. P Space required by plug and cable.

1 0 261 230 009Connector-pin assignmentPin 1 +5 VPin 2 GroundPin 3 Output signal

3 1 267 030 835Connector-pin assignmentPin 1 GroundPin 2 +5 VPin 3 VacantPin 4 Output signal

4 0 261 230 020, 0 281 002 137Connector-pin assignmentPin 1 +5VPin 2 GroundPin 3 Output signal

PX

70

12

4

28,2

4

15,1

20

26,7

20 16,2

7,8 ± 0,15

R 10

11,7 ± 0,15

3 2 1

X

P

P

+60°-60°

0°

min. 15

15°

min. 4

min. 13,5

8,85

57

min

. 4

min

. 35

6,8

3649

2715

818

6,6

15,5

ø 17,6

3958

1234

12

34

20

ø11,85 ± 0,1

1730

± 0,

512

± 0,

54

PX

70

20 16,2

28,2

4

15,1

26,7

7,8 ± 0,15

R 10

11,7± 0,15

3 2 1

X

70±

5

(3x)

60°

(3x)

1± 0

,15

ø3,

8ø

1,5

± 0,

05

± 0,

1

20+

0,2

5-

0,05

16+

0,2

5-

0,05

3,6

- 0,

1

19,5

12,5 + 0,3- 0,5

1,5+ 0,05- 0,15

72,6 ± 0,45

+ 0,05- 0,15

12

25 + 0,25- 0,05

17 + 0,05- 0,25

5,6

(3x)

2,3 ± 0,3

(3x)

22223_1021En_042-044 12.07.2001 10:08 Uhr Seite 43


Micromechanical TO-design absolute-pressure sensors (contd.)Measurement of pressures in gases and liquid media up to 600 kPa

±0,1

58

55

9,3

12

AIR

A B

ø1,5- 0,05+ 0,150,8

12,5

1,7

max

.

7,62

2,54

2,54

7,62

1,5

- 0,

112

,7+

0,5

2,5

15°m

in.21

min.14,5

min.18,5

min.16min.35

10

1818

ø17,7 ± 0,2

2,1

7,6

15,5

73

2,1ø6,3

± 0,

3 9,5

3654

39

58

4

2718

ø16,6

12

34O

IL

PIN 7

PIN 8

D

PIN 6

2,5

15°m

in.21

min.14,5

min.18,5

min.16min.35

10

1818

ø17,7 ± 0,2

7,6

15,5

73

± 0,

3 9,5

3654

39

58

4

30

18

ø16,6

12

34

A B

1,5

1,5

11,4

12,7

D

L

6,7

6,9

13,6

± 0,

25

(3x)

6,4

± 0,

3

8,8

± 0,

4

5

8,5

± 0,

25

± 0,1

5,2 13,9

± 0,2

7 0 273 300 ..Sensor without housingD Pressure-connection fittingPin 6 Output signalPin 7 Soldered

Dimension drawings A Space required by plug and cableB Space required when plugging in/unplugging

5 0 281 002 244Connector-pin assignmentPin 1 GroundPin 2 NTC resistorPin 3 +5 VPin 4 Output signal

6 0 281 002 246Connector-pin assignmentPin 1 GroundPin 2 NTC resistorPin 3 +5 VPin 4 Output signal

8 0 261 230 036 ..D Pressure connectionL In the area of the measuring

surface

22223_1021En_042-044 12.07.2001 10:08 Uhr Seite 44


Pressure sensorsFor pressures up to 1800 bar (180 Mpa)

Out

put v

olta

ge U

A

Pressure p

35 70 105 140

V

4

4.5

3

2

1

0.5

00

50 100 150 200 2500

250 500 750 1000 1250 15000

bar300 600 900 1200 1500 18000

Characteristic curve.UA = (0.8 · p / pNom. + 0.1)UV

P Ratiometric signal evaluation(referred to supply voltage).P Self-monitoring of offset andsensitivity.P Protection against polarityreversal, overvoltage, and short circuit of output to supplyvoltage or ground.P High level of compatibilitywith media since this onlycomes into contact with stain-less steel.P Resistant to brake fluids,mineral oils, water, and air.

ApplicationPressure sensors of this type are used to measure the pressures in automotivebraking systems, or in the fuel-distributorrail of a gasoline direct-injection engine, or in a diesel engine with Common Railinjection.

Design and functionPressure measurement results from thebending of a steel diaphragm on which arelocated polysilicon strain-gauge elements.These are connected in the form of aWheatstone bridge. This permits highsignal utilisation and good temperaturecompensation. The measurement signal is amplified in anevaluation IC and corrected with respect tooffset and sensitivity. At this point, tempera-ture compensation again takes place sothat the calibrated unit comprisingmeasuring cell and ASIC only has a verylow temperature-dependence level.Part of the evaluation IC is applied for adiagnostic function which can detect thefollowing potential defects:– Fracture of a bonding wire to the

measuring cell.– Fracture anywhere on any of the signal

lines.– Fracture of the bridge supply and

ground.

Only for 0 265 005 303This sensor differs from conventionalsensors due to the following diagnosticfunctions: – Offset errors– Amplification errors can be detected by comparing two signalpaths in the sensor.

Storage conditionsTemperature range –30...+60 °CRelative air humidity 0...80 %Maximum storage period 5 yearsThrough compliance with the abovestorage conditions, it is ensured that thesensor functions remain unchanged.If the maximum storage conditions areexceeded, the sensors should no longer beused.

Explanation of symbolsUA Output voltageUV Supply voltagebar Pressure

22223_1021En_045-049 12.07.2001 10:04 Uhr Seite 45

Pressure sensors (contd.)For pressures up to 1800 bar (180 MPa)

Error band

Limitation, working signal

Error band

90%

96%

4%

Pressure p

12%

Measuringrange

Error range

100 %

Error range

Sensitivity error

Offset error

AU

U

V

Self-monitoring. Offset and sensitivity. Only for 0 265 005 303.

Pressure sensor ECU

3

2

1 GND

Signal (UA)

Pull up resistor

A/D-converterand C

+ 5 V (UV)

Measuring circuit.

