Temperature measuring and monitoring · (current feed and high-ohmic voltage interrogation).The measuring result is not falsified.The lines can have different resistances. Disadvantage:

Temperature measuring and monitoring● Stainless steel temperature transmitters and sensors Pt 100/Pt 1000● Thermostats (also in Ex-versions)

Hf

14103_TTS62/4_GB_2000_Temp 06.11.2000 9:08 Uhr Seite 2

CONTENTSPage

General notes on temperature measurement

with resistance sensors 3Stainless steel

temperature

transmitters

and sensors

Stainless steel temperature transmitters 4

Stainless steel temperature sensors 5

Evaluation units Programmable digital displays with

2 limit value switches 6

Mechanical

thermostats(general notes)

The most important technical datas 8/9

Switching units 10

Temperature monitoring in

explosion-endangered areas 10

Mounting and adjustment 11/12

Room thermostats 13

Rod thermostats 14

Capillary tube thermostats 15

Frost protection thermostats 16

Two-phase frost protection 7

Accessories Immersion tubes 17

Wall brackets, plugs 18

Temperature monitors

and limiters –

TÜV component

tested

Temperature monitors and limiters –

component tested according to DIN 3440

(for steam and hot water) 19

3

Temperature

sensors

General notes on temperature measurementwith resistance sensors Pt 100 and Pt 1000

Connection possibilitiesfor Pt sensors

Two-wire connection

Advantage: Only 2 wires

Disadvantage: The line resistance RL

falsifies the measuring

result

Three-wire connection

Advantage: The line resistances are

taken into account

by the evaluation

electronics. The

measuring result is not

falsified

Disadvantage: 3 wires are required.

All 3 wires must have

the same resistance

Four-wire connection

Power supply

Advantage: The line resistances

do not play any role

because of the

evaluation electronics

(current feed and

high-ohmic voltage

interrogation). The

measuring result is

not falsified. The lines

can have different

resistances.

Disadvantage: 4 wires are required.

Connection wires with the same

colours are connected with one

another electrically.

Platinum temperature sensors Pt 00 or Pt 000 make use of the constant change in

resistance of materials with changing temperatures. Because of its good stability and high

reproducibility, a platinum-rhodium alloy specially suited for this is mainly used. The

resistance of the sensor becomes larger as the temperature rises.

The resistance values are stipulated in DIN IEC 75 as follows:

Pt 100 = 100 ohms at 0 hCPt 1000 = 1000 ohms at 0 hC

The resistance values for all temperatures are quoted in the above mentioned standard.The

resistance sensors are divided into 2 classes in accordance with their limiting deviations.

Class A: 0.15 K + 0.002 x t

Class B: 0.30 K + 0.005 x t*

*t is the numerical value of the temperature in hC (without taking the sign into account)

Resistance value of the Pt 00 sensors (excerpt from DIN 43 760, IEC 75)

Tempe- Basic values for Pt 00 (Ohm) Tempe-

rature rature

hC 0 2 3 4 5 6 7 8 9 0 hC

– 50 80.31 79.91 79.51 79.11 78.72 78.32 77.92 77.52 77.13 76.73 76.33 – 50

– 40 84.27 83.88 83.48 83.08 82.69 82.29 81.89 81.50 81.10 80.70 80.31 – 40

– 30 88.22 87.83 87.43 87.04 86.64 86.25 85.85 85.46 85.06 84.67 84.27 – 30

– 20 92.16 91.77 91.37 90.98 90.59 90.19 89.80 89.40 89.01 88.62 88.22 – 20

– 10 96.09 95.69 95.30 94.91 94.52 94.12 93.73 93.34 92.95 92.55 92.16 – 10

0 100.00 99.61 99.22 98.83 98.44 98.04 97.65 97.26 96.87 96.48 96.09 0

0 100.00 100.39 100.78 101.17 101.56 101.95 102.34 102.73 103.12 103.51 103.90 0

10 103.90 104.29 104.68 105.07 105.46 105.85 106.24 106.63 107.02 107.40 107.79 10

20 107.79 108.18 108.57 108.96 109.35 109.73 110.12 110.51 110.90 111.28 111.67 20

30 111.67 112.06 112.45 112.83 113.22 113.61 113.99 114.38 114.77 115.15 115.54 30

40 115.54 115.93 116.31 116.70 117.08 117.47 117.85 118.24 118.62 119.01 119.40 40

50 119.40 119.78 120.16 120.55 120.93 121.32 121.70 122.09 122.47 122.86 123.24 50

60 123.24 123.62 124.01 124.39 124.77 125.16 125.54 125.92 126.31 126.69 127.07 60

70 127.07 127.45 127.84 128.22 128.60 128.98 129.37 129.75 130.13 130.51 130.89 70

80 130.89 131.27 131.66 132.04 132.42 132.80 133.18 133.56 133.94 134.32 134.70 80

90 134.70 135.08 135.46 135.84 136.22 136.60 136.98 137.36 137.74 138.12 138.50 90

100 138.50 138.88 139.26 139.64 140.02 140.39 140.77 141.15 141.53 141.91 142.29 100

110 142.29 142.66 143.04 143.42 143.80 144.17 144.55 144.93 145.31 145.68 146.06 110