Diagnostic function during self-test (following switch-on). Only for 0 265 005 303.– Correctness of the calibration values– Function of the sensor signal path fromthe sensor to the A/D converter of theevaluation unit– Check of the supply lines. Diagram:Characteristic of the output voltagefollowing switch-on– Function of the signal and alarm paths– Detection of offset errors– Detection of short circuits in wiringharness– Detection of overvoltage and under-voltage– If an error is detected during the sensor’sself-test, the signal output is switched tothe voltage range > 96%UV.

Diagnostic function during normaloperation.Only for 0 265 005 303.– Detection of offset errors– Detection of sensitivity errors (with pres-sure applied)– Wiring-harness function, detection ofwiring-harness short circuits– Detection of overvoltage and under-voltage– If an error is detected during the sensor’sself-test, the signal output is switched tothe voltage range >96%UV.

Range

Pressure range Sensor Thread Connector Pin Dimens. Page Part numberbar (MPa) Type drawing140 (14) KV2 BDE M 10x1 Compact 1.1 Gold-plated 1 47 0 261 545 006250 (25) – M 10x1 PSA – 2 48 0 265 005 3031500 (150) RDS2 M 12x1.5 Working circuit Silber-plated 3 48 0 281 002 238

M 12x1.5 Compact 1.1 Gold-plated 4 48 0 281 002 405RDS3 M 12x1.5 Working circuit Silber-plated 5 48 0 281 002 498

M 12x1.5 Compact 1.1 Gold-plated 6 49 0 281 002 5221800 (180) RDS2 M 12x1.5 Compact 1.1 Gold-plated 4 48 0 281 002 398

M 18x1.5 Compact 1.1 Gold-plated 7 49 0 281 002 472RDS3 M 18x1.5 Compact 1.1 Gold-plated 8 49 0 281 002 534

M 18x1.5 Working circuit Silber-plated 9 49 0 281 002 504

Accessories

For 0 265 005 303Plug housing – Quantity required: 1 AMP No. 2-967 642-1 1)Contact pins for 0.75 mm2 Quantity required:3 AMP No. 2-965 907-1 1)Gaskets for 1.4...1.9 mm2 Quantity required: 3 AMP No. 2-967 067-1 1)1) To be obtained from AMP Deutschland GmbH, Amperestr. 7–11, D-63225 Langen,

Tel. 0 61 03/7 09-0, Fax 0 61 03/7 09 12 23, E-Mail: [email protected]


22223_1021En_045-049 12.07.2001 10:04 Uhr Seite 46


Technical data

Pressure sensor 0 261 545 006 0 265 005 303 0 281 002 238 0 281 002 498 0 281 002 398 0 281 002 5340 281 002 405 0 281 002 522 0 281 002 472 0 281 002 504

Pressure-sensor type KV2 BDE – RDS2 RDS3 RDS2 RDS3Application/Medium Unlead. fuel Brake fluid Diesel fuel or Diesel fuel or Diesel fuel or Diesel fuel or

RME 1) RME 1) RME 1) RME 1)Pressure range bar 140 250 1500 1500 1800 1800

(MPa) (14) (25) (150) (150) (180) (180)Offset accuracy UV 0.7 % FS 2.0 % 1.0 % FS 0.7 % FS 1.0 % FS 0.7 % FS

1.5 % FSSensitivity accuracy at 5 V

In range 0...35 bar FS 2) – ≤ 0.7 % 1.0 % FS 0.7 % FS 1.0 % FS 0.7 % FSof 1.5 % FS

In range 35...140 bar meas- 1.5 % – – – – –In range 35...250 bar ured – ≤ 5.0 % 3) – – – –In range 35...1500 bar value – – 2.0 % FS 1.5 % FS – –

2.5 % FSIn range 35...1800 bar – – – – 2.3 % FS 1.5 % FS

Input voltage, max. Us V 16 – 16 16 16 16Power-supply voltage UV V 5 ±0.25 5 ±0.25 5 ±0.25 5 ±0.25 5 ±0.25 5 ±0.25Power-supply current IV mA 9...15 ≤ 20 9...15 9...15 9...15 9...15Output current IA µA...mA – –100...3 2.5 mA 4) – 2.5 mA 4) –Load capacity to ground nF 13 – 10 13 10 13Temperature range °C –40...+130 –40...+120 –40...+120 5) –40...+130 –40...+120 5) –40...+130Overpressure max. pmax bar 180 350 1800 2200 2100 2200Burst pressure pburst bar > 300 > 500 3000 4000 3500 4000Tightening torque Ma Nm 22 ±2 20 ±2 35 ±5 35 ±5 70 ±2 70 ±2Response time T10/90 ms 2 – 5 2 5 2Note: All data are typical values1) RME = Rapeseed methyl ester2) FS = Full Scale3) Of measured value4) Output current with pull-up resistor5) +140 °C for max. 250 h

3,8

21,5

16,5

6 F

Sø 8

,5ø

2,8

M 1

0x1-

6g

ø 2

5

13

SW27

30

2

1 3

2

1 3

± 3

5,3 ± 2

± 0,

1

± 0,

3

59,8

90°

Pin 2

Pin 3Pin 1

24,4

Connector-pin assignmentPin 1 GroundPin 2 Output voltage UAPin 3 Supply voltage UV

Dimension drawingsSpace required by plug, approx. 25 mmSpace required when plugging/unplugging, approx. 50 mmSW = A/F size

0 261 545 006 1140 bar

22223_1021En_045-049 12.07.2001 10:04 Uhr Seite 47


Pressure sensors (contd.)For pressures up to 1800 bar (180 MPa)