120 146.06 146.44 146.81 147.19 147.57 147.94 148.32 148.70 149.07 149.45 149.82 120

130 149.82 150.20 150.57 150.95 151.33 151.70 152.08 152.45 152.83 153.20 153.58 130

140 153.58 153.95 154.32 154.70 155.07 155.45 155.82 156.19 156.57 156.94 157.31 140

150 157.31 157.69 158.06 158.43 158.81 159.18 159.55 159.93 160.30 160.67 161.04 150

160 161.04 161.42 161.79 162.16 162.53 162.90 163.27 163.65 164.02 164.39 164.76 160

170 164.76 165.13 165.50 165.87 166.24 166.61 166.98 167.35 167.72 168.09 168.46 170

180 168.46 168.83 169.20 169.57 169.94 170.31 170.68 171.05 171.42 171.79 172.16 180

190 172.16 172.53 172.90 173.26 173.63 174.00 174.37 174.74 175.10 175.47 175.84 190

200 175.84 176.21 176.57 176.94 177.31 177.68 178.04 178.41 178.78 179.14 179.51 200

The resistance values of the Pt 000 are higher by one power of ten.

When Pt sensors are connected, the line resistances between the measuring point and

evaluation unit (e. g. transmitter) must be taken into account (see narrow column).

All FEMA evaluation units (transmitters and temperature switches) have an input circuit for

3-wire connection. The sensors must be connected in accordance with the following

diagrams. All 3 wires must be of equal length and have the same wire cross section to

compensate for the line resistances.

Two-wire sensor Three-wire sensor Four-wire sensor

Evaluation unit for

three-wire

connection

Evaluation unit for

three-wire

connection

Evaluation unit for

three-wire

connection

Measured valve

4

Typeseries

PZ 17

Temperature transmitters, output signal 4–20 mAmade of high-grade steel, sensor Pt 100

Technical data

Temperature ranges

Range No.

–50 . . . + 50 hC 55

–50 . . . +100 hC 51

0 . . . 50 hC 50

0 . . . 100 hC 100

0 . . . 200 hC 200

The no. has to be added to the temperature

range, e. g. PZ 171–200/200

Action direction

Rising temperature produces rising output

signal.

Installation position

arbitrary

Protective category

IP 65

Electrical connection

cable entry Pg

Operating voltage

12–36 V DC

Output signal

4–20 mA

Load

500 Ohms at 24 V DC

Response time in liquids

(63 % temperature change)

5 seconds

Linearity error

max. ± 0.1 % FS

Temperature drift

0.01 % FS/hC

Temperature at the transmitter head

–10 . . . 70 hC

Connection diagram

Materials

Sensor: 1.4571

Housing: 1.4301

Immersion tubes

for type PZ 7 see page 5.

Fixing flange R 187

for air duct probe PZ 177–. . . see page 5

171 177

The temperature transmitters consist completely of stainless steel. The transmitter module is

housed for easy access in the housing head and can also be replaced as required. A Pt 00,

Class B to DIN IEC 75 is used as sensor.

Type overview

Immersion depth L (mm) max. perm. pressure Screw-in(bar) thread G 1/2

100 40 PZ 171-100/. . .150 40 PZ 171-150/. . .200 35 PZ 171-200/. . .250 35 PZ 171-250/. . .

The pressure data apply up to a temperature of 250 hC

Immersion depth L (mm) Air duct* probe

100 PZ 177-100/. . .150 PZ 177-150/. . .200 PZ 177-200/. . .250 PZ 177-250/. . .

* Can be used only up to max. 200 hC

Dimensions

171 177

Tendering textTemperature transmitter complete in stainless steel with screw-in tread G 1/2 / union nut / air

duct probe immersion depth . . . mm, temperature range from . . . to . . . hC. Supply voltage

12–36 V DC, output signal 4–20 mA.

R 185–. . .

R 187

5

Typeseries

P 17

Temperature sensors Pt 00 / Pt 000in stainless steel version

The temperature sensors consist completely of stainless steel (tube: .457, terminal

housing: .430).Sensor element: Pt 00,Class B to DIN IEC75, three-wire connection, cable

entry Pg , degree of protection IP 65.

Temperature range –50 . . . 600 hC, for P 177: –50 . . . 220 hC.

Max. temperature at the connection head: 50 hC

Immersion probe with screw-in thread G 1/2, 8 mm l, –50 . . . 400 hC

max. perm. Type TypeImmersion depth L (mm) pressure (bar) Pt 000 Pt 00

100 40 P 271-100 P 171-100150 40 P 271-150 P 171-150200 35 P 271-200 P 171-200250 35 P 271-250 P 171-250

The pressure data apply up to a temperature of 250 hC, at temperatures up to 400 hC the

permissible pressure is reduced by 50 %.

Air duct probe 8 mm l, –50 . . . 220 hC

Type TypeImmersion depth L (mm) Pt 000 Pt 00

100 P 277-100 P 177-100150 P 277-150 P 177-150200 P 277-200 P 177-200250 P 277-250 P 177-250

Dimensions as for temperature transmitter of the same construction. See page 4.

Immersions tubes G1/2 (only for P 7 . . ., P 27 . . . and PZ 7 . . .)

Immersion depth (L) (mm) Type

100 R 85-100150 R 85-150200 R 85-200250 R 85-250

Fixing Flange

Fixing Flange R 187 for air duct probe, stainless steel 1.4571

6

Typeseries

AP

Programmable display,

with 2 limit value switches

Technical data

Input signals

Freely selectable by setting

jumpers (see type summary)

Housing front

48 x 96 mm (DIN)

Dimension display

For APT: hCFor APV: none

Display

3|-digit, LED 12.5 mm, red,

automatic “–”-sign

Display range

See type overview.

Other ranges can be set.

Decimal point

Programmable

Measuring rate

2.5 measurements/second

Keyboard

lockable with jumper

Programmable switching

outputs

2 changeover switches

Output relay switching

capacity

2 x 230 V, 5 A AC

Supply voltage

230 V, 50–60 Hz, 3 VA

Degree of protection (front)

IP 60. DIN 40.050

Working temperature

–0 to +50 hC

Type of connection

Lift terminals

Front cut-out

H x B: 44.5 x 90.5 mm

Installation depth

15 mm

Dimensions

Various routines for setting the following parameters are integrated in the digital display

which is controlled by microprocessor:

y Measuring range (starting and end point)

y Display range (starting and end point)

y Position of the decimal point

y 2 limit values (relays) and their hysteresis

y Drop-down or pull-in delay of the relays

y Enquiry of the minimum and maximum measured value

y Rounding up and down the last digit

y Average formation

y Serial port (RS 232)

All routines and parameters can be set by keys on the front. The switching status of the

relays is displayed by LEDs.

The setting is buffered. On interruption of the supply voltage the set parameters are retai-

ned.

A galvanically isolated supply voltage of 24 V DC (max. 30 mA) is available for supplying

transmitters.

Type summary

Type Input signal Display range Suitable for

(programmable) (programmable) sensor

APV 630 0–1 V DC Pressure and

0–0 V DC –999 to +999 temperature

0–20 mA DC transmitter

APT 650 Pt 00 / Pt 000 –150 hC . . . +199.9 hC Temperature

–200 hC . . . +800 hC sensors

Pt 00 / Pt 000Cutting

90 x 44 mm

7

MODUFLEX

Typeseries

FTS

Two-phase frost protectionwith limiter contact and integrated priority selection

FTS

Technical data

Supply voltage

24 V AC ± 20 % or

24–36 V DC

Output signal

0–10 V ± 1 mA (with falling temperature)

+ floating limiter contact

Power consumption

max. 1 W

Cable entry

2 x Pg 11 for output signal 0–10 V

Plug connection to DIN 43650

for limit value switch

Protective category

IP 65

Installation

With 2 size 4 mm screws directly on the

duct wall.

5 capillary tube holders, Type H 3, are

included in the supply.

Ambient temperature

12–50 hCCaution: at ambient temperatures below

10 hC, the unit reacts and signals

“Risk of frost”.

Tendering text

Two-phase frost protection with limiter

contact and integrated maximum selection

for surface monitoring of the air heater, with

self-monitoring sensor

Input signal: 0–10 V

Output signal: 0–10 V ± 1 mA

+ single-pole changeover switch.

Capillary tube length 3/6 m.

Wiring diagram (plug connector)

Switching capacity

8 A, 250 V AC

The frost protection generates with

falling temperature a constant out-

put signal of 0–10 V. If the tempera-

ture drops further, a limiter contact

(single-pole changeover contact)

is actuated.

If the output signal of the controller

(Y signal) is looped through the

frost protection, a maximum selec-

tion of the two signals takes place. If

the Y signal from the controller is

larger than the output signal of the

frost protection, the controller

determines the position of the hea-

ting valve (normal operation). If the

output signal of the frost protection

is larger than theYsignal of the con-

troller (risk of frost), then the frost

protection determines the position

of the heating valve as long a “Risk

of frost” is signaled by the sensor.

Once the risk of frost is removed,

the controller automatically takes

over control of the heating valve

again.

External priority selection is thus

not required. The sensor acting

over the entire length is self-moni-

toring, i. e. in the case of breakage

of damage of the capillary tube,

“Risk of frost” is signaled.

If the signal of the controller is not

looped through, then the FTS out-

puts the frost control signal.

Range of action Capillary tube Type

10 . . . 3 hC 6 m FTS 015

10 . . . 3 hC 3 m FTSB 015

Characteristic Block circuit diagram

Please refer to page 16 for frost protection

thermostats.

Connection diagram

Limiter Comparator

8

Mechanical thermostats

Fields of Application FEMA thermostats are suitable for regulating and monitoring temperatures in industrial pre-

mises, vessels, boiler plant, pipelines, air heating and conditioning systems. Many other

applications over and above these are conceivable owing to the variety of designs and the

extensive range of accessories.

Types TRM Room thermostats

TAM Capillary tube thermostats

TX Rod thermostats

FT Frost-protection thermostats

Sensor systems

Room- Capillary Rod Air duct Frost-

sensor tube sensor sensor sensor protection

TRM TAM TX + R 10 sensor

Operation of theTemperature Sensors(effect on switchingdifference)

The temperature sensors may be regarded as temperature-dependent pressure sensors.