0 265 005 303 2250 bar

0 281 002 238 31500 bar

0 281 002 405 41500 bar0 281 002 3981800 bar

0 281 002 498 51500 bar

D GasketF Date of manufactureS 3-pin plug


90°

± 0,1

± 0,2

15,35,3

41 B24,3 A

53,3

3- 0,52,8

± 0,217,1± 0,520,938 ± 0,610 ± 0,1

SW 24

ø25

- 0,

1

M10

x1-

0,1

ø8,

5ø

2,8

± 0,

1

ø22

,1

Pin 2

Pin 3Pin 1

12

3

7

29

R 1,5

± 2

± 2

- 0,10,6

12,5

16

69

F

S

M 1

2x1

,5

ø 2

5

SW27

30

2

1 3

2

1 3D

Pin 2

Pin 3Pin 1

729

R 1,5

± 2

± 2

- 0,10,6

12,5

16

68

F

D

S

M 1

2x1

,5

ø 2

5

13

SW27

30

2

1 3

2

1 3

Pin 2

Pin 3Pin 1

24,4

ø 2

4,8

16,6

6

21,5 ± 2

± 2

± 0,152,15

± 0,

1

± 0,5

± 0,7

12,5

60,5

F

S

M 1

2x1

,5

SW27

30

2

1 3

2

1 3

Pin 2

Pin 3Pin 1

D

22223_1021En_045-049 12.07.2001 10:04 Uhr Seite 48



0 281 002 522 61500 bar

0 281 002 472 71800 bar

0 281 002 534 81800 bar

0 281 002 504 91800 bar


D GasketF Date of manufactureS 3-pin plug

7

29

17,1

69

F

S

ø15

,5

ø12

,6

ø 2

5

13

SW27

30

2

1 3

2

1 3

3,8 -2

± 2

± 2

3

M 18

x1,5

-6g

60°

Pin 2

Pin 3Pin 1

24,4

21,5

6

60,8

F

S

ø15

,5

ø12

,6

± 2

± 2

17,1

15°

M 18

x1,5

-6g

60°

2,5

ø 2

5

SW27

30

2

1 3

2

1 3

Pin 2

Pin 3Pin 1

6

60,4

F

S

24,4

ø 2

5

13

SW27

30

1 3

2

1 3

± 2

21,5

ø15

,5

ø12

,6

± 217,1

15°

M 18

x1,5

-6g

60°

2,5

Pin 2

Pin 1Pin 3

2

6

21,5

R 1

± 2

± 2

± 2

- 0,10,6

12,5

16

59,3

F

D

S

24,4

M 1

2x1

,5-6

g

ø 2

5

13

SW27

30

2

1 3

2

1 3

Pin 2

Pin 3Pin 1

22223_1021En_045-049 12.07.2001 10:04 Uhr Seite 49

50 Temperature sensors A B

NTC temperature sensorsMeasurement of air temperatures between –40 °C and +130 °C

Range

NTC temperature sensorNTC resistor in plastic sheath

Steel housingScrew fastening 0 280 130 039

Polyamide housingPlug-in mounting 0 280 130 092Plug-in mounting 0 280 130 085

Accessories

For 0 280 130 039; .. 085Connector 1 237 000 036

For 0 280 130 092Desig- For cable Part numbernation cross-sectionPlughousing – 1 928 403 137Contact 0.5...1.0 mm2 1 987 280 103pins 1.5...2.5 mm2 1 987 280 105Individual 0.5...1.0 mm2 1 987 280 106gaskets 1.5...2.5 mm2 1 987 280 107

NoteEach 2-pole plug requires 1 plug housing,2 contact pins, and 2 individual gaskets.For automotive applications, original AMPcrimping tools must be used.

Explanation of symbols:R Resistanceϑ Temperature

ϑR

P Measurement with tempera-ture-dependent resistors.P Broad temperature range.

1

2

3

Temperature sensor (principle).1 Electrical connection2 Housing3 NTC resistor

R( )ϑ

Block diagram.

1

3

2

Technical data

Part number 0 280 130 039 0 280 130 085 0 280 130 092Illustration 1 2 3Characteristic curve 1 2 1Measuring range °C –40...+130 –40...+130 –40...+130Permissible temp., max. °C +130 +140 +130Electrical resistance at 20 °C kΩ 2.5 ±5 % 2.4 ±5.4 % 2.5 ±5 %Electrical resistance at –10 °C kΩ 8.26...10.56 – 8.727...10.067Electrical resistance at +20 °C kΩ 2.28...2.72 2.290...2.551 2.375...2.625Electrical resistance at +80 °C kΩ 0.290...0.364 – –Nominal voltage V ≤ 5 ≤ 5 ≤ 5Measured current, max. mA 1 1 1Self-heating at max. permissible power lossP = 2 mW andstationary air (23 °C) K ≤ 2 – ≤ 2Thermal time constant 1) s ca. 20 ≤ 5 2) 44Guide value for permissiblevibration acceleration(sinusoidal vibration) m · s–2 100 100 ≤ 300Corrosion-tested as per DIN 50 018 DIN 50 018 DIN 50 0181) At 20 °C. Time required to reach 63% of final value for difference in resistance, given an abrupt in-crease in air temperature; air pressure 1000 mbar; air-flow rate 6 m · s–1.3) Time constant τ63 in air for a temperature jump of –80 °C to +20 °C at an air-flow rate of ≥ 6 m · s–1.

22223_1021En_050-051 12.07.2001 10:03 Uhr Seite 50

Design and functionNTC sensor:The sensing element of an NTC tempera-ture sensor (NTC = Negative TemperatureCoefficient), is a resistor comprised ofmetal oxides and oxidized mixed crystals.This mixture is produced by sintering andpressing with the addition of bindingagents. For automotive applications, NTCresistors are enclosed in a protectivesheath.If NTC resistors are exposed to externalheat, their resistance drops drastically and, provided the supply voltage remainsconstant, their input current climbs rapidly.This property can be utilised for tempera-ture measurement. NTC resistors are suit-able for an extremely wide range ofambient conditions, and with them it ispossible to measure a wide range of tem-peratures.

Installation instructionsInstallation is to be such that the front partof the sensing element is directly exposedto the air flow.

B A Temperature sensors 51

9

1844

2,5 -0,2

6

4,5

ø15

48,5

5 26

3,5 15

4,5

±0,2

ø5,

2

M 1

2x1,

5

ø8,

5

10

ø22

+0,

1

+0,

1

-0,3

ø16

ø20

±0,3

ca.ø

6

ø5,

2±0

,2

11,9

4±0,3

R 1,5

22 33,7

20,5 +0,5

30,7 +0,5

55

30°

ø 1

2,5

H8

R 56,

5

ø 1

5

h12

max. 20min. 8

1

M6

4,5

ø 1

2h1

2

L

L

1515 ± 0,110

R 5

R 1030°

22

ø 6,6

R 9

ø9,7

0,1

-

ø 9

,3

SW19

BX

Dimension drawings.

0 280 130 039 1SW A/F size

0 280 130 085 2B Mounting screwX Thread in contact areaL Air flow

Temperature

Ω

410

310

210

0 60 120°C–20 10020 40 8010

Res

ista

nce

R

ϑ

Characteristic curve 1.

-40 -20 0 20 40 60 80 100 120°C101

102

103

104

Ω

Temperature ϑ

Res

ista

nce

R

Characteristic curve 2.

0 280 130 092 3

22223_1021En_050-051 12.07.2001 10:03 Uhr Seite 51

52 Temperature sensors A B

NTC temperature sensors Measurement of liquid temperatures from –40 °C to +130 °C

NTC temperature sensorPlastic-sheathed NTC resistor in a brasshousing

Design and functionNTC sensor:The sensing element of the NTC tempera-ture sensor (NTC = Negative TemperatureCoefficient) is a resistor comprised of metaloxides and oxidized mixed crystals. Thismixture is produced by sintering and press-ing with the addition of binding agents. For automotive applications, NTC resistorsare enclosed in a protective housing.If NTC resistors are exposed to externalheat, their resistance drops drastically and, provided the supply voltage remainsconstant, their input current climbs rapidly.This property can be utilised for tempera-ture measurement. NTC resistors are suit-able for use in the most varied ambientconditions, and with them it is possible tomeasure a wide range of liquid tempera-tures.

NoteEach 2-pole plug requires 1 plug housing,2 contact pins, and 2 individual gaskets.For automotive applications, original AMPcrimping tools must be used.

Explanation of symbolsR Resistanceϑ Temperature

ϑR

P For a wide variety of liquid-temperature measurementsusing temperature-dependentresistors.

R( )ϑ

Diagram.

Temperature

Ω

410

310

210

0 60 120°C–20 10020 40 8010

Res

ista

nce

R

ϑ


1

2

3

Temperature sensor (principle)1 Electrical connection2 Housing3 NTC resistor

22223_1021En_052-053 12.07.2001 10:06 Uhr Seite 52

B A Temperature sensors 53

Dimension drawing.S PlugF Blade terminalSW A/F size

0 280 130 026

Technical data

Part number 0 280 130 026 0 280 130 093 0 281 002 170 0 281 002 209 0 281 002 412Application/medium Water Water Oil/Water Water WaterMeasuring range °C –40...+130 –40...+130 –40...+150 –40...+130 –40...+130Tolerance at +20 °C °C 1.2 1.2 ±1.5 ±1.5 ±1.5

+100 °C °C 3.4 3.4 ±0.8 ±0.8 ±0.8Nominal resistance at 20 °C kΩ 2.5 ±5 % 2.5 ±5 % 2.5 ±6 % 2.5 ±6 % 2.5 ±6 %Electrical resistance at –10 °C kΩ 8.26…10.56 8.727...10.067 8.244...10.661 8.244...10.661 8.244...10.661

+20 °C kΩ 2.28…2.72 2.375...2.625 2.262...2.760 2.262...2.760 2.262...2.760+80 °C kΩ 0.290…0.364 – 0.304…0.342 0.304…0.342 0.304…0.342

Nominal voltage V ≤ 5 ≤ 5 ≤ 5 ≤ 5 ≤ 5Measured current, max. mA 1 1 1 1 1Thermal time constant s 44 44 15 15 15Max. power loss at ∆T ≈ 1K and stationary air 23 °C m · s–2 100 ≤ 300 ≤ 300 ≤ 300 ≤ 300Degree of protection 1) IP 54A IP 64K IP 64K IP 64K IP 64KThread M 12 x 1.5 M 12 x 1.5 M 12 x 1.5 M 12 x 1.5 M 14 x 1.5Corrosion-tested as per DIN 50 018 DIN 50 018 DIN 50 021 2) DIN 50 021 2) DIN 50 021 2)Plugs Jetronic, Compact 1, Compact 1, Compact 1.1, Compact 1.1,

Tin-plated pins Tin-plated pins Gold-plated pins Tin-plated pins Tin-plated pinsTightening torque Nm 25 18 18 25 201) With single-conductor sealing2) Saline fog 384 h

0 280 130 093,0 281 002 170

F

0 281 002 209

0 281 002 412

M12

x1,5

S

15

7,5

-0,3

52817

SW19

50,5

±0,156,45

1,2 ±0,1

60,9

157,5

20°

M12

x1,5

17

28 5

SW 19

S

±0,156,45

1,2 ±0,1

157,5

20°

32,9

M12

x1,5

17

28 5

57,9

SW 19

S

M14

x1,5

60,9

157,5

20°

16

28 5

SW 19

S±0,156,45

1,2 ±0,1

F

F

Accessories

For 0 280 130 026Designation Part number

Connector 1 237 000 036

For 0 280 130 093, 0 281 002 170Desig- For cable Part numbernation cross-sectionPlughousing – 1 928 403 137Contact 0.5 ... 1.0 mm2 1 987 280 103pins 1.5 ... 2.5 mm2 1 987 280 105Individual 0.5 ... 1.0 mm2 1 987 280 106gaskets 1.5 ... 2.5 mm2 1 987 280 107

For 0 281 002 209, 0 281 002 412Desig- For cable Part numbernation cross-sectionPlughousing – 1 928 403 874Contact 0.5 ... 1.0 mm2 1 928 498 060pins 1.5 ... 2.5 mm2 1 928 498 061Individual 0.5 ... 1.0 mm2 1 928 300 599gaskets 1.5 ... 2.5 mm2 1 928 300 600

22223_1021En_052-053 12.07.2001 10:06 Uhr Seite 53

54 Air-mass meters A B

Hot-film air-mass meter, type HFM 2Measurement of air-mass throughflow up to 1080 kg/h