As the temperature rises the pressure in the sensor system also increases. The change in

pressure is transmitted to the microswitch by a bellows system or a diaphragm. A

compression spring, the initial tension of which can be varied by means of the set-

point spindle, acts as the reacting force. The switching temperatures are adjustable in

this way. A distinction can be made between adsorption and tension systems according

to the mode of operation of the sensors.

In the case of adsorption systems (range up to 50 hC) largely linear scales are produced

and the switching difference is almost constant over the whole range of adjustment.

Tension systems (range 40–90 and 80–130 hC) are based on the interdependence of

temperature and pressure of a medium (vapour pressure diagram). The vapour pressure

curves are non-linear in shape, the result of which is a non-linear temperature scale.

The switching difference is variable and is determined by the switching temperature set in

each case.

The graph in the margin shows the typical dependence of the switching difference on the

range of adjustment in tension systems. The switching differences are as a rule larger in

the lower range of adjustment and smaller in the upper range of adjustment than the

specified values.

The mid-range switching difference is specified in the data sheets in each case.

A complete thermostat consists of a sensor system and switching unit. Sensors and swit-

ching units of different types can be combined with each other owing to the modular

system of construction which is adhered to throughout.

Sw

itchin

gdiffe

rence

Switching temperature

(Desired value)

9

The most important technical datafor thermostats

Normal version -version

. . . 200 . . . 700

Switch housing Aluminium diecast GD Al Si 12 Aluminium diecast GD Al Si 12

Switching function and

connection drawing

(applies only for version

with microswitch)

Floating change-over contact. Floating change-over contact.

With rising pressure switching over With rising pressure switching over

single-pole from 3–1 to 3–2 single-pole from 3–1 to 3–2

Switching capacity

(applies only for version

with microswitch)

8 A at 250 VAC 3 A at 250 VAC

5 A at 250 VAC inductive 2 A at 250 VAC inductive

8 A at 24 V DC 3 A at 24 V DC

0.3 A at 250 V DC 0.03 A at 250 V DC

Installaton position arbitrary, preferably vertical vertical

Degree of protection

(in vertical position)

IP 54 (on request IP 65 by ZF 351) IP 65

Ex degree of protection – EEx de IIC T6 tested

to EN 50014/50018/500/19 (CENELEC)

PTB approval – Ex-90.C. 1059

Electrical connection Plug connection to DIN 43650 Terminal connection

Cable entry Pg 11 Pg 11

Ambient temperature –15 to +70 hC –15 to +60 hC

Switching point Adjustable on the spindle. Adjustable on the spindle after the

terminal box lid is removed.

Switching difference Adjustable or not adjustable Not adjustable

(see type overview)

Medium temperature Max. 70 hC, briefly 85 hC Max. 60 hC

Vibration strength Up to 4 g no noteworthy deviations. The switching difference is reduced slightly at higher

accelerations. Use able 25 g not permissible.

Insulations values Overvoltage category III, contamination class 3, reference surge voltage 4000 V. The

conformity to DIN VDE 01 10 (01.89) is confirmed.

0

ThermostateSwitch units / connection diagrams

Plug connection

series 200

Description Connection diagrams

Normal version

microswitch, single pole changeover

ZFT 206 Minimum limiter

(for frost protection thermostates)

With manual lock for reconnection.

Interlocking with increasing temperature

ZFT 213 Gilded contacts with little transition

resistance (e. g. for low tension)

Cannot be supplied with adjustable

switching differential

ST 218 Plug connector with position indication

12 V – 240 V AC/DC

ZFT 351 Protection type IP 65 and switch housing with

surface protection

(terminal connection housing)

ZFT 513 EExi-version

Housing 300, cable entry and terminals

blue. Gold plated contacts,

Protection type IP 65

(terminal connection housing)

ZFT 5971 Setting and sealing according to specification

Example for ordering:

TX 150–513

Code for additional function (Minimum limiter)

Code of temperature range

Type

Temperature monitoring inexplosion-endangered areas

Temperature switches with special equipment can also be used in the

Ex area ≥ Zone 1.

The following alternatives are possible:

1. Thermostat with pressure-proof encapsulated switchingdevice, degree of protection EEx de IIC T6The thermostat in pressure-proof encapsulation can be used directly in the Ex area

≥ Zone 1). Maximum switching voltage, switching capacity and ambient temperature

must be taken into account and the rules for the installation in the Ex area must be obser-

ved.

All thermostats can be equipped with Ex switching mechanisms. Nevertheless, special

circuits as well as versions with adjustable switching differences are not possible.

2. Thermostats in EExi versionAll thermostats in normal version can be used in the Ex area ≥ Zone 1 if they are incorpo-

rated in an “intrinsically safe circuit”. In principle the intrinsic safety is based on that fact

that the control circuit run in the Ex area carries onlya small amount of energywhich is not

able to generate ignitable sparks.

Isolating switching amplifiers, e. g. Type EX 01 must be tested by the PTB and approved

for Ex-installations.

Isolating switching amplifiers must in any event be installed outside the Ex zone.

Thermostats which are intended for EEx-ia installations can be equipped with blue termi-

nals and cable entries.Because of the low voltages and currents which are carried by the

contacts of the microswitch, gold plated contacts are recommended (additional function

ZF 513).

1

ThermostatsGeneral technical information

Adjustment of the thermostats Adjustment to the lower switching point

The desired value xs corresponds to the lower switching point (on falling temperature), the

upper switching point xo (on rising temperature) is higher by the switching difference xd.

Setting the switchingtemperature(Desired value setting)

The grub screw located above the scale is to be slackened off approx. 2 turns before making

an adjustment and tightened up again after setting.

The switching temperature is set by the spindle. The set switching temperature can be read

off on the scale.

Slight variations between the set value and the switching point are inevitable due to toleran-

ces and spreads in the characteristics of the sensors and springs, also to friction in the

moving parts of the switch.The thermostats are as a rule set in such a way the desired value

setting and the actual switching temperature coincide best in the middle range. Any possi-

ble divergences are uniformly distributed to either side.

Turning to right: Low switching temperature

Turning to left: High switching temperature

Changing theswitching difference(only on switching units TRMV . . .)

The switching difference is changed by turning the threaded rod inside the setting spindle.

The lower switching point is not changed by adjusting the difference, only the upper

switching point is shifted by the amount of the difference. One revolution of the difference

screw varies the switching difference by approximately [ of the total differential range.

Bear in mind when making the adjustment:

Switching temperature:

Turning to the right – lower switching point. Turning to the left – higher switching point.

Switching difference:

Turning to the right – larger difference. Turning to the left – smaller difference.

Electrical connection Plug connection according DIN 43 650. Cable entry Pg 11. Max. cable diameter: 10 mm.

Cable outlet possible in 4 directions – spaced 90h apart.

Connection diagrams see page 0.

Switching

temperature

Switching

difference

2

ThermostatsGeneral technical information

Temperature limiter

with manual reconnection block

(Frost protection thermostats)

The frost protection thermostats can be made with mechanical latching.When the value set

on the scale is reached, the microswitch changes over and stays in this position. The blok-

king device can be released again by pressing the unlatching button (identified by a red dot

on the scale side of the switching unit).According to the type, the latch mayoperate when the

value rises orwhen the value falls.Unlatching can take place onlywhen the temperature has

been lowered or, in the case of latching at the lower switching point, raised again by a certain

amount.

Caution: Press unlatching button before putting into operation.

Connection diagrams see ZFT 206 (page 0).

Sealing the setting spindle The setting spindles for desired value and switching difference can be covered and sealed

with the sealing parts which are available accessories (type designation P2) consisting of a

sealing plate and cross-head screw.

The sealing parts can also be fitted later.The varnished adjusting screws are also covered by

them.

Repetitive accuracy Extensive testing on our premises and endurance tests by authorised testing bodies have

shown that the repetitive accuracy of the FEMA thermostats lies within the limits of ± 5 % of

the smalles switching differential specified in the lists over a working period of approx.

100.000 switching cycles, provided, of course, that the units are not stressed beyond the

maximum permissible temperatures at any time. The repetitive accuracy is independent of

the desired value set at any one time.

Mounting position Preference is to be given, if possible, to the vertical mounting position.

Type of protection IP 54 is guaranteed in accordance with the conditions of

DIN 40 050 for vertical mounting. The type of protection may be changed by a different

mounting position.

Installation of thethermostat in the open

The FEMA thermostats can also be installed in the open, if they are mounted in a vertical

position.

On temperatures below 0 hC please take care that there can form no condensation at the

sensor and inside the switching unit.

3

Typeseries

TR

Room Thermostatsfor industrial premises

Technical data

(not for Ex-versions)

Casing

Die-cast metal GD AI Si 12 to DIN 1725.

Resistant to ammonian steam and

seawater.

Mounting Position

Optional.

Max. Ambient temperature

70 hC60 hC on Ex-versions.

Max. Temperature at the sensor

70 hC

Contact complement

Single-pole changeover.

Switching capacity

8 (5) A 250 V AC.

Type of protection

IP 54 to DIN 40 050

(in the case of vertical mounting).

Installation

With H 1 support bracket or with

2 screws (l 4) bulk-head

mounting.

Adjustment

Scale value corresponds with the lower

switching point (with falling temperature),

the upper switching point is higher by the

switching differential.

Plug connection

By means of obliquely angled plug to DIN

43 650 (3-pole +earth contact), cable entry

Pg 11, max. cable diameter 10 mm. Cable

outlet possible in 4 directions – spaced

90h apart.


Adjustable from outside with screw-driver.

Switching difference

Not adjustable on TRM, adjustable on

TRMV.

For values see summary of types.

Dimensions

FEMA room thermostats are suitable for industrial plant, for greenhouses, cowsheds and

warehouses, also for monitoring the maximum temperature in switchgear cabinets and relay

stations.

Room thermostats are supplied complete with H 1 wall bracket.

Type Range of Switching differenceadjustment (mean value)

Switching difference not adjustable

TRM 022 –20 bis +20 hC 1.0 K

TRM 40 0 bis +40 hC 1.0 K

TRM 150 +10 bis +50 hC 1.0 K

Switching difference adjustable

TRMV 40 0 bis +40 hC 3–10 K

TRMV 150 +10 bis +50 hC 3–10 K

Ex-proof · Design EEx de IIC T6(technical data see page 10)

Type Range of adjustment Switching difference Max. permissible(mean value) temperature on sensor

Switching difference not adjustable

Ex-TRM 022 –20/+20 hC 1.0 K 70 hCEx-TRM 40 0/+40 hC 1.0 K 70 hCEx-TRM 150 +10/+50 hC 1.0 K 70 hC

Tendering Text

Room thermostat for industrial premises, Type TRM,

range of adjustment . . . to . . . hC.