Part number 0 280 217 102 0 280 217 120 0 280 217 519 0 280 217 8010 280 217 107

Characteristic curve 1 2 3 4Installation length L mm 130 130 130 130

96Air-flow measuring

range kg · h–1 10...350 10...480 12...640 20...1080Accuracy referred to

measured value % ±4 ±4 ±4 ±4Supply voltage V 14 14 14 14Input current

at 0 kg · h–1 A ≤ 0,25 ≤ 0,25 ≤ 0,25 ≤ 0,25at Qm nom. A ≤ 0,8 ≤ 0,8 ≤ 0,8 ≤ 0,8

Time constant 1) ms ≤20 ≤20 ≤20 ≤20Temperature range

Sustained °C –30...+110 –30...+110 –30...+110 –30...+110Short-term °C –40...+125 –40...+125 –40...+125 –40...+125

Pressure dropat nominal air mass hPa mbar <15 <15 <15 <15

Vibration accelerationmax. m · s–2 150 150 150 150

1) In case of sudden increase of the air-mass flow from 10 kg · h–1 auf 0.7 Qm nominal, time required to reach 63%of the final value of the air-mass signal.

Qm

U

P Measurement of air mass(gas mass) throughflow per unitof time, independent of densityand temperature.P Extensive measuring range.P Highly sensitive, particularlyfor small changes in flow rate.P Wear-free since there are nomoving parts.P Insensitive to dirt andcontamination.

ApplicationMeasurement of air-mass flow rate to pro-vide data needed for clean combustion.Air-mass meters are suitable for use withother gaseous mediums.

Design and functionThe sensor element comprises a ceramicsubstrate containing the following thick-filmresistors which have been applied usingsilk-screen printing techniques: Air-temper-ature-sensor resistor Rϑ, heater resistorRH, sensor resistor RS, and trimmer resistorR1.The heater resistor RH maintains the plati-num metallic-film resistor RS at a constanttemperature above that of the incoming air.The two resistors are in close thermalcontact.The temperature of the incoming air in-fluences the resistor Rϑ with which thetrimmer resistor R1 is connected in series.Throughout the complete operating-temper-ature range it compensates for the bridgecircuit’s temperature sensitivity. Togetherwith R2 and Rϑ, R1 forms one arm of thebridge circuit, while the auxiliary resistor R3and sensor resistor RS form the other arm.The difference in voltage between the twoarms is tapped off at the bridge diagonaland used as the measurement signal. The evaluation circuit is contained on asecond thick-film substrate. Both hybridsare integrated in the plastic housing of theplug-in sensor. The hot-film air-mass meter is a thermalflowmeter. The film resistors on the ceram-ic substrate are exposed to the air massunder measurement. For reasons asso-ciated with flow, this sensor is far lesssensitive to contamination than, forexample, a hot-wire air-mass meter, andthere is no need for the ECU to incorporatea self-cleaning burn-off function.

1 2 3

4

0 200 400 600 800 kg .h-10

1

2

3

Out

put v

olta

ge U

A

4

5

V

Mass rate of flow Qm

Characteristic curves.

R3 R2

RT

R1

RH

+-

+-

1 2 3 4

RS

R5

C4

Uk

Operating principle.

22223_1021En_054-055 12.07.2001 10:05 Uhr Seite 54

B A Air-mass meters 55

1

2

3

4

5

6

Dimension drawings.E Plug-in sensor, M Measurement venturi, S1/S2 Plug connection

Measure- Plug-inØ A Ø B C D E H K L M R ment venturi connection Part number60 66 70 73 86 33 75 130 82 37 KS S1 0 280 217 10270 76 50 69 82 34.8 – 96 – 42 KS S1 0 280 217 10770 76 70 69 82 33.5 85 130 92 42 KS S2 0 280 217 12080 86 70 73 86 39 – 130 – – KS S2 0 280 217 51995.6 102 70 76.2 91.2 45 110 130 117 54 Alu S1 0 280 217 801

S1 S2

Plug-in sensor.1 Sensor, 2 Hybrid, 3 Power module, 4 Mounting plate, 5 Heat sink, 6 Plug housing

RT

R1

RS

RH

G

S

H2

H1

T

Q m

A

B

Sensor element with thick-film resistors.QM Mass rate of flow, R1 Trimmer resistor, RH Heater resistor, RS Sensor resistor, RT Air-temperature measuring resistor, A Front, B Rear

Installation instructionsWater and other liquids must not collect inthe measurement venturi. The measure-ment venturi must therefore be inclined byat least 5° relative to the horizontal. Sincecare must be taken that the intake air isfree of dust, it is imperative that an air filteris fitted.

Explanation of symbols:R1 Trimmer resistorR2, R3 Auxiliary resistorsR5, C4 RC elementRH Heater resistorRS Platinum metal-film resistorRT Resistance of the air-temperature-

sensor resistorUK Bridge supply voltageUA Output voltageUV Supply voltage

Connector-pin assignmentPin 1 GroundPin 2 UA(–)Pin 3 UVPin 4 UA(+)

AccessoriesFor 0 280 217 102, .. 107, .. 801Plug housing 1 284 485 118Receptacle 1 284 477 121 1)Protective cap 1 280 703 023 1)Each 4-pole plug requires 1 plug housing,4 receptacles, and 1 protective cap.1) Quantity 5 per package

For 0 280 217 120, .. 519Desig- For conductor Part numbernation cross-sectionPlug housing – 1 928 403 112Contact 0.5...1.0 mm2 1 987 280 103pin 1.5...2.5 mm2 1 987 280 105Individual 0.5...1.0 mm2 1 987 280 106gasket 1.5...2.5 mm2 1 987 280 107Each 4-pole plug requires 1 plug housing,4 contact pins, and 4 individual gaskets.

NoteFor automotive applications, original AMPcrimping tools must be used.