Switching difference not adjustable/adjustable.

Die-cast metal with plug connection to DIN 43 650.

4

Typeseries

TX

Rod ThermostatsDepth of immersion: 135 and 220 mm

Technical data(not for Ex-versions)

Casing

Die-cast metal GD Al Si 12 to

DIN 1725.

Mounting position

Optional.

Max. ambient temperature at the

switching unit

70 hC.

60 hC on Ex-versions.

Max. permissible temperature at the

sensor

See summary of types.

Contact Complement


Switching capacity

8 (5) A 250 V AC.

Type of protection

IP 54 to DIN 40 050


Adjustment





Plug connection

By means of obliquely angled plug to DIN

43 650 (3-pole +earth contact), cable entry

Pg 11, max. cable diameter 10 mm, cable

outlet possible in 4 directions – spaced

90h apart.

Plug is included.


Adjustable from outside with screw-driver.


Not adjustable, for values see summary of

types.

Accessories

Immersion tubes

see page 17.

Dimensions

Rod thermostats can be installed as immersion thermostats in pipelines and containers and

for monitoring temperature in air ducts. The suitable immersion tube has to be chosen

according to the application.

Type Range of Switching difference Max. permissibleadjustment (mean value) temperature

at sensor

Depth of immersion 135 mm

TX 023 –20 bis + 30 hC 1.5 K 110 hCTX 150 +10 bis + 50 hC 1.5 K 110 hCTX 490 +40 bis + 90 hC 2.5 K 125 hCTX 813 +80 bis +130 hC 4.0 K 150 hC

Depht of immersion 220 mm

TXB 023 –20 bis + 30 hC 1.5 K 110 hCTXB 150 +10 bis + 50 hC 1.5 K 110 hCTXB 490 +40 bis + 90 hC 2.5 K 125 hCTXB 813 +80 bis +130 hC 4.0 K 150 hC

Ex-Proof · Design EEx de IIC T6(technical data see page 10)


at sensor

Immersion depth 135 mm

Ex-TX 023 –20 bis + 30 hC 1.5 K 110 hCEx-TX 150 +10 bis + 50 hC 1.5 K 110 hCEx-TX 490 +40 bis + 90 hC 2.5 K 125 hC

Immersion depth 220 mm

Ex-TXB 023 –20 bis + 30 hC 1.5 K 110 hCEx-TXB 150 +10 bis + 50 hC 1.5 K 110 hCEx-TXB 490 +40 bis + 90 hC 2.5 K 125 hC

Tendering Text

Rod thermostat, Type TX . . . , range of adjustment . . . to . . . hC dept of immersion 135 mm /

220 mm, die-cast metal with plug connection to DIN 43 650.

Accessories

Immersion tube, type . . .

5

Typeseries

TA

Capillary tube thermostatswith 1.5 m capillary tube


Casing

Die-cast metal GD Al Si 12 to DIN 1725.

Mounting position

Optional.

Max. ambient temperature at the

switching unit

70 hC.


Capillary tube

Cu capillary tube, 1.5 m long.

Sensor cartridge

8 mm l, 100 mm long, material: Cu.

Contact complement


Switching capacity

8 (5) A 250 V AC.

Type of protection

IP 54 to DIN 40 050


Installation

Temperature sensor with or without immer-

sion tube in vessels, air ducts, etc.

Switching unit with 2 srews (l 4) bulkhead

mounting.

Adjustment





Plug connection

3-pole + earth conductor, accessible after

removing terminal box cover.

Cable entry Pg 11, max. cable diameter

10 mm.


Adjustable by means of screwdriver on set-

ting spindle (accessible after removing ter-

minal box cover).


Not adjustable.

Immersion tubes see page 17

Dimensions

The sensor cartridge at the end of the capillary tube is the actual active (temperature-sensi-

tive) part of the sensor. Changes in temperature on the capillary tube have no effect on the

switching point.

Pressuretight installation of the sensor in pressure vessels of all kinds is possible with the aid

of immersion tubes.


at sensor

TAM 022 –20 bis + 20 hC 1.5 K 110 hCTAM 150 +10 bis + 50 hC 1.5 K 110 hCTAM 490 +40 bis + 90 hC 2.0 K 125 hCTAM 813 +80 bis +130 hC 2.0 K 150 hC

Ex-proof · Design EEx de IIC T6(technical data see page 10)


at sensor

Ex-TAM 022 –20 bis + 20 hC 1.5 K 110 hCEx-TAM 150 +10 bis + 50 hC 1.5 K 110 hCEx-TAM 490 +40 bis + 90 hC 2.0 K 125 hCEx-TAM 813 +80 bis +130 hC 2.0 K 150 hC

Tendering Text

Capillary tube thermostat, Type TAM . . .

Range of adjustment . . . to hCLength of capillary tube 1.5 m, die-cast metal with plug connection to DIN 43 650.