E

D

20

L

5 ± 0,3

22,3± 0,3

M E S1

R

28

18

ø H

45

4,5± 0,3

M ± 1

K ± 0,5

43 ± 0,5

R 1

± 0,

3

4 3 2 1

ø B

ø A

± 0,

5

47

ø A

± 0,

5

68

ø 22

C

4 3 2 1

øBø

A±

0,4

47ø

A±

0,4

68

25±

0,25

± 0,2550M6

± 0,238

C

22223_1021En_054-055 12.07.2001 10:05 Uhr Seite 55

56 Air-mass meters A B

Hot-film air-mass meter, Type HFM 5Measurement of air-mass throughflow up to 1000 kg/h

Technical data / range

Nominal supply voltage UN 14 VSupply-voltage range UV 8...17 VOutput voltage UA 0...5 VInput current IV < 0.1 APermissible vibration acceleration ≤ 150 ms–2

Time constant τ63 1) ≤ 15 msTime constant τ∆ 2) ≤ 30 msTemperature range –40...+120 °C 3)

Part number 0 280 217 123 0 280 218 019 0 280 217 531 0 280 218 008 0 281 002 421Measuring range Qm 8...370 kg/h 10...480 kg/h 12...640 kg/h 12...850 kg/h 15...1000 kg/hAccuracy 4) ≤ 3% ≤ 3% ≤ 3% ≤ 3% ≤ 3%Fitting length LE 22 mm 22 mm 22 mm 16 mm 22 mmFitting length LA 20 mm 20 mm 20 mm 16 mm 20 mmInstallation length L 96 mm 96 mm 130 mm 100 mm 130 mm Connection diam. D 60 mm 70 mm 80 mm 86/84 mm 6) 92 mmVenturi ID 50 mm 62 mm 71 mm 78 mm 82 mmPressure drop at nominal air mass 5) < 20 hPa < 15 hPa < 15 hPa < 15 hPa < 15 hPaTemperature sensor Yes Yes Yes No YesVersion 1 2 3 4 51) In case of sudden increase of the air-mass flow from 10 kg · h–1 auf 0,7 Qm nominal, time required to reach

63% of the final value of the air-mass signal.2) Period of time in case of a throughflow jump of the air mass | ∆ m/m | ≤ 5%. 3) For a short period up to +130 °C.4) |∆Qm/Qm|: The measurement deviation ∆Qm from the exact value, referred to the measured value Qm. 5) Measured between input and output6) Inflow/outflow end

Accessories for connector

Plug housing Contact pins Individual gaskets For conductor cross-section1 928 403 836 1 987 280 103 1 987 280 106 0.5...1 mm2

1 987 280 105 1 987 280 107 1.5...2.5 mm2

Note: Each 5-pole plug requires 1 plug housing, 5 contact pins, and 5 individual gaskets.For automotive applications, original AMP crimping tools must be used.

ApplicationIn order to comply with the vehicleemission limits demanded by law, it isnecessary to maintain a given air/fuel ratioexactly. This requires sensors which preciselyregister the actual air-mass flow and outputa corresponding electrical signal to theopen and closed-loop control electronics.

DesignThe micromechanical sensor element islocated in the plug-in sensor’s flow pas-sage. This plug-in sensor is suitable forincorporating in the air filter or, using ameasurement venturi, in the air-intake pas-sages. There are different sizes of mea-surement venturi available depending uponthe air throughflow. The micromechanicalmeasuring system uses a hybrid circuit,and by evaluating the measuring data isable to detect when return flow takes placeduring air-flow pulsation.

Operating principleThe heated sensor element in the air-massmeter dissipates heat to the incoming air.The higher the air flow, the more heat isdissipated. The resulting temperature differ-ential is a measure for the air mass flowingpast the sensor. An electronic hybrid circuit evaluates thismeasuring data so that the air-flow quantitycan be measured precisely, and its direc-tion of flow.Only part of the air-mass flow is registeredby the sensor element. The total air massflowing through the measuring tube isdetermined by means of calibration, knownas the characteristic-curve definition.

Qm

U

P Compact design.P Low weight.P Rapid response.P Low power input.P Return-flow detection.

ApplicationIn internal-combustion engines, this sensoris used for measuring the air-mass flow so that the injected fuel quantity can beadapted to the presently required power, tothe air pressure, and to the air temperature.

Explanation of symbolsQm Air-mass flow rate∆Qm Absolute accuracy ∆Qm/Qm Relative accuracy τ∆ Time until measuring error is

≤ 5%τ63 Time until measured-value change

63%

22223_1021En_056-057 12.07.2001 10:07 Uhr Seite 56

B A Air-mass meters 57

1

2

3

4

5

ϑu

ϑ ϑ

ϑ

ϑ

UK

RH

Function diagram with connector-pin assignment.1 Additional temperature sensor ϑu (not on version 4, Part number 0 280 218 008), 2 Supply voltage UV, 3 Signal ground, 4 Reference voltage 5 V, 5 Measurement signal UA.ϑ Temperature-dependence of the resistor, RH Heater resistor, UK Constant voltage

1

4

5

2

3

8

7 6

HFM 5 plug-in sensor design.1 Measuring-passage cover, 2 Sensor, 3 Mounting plate, 4 Hybrid-circuit cover, 5 Hybrid, 6 Plug-in sensor, 7 O-ring, 8 Auxiliary temperature sensor.

00

1

2

3

4

5

V

200 400

Air-mass flow Qm

600 800 1000 kg/h

2 3 4 51

Out

put v

olta

ge U

A

Air-mass meter output voltage.

2

3

L

D

LE

1

LA

Dimensions overview of the HFM 5.1 Plug-in sensor, 2 Throughflow direction, 3 Measurement venturi.

-400

10

20

30

40

kΩ

-20 ±0 20 40 60 80 100 °CTemperature ϑ

Res

ista

nce

Rϑ

Rϑ Nom.

Nominal resistance R ϑ Nom. at 25 °C: 2.00 kΩ ± 5 %

Output voltage UA = f(Qm) of the air-mass meterPart number 0 280 217 123 0 280 218 019 0 280 217 531 0 280 218 008 0 280 002 421Characteristic curve 1 2 3 4 5Qm/kg/h UA/V UA/V UA/V UA/V UA/V1118 1.4837 1.2390 – – –1110 1.5819 1.3644 1.2695 – –1115 1.7898 1.5241 1.4060 1.3395 1.23151130 2.2739 1.8748 1.7100 1.6251 1.47581160 2.8868 2.3710 2.1563 2.0109 1.83101120 3.6255 2.9998 2.7522 2.5564 2.30741250 4.4727 3.7494 3.5070 3.2655 2.92121370 4.9406 4.1695 3.9393 3.6717 3.28741480 – 4.4578 4.2349 3.9490 3.54611640 – – 4.5669 4.2600 3.84321850 – – – 4.5727 4.14991000 – – – – 4.3312

Temperature-dependence Rϑ = f(ϑ) of the temperature sensor Temperature ϑ °C –40 –30 –20 –10 ±0 10 20 30 40Resistance Rϑ kΩ 39.26 22.96 13.85 8.609 5.499 3.604 2.420 1.662 1.166Temperature ϑ °C 50 60 70 80 90 100 110 120 130Resistance Rϑ Ω 835 609 452 340 261 202 159 127 102

Temperature-resistance diagram of the temperature sensor.

22223_1021En_056-057 12.07.2001 10:07 Uhr Seite 57

58 Lambda oxygen sensors A B

“Lambda” oxygen sensors, Type LSM 11For measuring the oxygen content

ApplicationCombustion processes– Oil burners– Gas burners– Coal-fired systems– Wood-fired systems– Bio refuse and waste– Industrial furnaces

Engine-management systems– Lean-burn engines– Gas engines– Block-type thermal power stations

Industrial processes– Packaging machinery and installations– Process engineering– Drying plants– Hardening furnaces– Metallurgy (steel melting)– Chemical industry (glass melting)

Measuring and analysis processes– Smoke measurement– Gas analysis– Determining the Wobb index

λU

P Principle of the galvanicoxygen concentration cell withsolid electrolyte permits mea-surement of oxygen concentra-tion, for instance in exhaustgases.P Sensors with output signalwhich is both stable and insen-sitive to interference, as well as being suitable for extremeoperating conditions.

Installation instructionsThe Lambda sensor should be installed ata point which permits the measurement ofa representative exhaust-gas mixture, andwhich does not exceed the maximumpermissible temperature. The sensor isscrewed into a mating thread and tightenedwith 50…60 N · m.

– Install at a point where the gas is as hotas possible.– Observe the maximum permissibletemperatures.– As far as possible install the sensor verti-cally, whereby the electrical connectionsshould point upwards. – The sensor is not to be fitted near to theexhaust outlet so that the influence of theoutside air can be ruled out. The exhaust-gas passage opposite the sensor must befree of leaks in order to avoid the effects ofleak-air.– Protect the sensor against condensationwater.– The sensor body must be ventilated fromthe outside in order to avoid overheating.– The sensor is not to be painted, nor iswax to be applied or any other forms oftreatment. Only the recommended greaseis to be used for lubricating the threads.– The sensor receives the reference airthrough the connection cable. This meansthat the connector must be clean and dry.Contact spray, and anti-corrosion agentsetc. are forbidden.– The connection cable must not besoldered. It must only be crimped,clamped, or secured by screws.

RangeSensorTotal length = 2500 mm 0 258 104 002*Total length = 650 mm 0 258 104 004* Standard version

AccessoriesConnector for heater elementPlug housing 1 284 485 110Receptacles 1) 1 284 477 121Protective cap 1 250 703 001

Connector for the sensorCoupler plug 1 224 485 018Blade terminal 1) 1 234 477 014Protective cap 1 250 703 001

Special grease for the screw-in threadTin 120 g 5 964 080 1121) 5 per pack2 needed in each case

Special accessoriesPlease enquire regarding analysing unitLA2. This unit processes the output signalsfrom the Lambda oxygen sensors listedhere, and displays the Lambda values indigital form. At the same time, these valuesare also made available at an analog out-put, and via a multislave V24 interface.

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B A Lambda oxygen sensors 59

Technical data

Application conditionsTemperature range, passive (storage-temperature range) –40…+100 °CSustained exhaust-gas temperature with heating switched on +150…+600 °CPermissible max. exhaust-gas temperature with heating switched on

(200 h cumulative) +800 °COperating temperature

of the sensor-housing hexagon ≤ +500 °CAt the cable gland ≤ +200 °CAt the connection cable ≤ +150 °CAt the connector ≤ +120 °C

Temperature gradient at the sensor-ceramic front end ≤ +100 K/sTemperature gradient at the sensor-housing hexagon ≤ +150 K/sPermissible oscillations at the hexagon

Stochastic oscillations – acceleration, max. ≤ 800 m · s–2

Sinusoidal oscillations – amplitude ≤ 0.3 mmSinusoidal oscillations – acceleration ≤ 300 m · s–2

Load current, max. ±1 µA

Heater elementNominal supply voltage (preferably AC) 12 Veff

Operating voltage 12…13 VNominal heating power for ϑGas = 350 °C and exhaust-gas flow speed of ≈ 0.7 m · s–1 at 12 V heater voltage in steady state ≈ 16 WHeater current at 12 V steady state ≈ 1.25 AInsulation resistance between heater and sensor connection > 30 MΩ

Data for heater applicationsLambda control range λ 1.00…2.00Sensor output voltage for λ = 1.025…2.00 at ϑGas = 220 °C and a flow rate of 0.4…0.9 m · s–1 68…3.5 mV 2)Sensor internal resistance Ri~ in air at 20 °C and at 12 V heater voltage ≤ 250 ΩSensor voltage in air at 20 °C in as-new state and at 13 V heater voltage –9...–15 mV 3)Manufacturing tolerance ∆ λ in as-new state (standard deviation 1 s)at ϑGas = 220 °C and a flow rate of approx. 0.7 m · s–1

at λ = 1.30 ≤ ±0.013 at λ = 1.80 ≤ ±0.050

Relative sensitivity ∆ US/∆ λ at λ = 1.30 0.65 mV/0.01Influence of the exhaust-gas temperature on sensor signal for a temperature increase from 130 °C to 230 °C, at a flow rate ≤ 0.7 m · s–1

at λ = 1.30; ∆ λ ≤ ±0.01Influence of heater-voltage change ±10 % of 12 V at ϑGas = 220 °C

at λ = 1.30; ∆ λ ≤ ±0.009 at λ = 1.80; ∆ λ ≤ ±0.035

Response time at ϑGas = 220 °C and approx. 0.7 m · s–1 flow rateAs-new values for the 66% switching point; λ jump = 1.10 ↔ 1.30

for jump in the “lean” direction 2.0 sfor jump in the “rich” direction 1.5 s

Guideline value for sensor’s “readines for control” point to be reached after switching on oil burner and sensor heater;ϑGas ≈ 220 °C; flow rate approx. 1.8 m · s–1;λ = 1.45; sensor in exhaust pipe dia. 170 mm 70 sSensor ageing ∆ λ in heating-oil exhaust gas after 1,000 h continuous burner operation with EL heating oil; measured at ϑGas = 220 °C

at λ = 1.30 ≤ ±0.012at λ = 1.80 ≤ ±0.052

Useful life for ϑGa < 300 °C In individual cases to be checked bycustomer; guideline value > 10,000 h

2) See characteristic curves. 3) Upon request –8.5...–12 mV.

Warranty claimsIn accordance with the general Terms ofDelivery A17, warranty claims can only beaccepted under the conditions that permis-sible fuels were used. That is, residue-free,gaseous hydrocarbons and light heating oilin accordance with DIN 51 603.

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60 Lambda oxygen sensors A B

λU

Design and functionThe ceramic part of the Lambda sensor(solid electrolyte) is in the form of a tubeclosed at one end. The inside and outsidesurfaces of the sensor ceramic have amicroporous platinum layer (electrode)which, on the one hand, has a decisive in-fluence on the sensor characteristic, andon the other, is used for contacting purpo-ses. The platinum layer on that part of thesensor ceramic which is in contact with theexhaust gas is covered with a firmly bond-ed, highly porous protective ceramic layerwhich prevents the residues in the exhaustgas from eroding the catalytic platinumlayer. The sensor thus features good long-term stability. The sensor protrudes into the flow of ex-haust gas and is designed such that the ex-haust gas flows around one electrode,whilst the other electrode is in contact withthe outside air (atmosphere). Measure-ments are taken of the residual oxygen con-tent in the exhaust gas.The catalytic effect of the electrode surfaceat the sensor’s exhaust-gas end producesa step-type sensor-voltage profile in thearea around λ = 1. 1)

The active sensor ceramic (ZrO2) is heatedfrom inside by means of a ceramic Wolframheater so that the temperature of the sen-sor ceramic remains above the 350 °Cfunction limit irrespective of the exhaust-gas temperature. The ceramic heaterfeatures a PTC characteristic, which re-sults in rapid warm-up and restricts thepower requirements when the exhaust gasis hot. The heater-element connections arecompletely decoupled from the sensorsignal voltage (R ≥ 30 MΩ). Additionaldesign measures serve to stabilize the leancharacteristic-curve profile of the TypeLSM11 Lambda sensor at λ > 1.0...1.5 (forspecial applications up to λ = 2.0):– Use of powerful heater (16 W)– Special design of the protective tube– Modified electrode/protective-layersystem.

1) The excess-air factor (λ) is the ratio be-tween the actual and the ideal air/fuel ratio.

The special design permits: – Reliable control even with low exhaust-gas temperatues (e.g. with engine at idle),– Flexible installation unaffected by externalheating,– Function parameters practically indepen-dent of exhaust-gas temperature,– Low exhaust-gas values due to thesensor’s rapid dynamic response,– Little danger of contamination and thuslong service life,– Waterproof sensor housing.

Explanation of symbolsUS Sensor voltageUH Heater voltageϑA Exhaust-gas temperatureλ Excess-air factor 1)O2 Oxygen concentration in %

X

A-+

E

C

D

g

sw

wsSW 22 21

,8

ø12

M18

x1,5

6e

ø22

,6

73

10,528,2

66 L-200L

B

-

X+

Dimension drawing.A Signal voltage, B Heater voltage, C Cable sleeve and seals, D Protective tube, E Protective sleeve, L Overall length. ws White, sw Black, g Grey.

Air4

3

1 2

5 6

Us

Exhaust gas

Lambda sensor in exhaust pipe (principle).1 Sensor ceramic, 2 Electrodes, 3 Contact, 4 Housing contact, 5 Exhaust pipe, 6 Ceramicprotective coating (porous).

1.0 1.2 1.61.4 λ

30

20

10

0

mV

1.8 2.0

UH = 12 V

A = 220°C

3.31 5.71 7.54 8.98 10.14%O

US

Sen

sor

volta

ge

2

ϑ

Characteristic curve: Propane gas(lean range).

0.8 1.0 1.2 1.61.4

Excess-air factor λ

US

mV

1.8 2.0

UH = 12 V

A = 220°C

1

2

Sen

sor

volta

geϑ

200

400

600

800 a

b

Characteristic curve: Complete range.1 Closed-loop control λ = 1; 2 Lean controla Rich A/F mixture, b Lean A/F mixture

22223_1021En_058-060 12.07.2001 10:06 Uhr Seite 60

B A Sensors Enquiry data sheet

If your requirements go beyond our sensor range, please indicate thison the following data sheet. In the case of modifications, please statethe product with which you are familiar in the box below.

BoschPart No.:

Please use the data sheet printed here as a copy and returnthe copy to us after filling it in appropriately.

Address: Customer address:

Robert Bosch GmbHAbt. KH/PKNPostfach 41 09 60

D-76225 KarlsruheFax: 07 21/9 42-25 20

Your ref. Our department/person to contact Telephone (extension) Date

Project, application:

Sensor requirementsMeasured variable:

Secondary conditions:

Remarks:

Usage conditionsBrief description:

Specifications available Yes No

Quantity requiredOnce-only Qty.

Envisaged delivery date

Following quantity on following dates

DateQuantity

Yearly Qty. Monthly Qty.

Advice required

2001/2002

22223_1021En_U3 27.06.2001 8:05 Uhr Seite 3

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