Accessories

Immersion tube type . . .

See also page 18 for further accessories (Wall bracket H 2, Capillary tube bushing R 4

and R 5).

6

Typeseries

FT

Frost protection thermostatsfor air heating and conditioning systems


Casing

Die-cast metal GD Al Si 12 to

DIN 1725.

Sensor

Cu capillary tube

Max. ambient temperature

at the switching unit

70 hC.


Contact complement


Switching capacity

8 (5) A 250 V AC.

Type of protection

IP 54 to DIN 40 050



Permanently set in the factory to approx.4 K.

Adjustment





Plug connection

Obliquely angled plug, 3-pole with earth

contact to DIN 43 650

Cable entry Pg 11.

Max. cable diameter 10 mm.

Cable outlet possible in 4 directions-

spaced 90h apart.

Plug is included.

Dimensions

Accessories

5 capillary tube holders (included in

delivery).

See also page 18 (capillary tube bushings

R 4 and R 5).

FEMA frost protection thermostats reliably monitor the temperature in hot water-heated air

heaters. If the temperature falls below the set value, the thermostat switches off. A visual or

audible “frost hazar” alarm can be switched on at the same time. A fixed stop on the setting

spindle at 3 hC prevents the thermostat from being set below the freezing point due to inex-

pert adjustment.

If the capillary tube is damaged or broken, the FEMA frost protection thermostats reliably

switch off towards the safe side (e. g. fan off) irrespective of the temperature at the sensor.

Mode of operationThe FT types with 3 m or 6 m capillary tube detect the temperature over the whole length of

the capillary tube and are therefore used to monitor the surface of the whole air heater. If the

capillary tube is undercooled at any point, the thermostat switches off.

The frost protection thermostats with reclose prevention (switching units 206) break

the circuit at the set value as the temperature falls. The switching state adopted is mechani-

cally latched against automatically switching on again. The latch can only be released again

by actuating the unlatching button after the temperature has risen again by approx. 8 hC.

Note:In the case of the FT types care is to be taken to ensure that the ambient temperature at the

switching unit does not fall below the set switching point. Also, parts of the capillary tube out-

side the air heater are not to be laid in areas the temperature of which can fall below the set

switching point. Both can lead to premature switch-off.

Standard Type Type with reclose Range of Max. Versionprevention adjustment temperature

at sensor

FT 015 FT 015-206 4–15 hC 200 hC 6 m capillary tube

FTB 015 FTB 015-206 4–15 hC 200 hC 3 m capillary tube

Ex-Proof · Design EEx de IIC T6(technical data see page 10)

Type Range of Max. Versionadjustment temperature

at sensor

Ex-FT 015 4–15 hC 130 hC 6 m capillary tube

Ex-FTB 015 4–15 hC 130 hC 3 m capillary tube

Two-phase frost protection control with output signal 0–10 V and limit

switch. See separate data sheet, FTS, page 7.

Tendering Text

Frost protection thermostat, Type . . . with 3 m/6 m capillary tube. Range of adjustment

3–15 hC with/without internal reclose prevention, die-cast metal housing with plug-connec-

tion to DIN 43 650.

7

AccessoriesImmersion tubesfor thermostats and temperature transmitter

Type Depth of immersion Overall length Suitable for

L (mm) L2 (mm)

Nickel-plated brass type, G 1/2, max. permissible pressure: 25 bar

R 1 / Ms 135 151

R 2 / Ms 220 236 TAM . . .

R 3 / Ms 500 516

R 10 / Ms 135 151TX . . . /TP

R 20 / Ms 220 236

Stainless steel type (1.4571 + 1.4401) G 1/2, max. permissible pressure: 63 bar

R 1 / Nst 135 151

R 2 / Nst 220 236 TAM . . .

R 10 / Nst 135 151TX . . . /TP

R 20 / Nst 220 236

Nickel-plated brass type, 1/2 NPT, max. permissible pressure: 25 bar

RN 1 / Ms 135 151

RN 2 / Ms 220 236 TAM . . .

RN 10 / Ms 135 151TX . . . /TP

RN 20 / Ms 220 236

Stainless steel type (1.4571 + 1.4401) 1/2 NPT, max. permissible pressure: 63 bar

RN 1 / Nst 135 151

RN 2 / Nst 220 236 TAM . . .

RN 10 / Nst 135 151TX . . . /TP

RN 20 / Nst 220 236

Immersion tubes with fixing flange for air ductsmaterial: steel, chromated

R 6 Depth of immersion 135 mmTX . . .

R 7 Depth of immersion 220 mm

Fastening flange for Pt 100-/Pt 1000 sensor, l = 5 mm

Type R 8 TP, PF, PS

Use of the immersion tubes

for pressure prooffor air ducts

for

installation (up to 100 bar) exhaust

pipesR 1 R 2 R 10 R 20

RN 1 RN 2 R 3 RN 10 RN 20 R 6 R 7 R 8 R 15 R 18

TAM . . . x x x

TX . . . x x

TXB . . . x x

Temperature xTransmitter

TP . . . x xSensors

PF . . ., PS . . .

only

together

with re-

taining

spring

FF 135

Transmitter

PZ 17

Sensors

P 17 x

Immersion tubes G 1/2, internal l 8 mm

Immersion tubes 1/2 NPT,

internal l 8 mm

R 6 R 7

R 8 R 8 (example for mounting)

8

AccessoriesAccessoriesfor thermostats

Wall bracket Type H 1

including fixing screws and plugs (6 mm l).

included as standard with Type TRM thermostats. Suitable for all switching units.

Wall bracket Type H 2

for fixing the sensor cartridges of capillary tube thermostats. Suitable for all Type TAM

capillary tube thermostats.

Capillary tube holder Type H 3

to attach the capillary tube of frost protection thermostats to the frame of the air heater

(5 off packed in bag).

Suitable for FT frost protection thermostats and frost protection FTS.

Sealing, type P 2

consisting of cover plate and screw for covering and sealing the adjustment screws.

Heat conducting compound Type WLP 1

to improve the transfer of heat, e. g. in the case of contact thermostats.

Approx. 0.5 cm3 in handy dispenser.

Capillary tube bushing, type R 4

with 3 mm capillary tube screw in thread G 1/2HH suitable for all types TAM, FT and FTS.

Capillary tube bushing, type R 5

Rubber plug for 3 mm capillary tube, bore diameter 0 mm.Not pressure-tight (5 pcs. packed

in bag). Suitable for all TAM, FT and FTS.

Plug ST 5 to DIN 43050

for switching units of series 200, with seal and fastening screw, 3-pole + earth contact.

Plug ST 3 to DIN 43050

(replacement for large plug of frost protection thermostats).

Plug connectors with position indication ST 218

Operating voltage: 12–240 V AC/DC

Operating current: max. 2 A

LED current drain: max. 10 mA

LED indication: green if voltage present at contact

pin 1

red if voltage present at contact

pin 2

Connection rotatable 270h engaging at increments of 45hType of protection: IP 65

Ambient temperature: 0–60 hCSuitable for pressure and temperature switches with plug connection

(series 200) with are equipped with a mikro switch (standard version).

19

Technical dataHousingAluminium diecastingwith plastic cover

Immersion tube(included in supply): brassScrew-in thread: G ½Immersion depth: see type overview

Stainless steel immersion tubeoptional, see table below

Max. ambient temperature80 °C at the switching head

Switching point accuracy(in upper third of scale)for TW, STW, STB: � 5 %for TR: � 1.5 %(in % of scale range)

Switching difference(in % of scale range)for TR, TW: 3–4 %for STW, STB: 4–6 %

Lead sealThe cover of the switch can be leadsealed so that the internal settings ofthe limiter switching points are no longeraccessible after sealing.

Switching capacity10 (2) A, 250 V AC

Type of protectionIP 54

The temperature monitors and temperature limiters correspond to the requirements ofDIN 3440 and can thus be used for heating systems according to DIN 4751, for steamand hot water systems and for district heating systems. The devices with safetyfunction (STW, STB) are self-monitoring, i.e. in the case of breakage or leaks in themeasuring system the circuit is opened and the system is switched off to the safe side.

TW, STW, TR STB

Type STW 1F STW + TRF STB + TWF STB + TRF STB 1F TWP 1F

Function Safetytemperature

monitor

Safetytemperaturemonitor and

controller

Safetytemperaturelimiter and

monitor

Safetytemperaturelimiter andcontroller

Safetytemperature

limiter

Temperaturemonitor

Setting range 20–150 °C 20–150 °C 30–110 °C 30–110 °C 60–130 °C 20–150 °C

TÜV-test certificate STW (STB)89496S

TR / STW (STB)89996S

TW / STB90496

TR / STB90096

STB89596

TW89296

Setting internal STW internalTR external

STB internalTW external

STB internalTR external

internal internal

Controls accessiblefrom outside

none Setting wheelfor TR

Reclosingbutton

Reclosingbutton and

setting wheelfor TR

Reclosingbutton

none

Contact Changeover 2 x changeover NC (STB) andchangeover

(TW)

NC (STB) andchangeover

(TR)

NC Changeover

Reclosing lockout(internal)

no no yes yes yes no

Max. temperatureat the probe

175 °C 175 °C 130 °C 130 °C 150 °C 175 °C

Immersion depth 150 mm 150 mm 150 mm 150 mm 150 mm 100 mm

Stainless steelimmersion tube

T4 NST F T5 NST F T5 NST F T5 NST F T4 NST F T4 NST F

Typeseries

STBTemperature monitors, temperature limitersComponent tested according to DIN 3440

STB + TWF

STB 1F

Connection diagrams:In devices with doublefunction there are2 switching elements.Observe the function ofthe relevant switch onconnection.

Fema Controls · Honeywell AGP. O. box 1254 · 71099 Schönaich/GermanyPhone ++49(0)7031/637-828 · Fax ++49(0)7031/[email protected] · www.honeywell.de/femaTechnical data and pictures not obligatory

for delivery. Subject to change.

EN3B-0259GE51 R0700 Printed in Germany

H

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Monitoring and control of pressure, temperature and flow

14103_TTS62/4_GB_2000_Temp 06.11.2000 9:08 Uhr Seite 1

Documents

Temperature measuring and monitoring · (current feed and high-ohmic voltage interrogation).The measuring result is not falsified.The lines can have different resistances. Disadvantage: