Wika Press Chiller

7/27/2019 Wika Press Chiller

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Universal PressureTransmitter

UniTrans

Operating Manual


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S-Nr.2184125


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Universal Transmitter UniTransContents

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Subject to change due to technical modifications. Copyright WIKA Instrument Corporation

WIKA Instrument Corp. 1000 Wiegand Blvd. Lawrenceville, GA 30043

(80 ) 645 - 0606 Fax (770) 277 - 2641 E-mail: [email protected] http://www.wika.com 1

Contents

1 General Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2 Product Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32.1 Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1.1 Pressure Transducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32.1.2 Control Interface Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1.3 Display Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42.2 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.2.1 Functions of Devices without Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.2.2 Functions of Devices with Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.3 Installation Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.1 Input-values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.2 Output-values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.3 Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.4 Auxiliary Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93.5 Ambient Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.6 Process Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.7 Identification Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114.1 Pressure Transmitter Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.2 Display Unit Upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.3 Housing Reconfiguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124.4 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.5 Pressure Compensation when using a Relative Pressure Sensor . . . . . . . . . . . . 14

5 Operation of Devices without Displays . . . . . . . . . . . . . . . . . . . . . . .155.1 Preparation for Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155.2 Key Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.3 Calibration with Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.3.1 Zero Point Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165.3.2 Span Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.4 Calibration without Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175.4.1 Zero Point Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.4.2 Span Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185.5 Integration Time (Dampening) Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.6 Reset to Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19


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(80 ) 64 - 0606 Fax (770) 277 - 2641 E-mail: [email protected] http://www.wika.com2

6 Operation of Devices with Displays . . . . . . . . . . . . . . . . . . . . . . . . . . 206.1 The Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .206.2 Key Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

6.3 The Programming Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.4 Default Data (factory setting) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226.5 Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

6.5.1 Main Menu: Display (changing measured value units, changing line 2 and line 3) 246.5.2 Main Menu: Calibration of zero and span (with / without pressure) . . . . . . . . . . . .26

6.5.3 Main Menu: Output (Integration time, Inversion, Alarm, Limits, Current offset) . . .296.5.4 Main Menu: Evaluation (Reference table, Linear activation, Media density) . . . . . 33

6.5.5 Main Menu: Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

6.5.6 Main Menu: Service (Mounting Correction, Loop Test, Timer, Reset, Password) .37

7 Diagnostics and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

8 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

9 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 429.1 Dimension Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

9.2 Warranty Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .439.3 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

9.4 Units of Pressure Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

1 General Safety Instructions

Observe the national safety and accident prevention regulations, as well as

the following safety instructions in this operating manual when working with

the hydrostatic pressure transducer.

Any operation not described in the following instructions should not be

used.

If a fault cannot be corrected, the device should be removed from operation

and stored to prevent its reinstallation.

Repairs should only be performed by the manufacturer. All other repairs or

device modifications are unauthorized.

Other important safety guidelines are located in the individual sections of

this instruction manual.

W a r n i n g

W a r n i n g

A t t e n t i o n

A t t e n t i o n


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2 Product Description

The UniTrans pressure transmitter (also called a pressure transducer) can be used

for level control and pressure measurement in process applications. A variety of pro-

cess connections, measurement ranges, electrical interfaces and display optionsenable a wide range of applications.

2.1 Construction

The UniTrans consists of a pressure sensor, a control interface unit and a housing

cover with optional display. Different modular configurations are available allowing a

variety of designs.

2.1.1 Pressure Transducer

The pressure transducer has a piezo-resistive or thin film measurement cell depend-

ing on the pressure range. The sensor is temperature compensated, with a fully

welded stainless steel construction which is helium leak tested. Pressure transducers

do not have internal seals, which allow for a wider range of media compatibility.

For corrosive or highly viscous medias, different materials and process connections

(including chemical seals) are available for the wetted parts, please consult the fac-tory.

2.1.2 Control Interface Unit

The control interface unit contains the terminal compartment and the keypad used to

program the device. The four keys must be active (unlocked) before use. The keypad

is locked during normal operation to protect data and functions previously entered.

The keypad automatically locks if not being used for 10 minutes. The control interface

Direct Mounted


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converts the sensors digital signal into a standard 4-20 mA current signal.

2.1.3 Display Unit

The measured-value indicator has four digits (in a 7-segment display) and symbols.

Below it, is line 1 (16-segment display) used to display error codes and the units ofmeasure. The unit of measure can be selected by the operator.

Additional information is displayed in lines 2 and 3 (16-segment display). The operator

can enter commands in the programming mode on the display unit by means of menu

driven prompts.

The UniTrans with a display offers a higher number of programming and control inter-

face options. These options include alarm status, dampening, signal inversion, tank

linearization and diagnostic messages.

Display units can be easily upgraded (see Section 4.2).

CALIBRATION

RANGE


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2.2 Function

The mode of operation for signal conversion is the same for all versions. The pressure

transducer converts the existing pressure into an electrical signal. Microelectronics

further process the input signal and produce a proportional 4-20 mA standard signal.

The display-version allows programming (parameterization) and the display of ex-

panded functions such as inversion, dampening, alarm status and linearization.

2.2.1 Functions of Devices without Displays

Calibration of zero and span with pressure (see 5.3)

Calibration of zero and span without pressure (dry adjustment) (see 5.4)

Setting the dampening / integrating the output signal 0-40 s (see 5.5)

Reset to manufacturers default values (see 5.6)

2.2.2 Functions of Devices with Displays

Optional units of measure for measured-values (mbar, bar, psi, mA, m, mm WS

(see 6.5.1)

Temperature and Min/Max values shown in display (see 6.5.1

Nominal pressure range of the sensor shown in display (see 6.5.1)

Zero and span calibration (with/without pressure) (see 6.5.2)

Dampening setting / integration of output signal 0-40 s (see 6.5.3)

Inversion of the output current signal (see 6.5.3

Alarm output current value setting (3.6 mA or 21 mA) (see 6.5.3)

Setting the limits of the output signal (see 6.5.3)

Offset of the output signal (see 6.5.3)

Entry of a table function for the linearization of the output signal (see 6.5.4)

Entry of medium consistency (see 6.5.4)

Selecting the language of the display (see 6.5.5)

Mounting correction of the sensor (see 6.5.6)

Measuring circuit test function (see 6.5.6)

Reset functions (see 6.5.6)

Password activation (see 6.5.6)


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2.3 Installation Examples

The UniTrans is primarily used to detect the hydrostatic pressure of liquids in tanks.

The measured pressure is provided as a height proportion or level control signal. The

pressure is measured using absolute (against a vacuum) or relative (against external

or air pressure) measurement depending on the type of sensor selected.

The UniTrans is also used for process pressure measurement within pipes and con-

tainers.

Level Control: Level Control:

Externally mounted Combined pressure and head pressure

(with flush diaphragm) are measured by two externally mounted

pressure transducers. The two signals

are analyzed and the differential is cal-

culated by a PLC or suitable signal con-

verter.

Process Pressure Measurement: Process Pressure Measurement: Used to measure pressure of liquids Used to measure container pressure.

or gases in pipelines.

007-DS-D 008-DS-D


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Process Pressure Measurement: Process Pressure Measurement:

Installed behind feed pumps for Installed in front of and behind the filter.

process control or monitoring pump Uses the pressure differential for moni-

functions. toring the function or accumulation of dirt

in the filter. Both output signals are pro-

cessed by a PLC or signal converter.


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Universal Transmitter UniTransTechnical Data




3 Technical Data

3.1 Input-values

3.2 Output-values

Pressure Range(Absolute pressure upon request,

please contact factory)

0 - 5 PSIG0 - 25 PSIG

0 - 100 PSIG

0 - 250 PSIG

0 - 500 PSIG

0 - 1500 PSIG

0 - 3000 PSIG

0 - 7500 PSIG

0 - 15,000 PSIG

others - 15,000 PSIG

Output signal 4 - 20 mA

Accuracy (linearity, including hyster-

esis, repeatability) [% of Span]

< 0.10 at ranges of > 600 PSI

< 0.15 at ranges of < 600 PSI

Turn down effect on accuracy:

- turn down up to 1 : 5

- turn down 1 : 6 to 1 : 20

no change to accuracy

accuracy X (turn down / 5)for example if turndown is 1 : 15, then accuracy =0.10X(15/5) = 0.3%

Load RA < (UB12 V)/23 mA

Fault signal 3.6 mA or 21 mA, programmable

Integration time/Damping time 0 s, 1 s, 5 s, 20 s, 40 s, programmable

Adjustment of the span 1 : 20

Integrated lightning protection optional

Zero point adjustment 0 - 99 %


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3.3 Construction

3.4 Auxiliary Power

3.5 Ambient Conditions

Process connections:

Type UT-10

Type UT-11

1/2 NPT

G 1B diaphragm with O-Ring

(Ranges: 0 - 25 PSI and

below

G 1/2 B diaphragm with O-Ring

(Ranges:

0 - 100 PSI to 0 - 7500 PSI)

G 1 1/2 B diaphragm with O-Ring

(Ranges: 0 - 25 PSI and

below

Materials:Housings

(UT-10)

(UT-11)

Internal transmission fluid

durable, fiberglass plastic (PBT)

CrNi-steel 1.4571 and 1.4542

CrNi-steel 1.4571{Hastelloy C4} and

O-Ring: NBR {Viton or EPDM}

Silicon Oil {Halocarbon oil for oxygen

applications}; {vegetable oil}

Electrical connection and protection

method per EN 60 529/ IEC529

M 20 x 1.5 cable gland with internal ter-

minal block (see 4.4)

Electronic protection methods Reverse polarity, overload and short cir-

cuit protection

Power supply 12 - 36 V DC

Ambient temperature -40 F to +185 F (-40 C to +85 C)

(-4 F to +158 F with display)

Storage temperature -40 F to +185 F (-40 C to +85 C)

(-31 F to +176 F with display)

Climate class D per DIN IEC 654-1

Protection method per EN 60 529 IP 65 (IP 67 upon request

EMC per EN 50 081-2, EN 50 082-2,

NAMUR NE 21


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3.6 Process Conditions

3.7 Identification Plates

Media temperatures -22 F to +221 F (-30 C to +105 C)

Max. wash-down temperatures 248 F (120 C)

The device should not be subjected to the wash-down temperature for

more than 10 minutes at a time! A maximum wash-down temperature of

221 F (105 C)is allowed for devices installed in hazardous areas.A t t e n t i o n

:Signal / Signal / Signal de sortie

:Hilfsenergie / Power supply / Alimentation

S # :Serien-Nr. / Fabrik-Nr. / Serial No. / N Srie

P # :Erzeugnis-Nr. / Product No. / Code Article

Alexander Wiegand GmbH & Co. . D-63911 Klingenberg 9E

0 ... 40 bar 0,15 %

4 ... 20 mA 1+ 2-

DC 12 ... 36 V

P # 0639080

S # 0639110Code UT-10-A-BBM-GD-ZMIAAZZ-Z

Transmitter UT-10

TRONIC LINE

Anschlsse/terminals /bornes


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4 Installation

The device should be installed/operated in accordance with applicable national and

local safety regulations, this operating manual and generally recognized industrystandards.

4.1 Pressure Transmitter Installation

Installation Using Welding Support:

Insert a filler piece (a pressure transmitter dummy) into the welding support (P-1adaptor is available from the factory).

Weld the support into the container/pipe wall (section-weld process).

Remove the filler piece.

Install the pressure transmitter in the welding support.

4.2 Display Unit Upgrades

The display unit can be easily upgraded at any time.

Remove the housing cover and the support cable.

Attach the display units support cable to the same site.

Plug the display units connector into the appropriate jack.

The display unit can be mounted at 90 angles.

Fasten the display unit with screws.

The pressure transmitters diaphragm should not come into contact with

hard or sharp objects.

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All functions are programmable when the pressure transmitter has been upgraded

with a display unit. The adjusted parameters are stored after the display unit is re-

moved.

The display unit can be rotated about 300, so that it can be read under various instal-

lation conditions. The housing cover with built-in display can be fastened to the hous-

ing at all four side positions.

4.3 Housing Reconfiguration

Rotate the housing of the display unit in order to be able to read the display from

above when the pressure transmitter is installed in an upright position.

Loosen the 4 internal hexagonal screws.

Lightly lift off the housing with the display unit.

Carefully turn the housing 180.

Re-tighten the screws.


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4.4 Electrical Connection

The supply voltage is between 12 and 36 V DC (12 and 30 V for intrinsic safety de-

vices). The power supply and the output signal are conducted across a two-wire cable

(max. 12 mm outer diameter, max. 14 AWG) and connected in accordance with the

pin configuration.

Auxiliary power can be supplied by a power unit, a transmitter power supply or by

means of a PLC connection.

It is suggested to use a design with integrated lightning protection to prevent damage

due to voltage spikes.

Please observe local installation regulations.

The terminal voltage should not exceed 36 V (30 V for intrinsic safety

devices).A t t e n t i o n


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Terminal Configuration

Ground

L- Negative

L+ Positive

I Test circuit; connect the ampere meter between terminals L+ and I

The unit must be properly grounded in order to guarantee EMC resistance.

4.5 Pressure Compensation when using a Relative Pressure Sensor

A Gortex diaphragm is used to compensate for atmospheric pressure under the

IP 65 Protection Method.A special cable with a vent tube is used to compensate for atmospheric under the

IP 67 Protection Method.


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5 Operation of Devices without Displays

5.1 Preparation for Programming

This unit can be programmed before or after installation.

Connect an ammeter to the devices output (between terminals I and L+).

Note that after each action, a brief oscillation/deflection of 20 mA occurs (verifica-

tion of a successful action).

The following device functions can be programmed without a display unit:

Zero point adjustment with a full or empty container (with/without pressure)

Span adjustment with a full or empty container (with/without pressure)

Integration/dampening time

Reset to manufacturers defaults

5.2 Key Functions

If the zero point or span setting are adjusted under pressure to a value out-

side of the sensors nominal pressure range, an error signal occurs. This

error signal is caused by a current surge of 3.6 mA or 21mA that lasts for 5

seconds or more. No values are stored when an error signal occurs.

The keypad becomes inactive if not used for 10 minutes. All settings will

default to previously stored values. Only settings that have been confirmed

with the "OK" function are stored.

Function 1 Function 2

When keypad is

active, enters span

adjustment mode

Action: upward,

increase value

When keypad is

active, enters zero

adjustment mode

Action: downward,

decrease value

Exit key or pro-

gramming mode

Activate keypad

(Press and hold

for 2 sec.)

Verification (store)

When keypad isactive, enters Integra-tion time/dampening mode(push simultaneously

for 2 sec.)

When keypad is

active, resets to

default (push

simultaneously for

2 sec.)


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5.3 Calibration with Pressure

5.3.1 Zero Point Calibration

5.3.2 Span Calibration

Calibration of the measurement range (span).

Determine if the pressure to be used as the zero point (P 0 %), is present

at the transmitter diaphragm before calibration.

Action Display of Ammeter

Press and hold the "esc" and "ok" keys for 2 sec-onds to enter programming mode

Ammeter will flash to 20mA to confirm thatthe programming mode has been entered

Press the "zero" key to enter calibration mode Ammeter will flash to 20mA to confirm thatthe calibration mode has been entered

Adjust pressure at pressure port to desired zeropoint

mA value will change as pressure isadjusted

Once desired zero pressure is present at pres-sure port, press "ok" to accept

Display will flash to 20mA to confirmchange, then the ammeter should display4mA.

Pressing "ok" automatically exits the program-ming mode

Ensure that the pressure to be used as the span end-point (P 100 %) is

present at the transmitter diaphragm.



Ammeter will flash to 20mA to confirm thatthe programming mode has been entered

Press the "span" key to enter calibration mode Ammeter will flash to 20mA to confirm thatthe calibration mode has been entered

Adjust pressure at pressure port to desired full

span pressure

mA value will change as pressure is

adjusted

Once desired full span pressure is present atpressure port, press "ok" to accept



A change in the zero point has no effect on the calibrated span. A change

in the span setting has no effect on the zero point. The zero point and span

end-point must fall within the sensors nominal pressure range. Setting the

spans peak point outside the nominal range of the sensor will reduce thespan accordingly.


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5.4 Calibration without Pressure

Determine the current reference values for the zero point and the span to be entered

in the transmitter before calibration. This is done as follows:

5.4.1 Zero Point Calibration Determine the hydrostatic pressure of the liquids surface that meets the zero point.

Adjust this pressure in proportion to the sensors nominal pressure range.

Multiply this proportion by 16 mA and add 4 mA to the result.

This produces the calculated current (value Icalc), which is entered in the transmitter

and used to program the zero point (0%).

Example:

A pressure transducer with 0 - 250" WC (nominal pressure) needs to be pro-

grammed.The liquids surface (with a density of 1) is 2 feet above the diaphragm at

the zero point producing a pressure of 24" WC.

This means that the devices current value must be set to 5.54 mA when performing

a dry (empty) calibration.


Calculate the mA reading that corresponds to the desired zero pressure using the

method described above

Press and hold the "esc" and "ok" keys for

2 seconds to enter programming mode

Ammeter will flash to 20mA to confirm

that the programming mode has been

entered

Press the "zero" key to enter calibration

mode


that the calibration mode has been

entered

Use arrow keys to adjust mA reading to

precalculated value for zero point pres-

sure

mA value will change as arrow keys

are pressed

Once precalculated mA reading is dis-

played by ammeter, press "ok" to accept

Display will flash to 20mA to confirm

change, then the ammeter should dis-

play 4mA.

Pressing "ok" automatically exits the pro-

gramming mode

IcalcZero point pressure (0%) 24" WC

Sensors nominal pressure 250" WC------------------------------------------------------------------------------------------------ 16 mA 4 mA+ 5.54 mA= =


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5.4.2 Span Calibration

Determine the hydrostatic pressure of the liquids surface, which corresponds to the

span end-point.

Calculate the difference of the pressure value between span end-point and zero

point and divide this difference by the nominal pressure range of the sensor.

Multiply this proportion by 16 mA and add 4 mA to the result.

This produces the calculated current (value Icalc), which is entered in the transmitter

and used to program the span end-point (100%).

The measurement range between zero point and span end-point will be stored as

span.

Example:

A pressure transducer with 0 - 250" WC (nominal pressure) is to be programmed. The

liquids surface (with a density of 1) is 2 feet above the diaphragm at the zero point.

The maximum (span end-point) should be 18 feet.

This means that the output must be set to 16.24 mA during programming.


Calculate the mA reading that corresponds to the desired zero pressure using the methoddescribed above

Press and hold the "esc" and "ok" keys for 2 sec-

onds to enter programming mode

Ammeter will flash to 20mA to confirm that

the programming mode has been entered

Press the "span" key to enter calibration mode Ammeter will flash to 20mA to confirm thatthe calibration mode has been entered

Use arrow keys to adjust mA reading to precal-culated value for full span pressure

mA value should change as arrow keys arepressed

Once precalculated mA reading is displayed byammeter, press "ok" to accept



A change in the zero point has no effect on the adjusted span.

However, if the span end-point is higher than the peak value of the

sensors nominal pressure range, then the span end-point is fixed at

this peak value and the span is reduced accordingly.

A change in the span setting has no effect on the zero point. The zero

point and span end-point must fall within the sensors nominal pres-

sure range.

A test / correction of the zero point is suggested after adjusting the

span in order to maintain optimum accuracy.

Icalc

pressure difference (span) (216" WC -25" WC)

Sensors nominal pressure 250" WC--------------------------------------------------------------------------------------------------------------------------- 16 mA 4 mA+ 16.24 m= =

Important


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5.5 Integration Time (Dampening) Adjustment

The following integration time settings can be used: 0, 1, 5, 20 and 40 s.

The sensors measured values can then be averaged using the adjusted integration

time.

5.6 Reset to Default

All default data settings are restored by first activating the keypad, then simultaneous-

ly pressing the "zero", "esc" and the "ok" buttons for 2 seconds (see Para. 6.4 for de-fault data).





that the programming mode has been

entered

Press and hold the "zero" and "span" keys

to enter integration time adjustment mode


that the adjustment mode has been

entered

Press "zero" to set integration time to 0 s.If a different time is desired, press the up

arrow key once for 1 s, twice for 5 s, three

times for 20 s, and four times for 40 s.

Ammeter will flash to 20mA to confirmeach key stroke and then return the

mA reading for current pressure

Once desired integration time is selected,

press the "ok" key to save and exit pro

gramming mode

Display will flash to 20mA to confirm

change, then the ammeter should dis-

play mA based on current pressure

Special calibrated measurement ranges can be factory pre-set

i. e. 15PSI on a 25PSI transmitter. Resetting to default will change the

sensor back to its nominal range (i. e. 25PSI). The factory pre-setting is

lost.

Important


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(80 ) 645 - 0606 Fax (770) 277 - 2641 E-mail: [email protected] h ttp://www.wika.com 21

6.2 Key Functions

6.3 The Programming Mode

The device can be programmed before or after installation.The keypad is activated and the device can be programmed by simultaneously press-

ing the "esc" and "ok" keys (for 2 sec.). This method is used to access the main

menus. Each main menu has one or more sub-menus and each sub-menu, may have

its own sub-menus.

Button Functions

Main Menu Sub-menu Edit Functions

back to the previousmenu option

back to the previousmenu option

increase value

forward to next menu

option

forward to next menu

option

decrease value

back to value display

without saving

back to main menu

without saving

back to the sub-menu

without saving

to the sub-menu to the edit functions save value

activate keypad (push simultaneously; 2 s)

The keypad becomes inactive if not used for 10 minutes. All settings will

default to previously stored values. Only settings that have been confirmed

with the "ok" function are stored.

A change in the starting measurement (zero point) has no effect on the

measurement span. Likewise, a change in the span has no effect on thestarting measurement.

An error signal occurs when the zero point or span settings fall outside of

the sensors nominal pressure range during calibration with pressure.

Nothing is saved.


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Universal Transmitter UniTransOperation of Devices with Displays




6.4 Default Data (factory setting)

Function Defaults

Display Unit of measurement

(Line 1)Line 2

Line 3

Pressure display (in bar)

Temperature display (in C)

Sensors nominal pressure range (in bar)

Calibration zero 4 mA = nom. pressure range start

span 20 mA = nom. pressure range end

Output Damping

Inversion

Fault

Limits

Current-offset

0 s

no

21 mA (upscale)

3.8 to 20.5 mA

0 mA

Service password no active password

Service mounting correction not activated

Language English

Evaluation linear

density

yes

1 g/cm3

Special calibrated measurement ranges can be factory pre-set

i. e. 15 PSI on a 25 PSI transmitter. Resetting to default will set the sen-

sor back to its nominal range (i. e. 25 PSI). The factory pre-setting islost.

Important


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6.5.1 Main Menu: Display (changing measured value units, changing line 2 and line 3)

Changing units on the measured value display

(mbar, bar, PSI, at, mA, %, mm, m, inch, feet, Pa, hPa, mmWS, mWS, mmHg

The density of a medium must be entered to calculate the correct fill-level

when displaying or adjusting the level in height units (e.g. mm, m, feet,

inch)(see 6.5.4).

Action Display will read



"Display Options"

Press "ok" to activate display menu "Unit Displayed"

Press "ok" to begin selecting units "Unit"

Use up and down arrow keys to select

desired units

Displays selected units as the arrow

keys are pressed

Once desired units are on the screen, press "ok" to select and save, then press the

esc" key until exiting the programming mode


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Changing additional information on display lines 2 and 3

(measure %, blank, min value, max value, temperature, current[mA], P-range)




"Display Options"

Press "ok" to activate display menu "Unit Displayed"

Press down arrow once to change Row 2

or twice to change Row 3

"Display Row 2" or

"Display Row 3"

Press "ok" to begin selecting desired infor-

mation

Displays selected information as

arrow keys are pressed

Once desired information is displayed, press "ok" to select and save, then press

"esc" until exiting programming mode. Please see below if selecting min or max

value or temperature

If selecting temperature, when "ok" is pressed, you are given the choice between

Celsius or Farenheit temperature scales. Use the up and down arrow keys to

select desired scale, then press "ok" to select and save. Finish by pressing "esc"until exiting programming mode.

If selecting min or max value, when "ok" is pressed, you are given the choice

between measurement (pressure values) or temperature. Use the up and down

arrow keys to select desired information, then press "ok" to select and save. Finish

by pressing "esc" until exiting programming mode.


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6.5.2 Main Menu: Calibration of zero and span (with / without pressure)

Calibration of zero with pressure

Calibration of zero without pressure




"Display Options"

Press the down arrow key "Calibrate Range"

Press "ok" "Calibrate With Pressure"

Press "ok" "Calibrate Set Zero"

Adjust pressure at pressure port to prede-

termined zero point

As the pressure changes the display

will give current pressure reading

Once desired zero pressure is at pressure port, press "ok" to select and save, then

press the"esc" key until exiting the programming mode

Action Display will readPress and hold the "esc" and "ok" keys for


"Display Options"



Press the down arrow key "Calibrate Without Pressure"

Press "ok" "Calibrate Def. Zero"

Press "ok" "Def. Zero 4mA = ?"

Use the up and down arrow keys to adjust

the mA signal to the precalculated value

that corresponds to desired zero pressure

The mA value will vary as the up and

down arrow keys are pressed

Once desired mA signal for zero pressure is set, press "ok" to select and save,

then press the"esc" key until exiting the programming mode


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Calibration of span with pressure

Calibration of span without pressure




"Display Options"



Press "ok" "Calibrate Set Zero"

Press the down arrow key "Calibrate Set Span"

Adjust pressure at pressure port to prede-

termined full span pressure

As the pressure changes the display

will give current pressure reading

Once desired full span pressure is at pressure port, press "ok" to select and save,



Press and hold the "esc" and "ok" keys for 2

seconds to enter programming mode

"Display Options"



Press the down arrow key "Calibrate Without Pressure"

Press "ok" "Calibrate Def. Zero"

Press down arrow key "Calibrate Def. Span"

Press "ok" "Def. Span 20mA = ?"


the mA signal to the precalculated value that

corresponds to desired full span pressure

The mA value will vary as the up

and down arrow keys are pressed

Once desired mA signal for full span pressure is set, press "ok" to select and save,then press the esc" key until exiting the programming mode


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A single pressure value is set for the zero point or the span end-point

within the sensors nominal pressure range, and assigned to the associ-

ated mA signal when making adjustments with existing pressure. An er-

ror signal occurs when the existing pressure lies outside of the sensors

nominal pressure range. The value is not saved in this case.

A mounting correction should be performed before or after making an

adjustment without pressure (dry adjustment) (see 6.5.4). The sensor

must therefore be placed in the reference position for the measurement

(installation site) without pressure on the diaphragm.

A mounting correction is unnecessary when making an adjustment with

pressure (wet adjustment). Otherwise, the mounting correction must be

performed before saving the zero point and span end- point.

A test / correction of the zero point is suggested after adjusting the

span in order to maintain optimum accuracy.

Important

Important


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6.5.3 Main Menu: Output (Integration time, Inversion, Alarm, Limits, Current offset)

Integration time / signal dampening

Output Inversion(Inverted 20-4mA, reverted 4-20mA)




"Display Options"


Press the down arrow key "Output Definition"

Press "ok" "Output Damping"

Press "ok" "Damping D = 0 sec."

Press the up or down arrow keys to select

desired signal damping time

Damping time will change as arrow

keys are pressed

Once desired mA signal for full span pressure is set, press "ok" to select and save,





"Display Options"




Press the down arrow key "Output Inversion"

Press "ok" to invert the signal to 20-4mA,

then press "esc" until exiting the program-

ming mode

"Output inversion >OFF"

If the output signal is already inverted, then when entering the mode, the display

will initially read "Output Inversion >OFF". To revert the signal, press "ok" then

"esc" until exiting the programming mode


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Output Alarm/Error(Warns if pressure is outside of sensors nominal range)


Press and hold the "esc" and "ok" keys fo


"Display Options"





Press the down arrow key "Output Alarm/Error"

Press "ok" "Alarm I=3.6 mA"

Press "ok" to activate, this alarm activates

when the current drops to 3.6 mA

"Output Alarm/Error"

Press "ok" "Alarm I=3.6 mA"

Press down arrow key "Alarm I=21 mA"

Press "ok" to activate, this alarm activates

when the current reaches 21 mA

"Output Alarm/Error"

Press "esc" until exiting programming mode


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Output Limits(Sets the upper and lower limits for the output signal)




"Display Options"






Press the down arrow key "Output Limits"

Press "ok" "Limits 3.8 - 20.5 mA"

Use the up and down arrow keys to select the limit to be either 3.8-20.5 mA or 4-20

mA fixed

Once limit desired is displayed, press "ok" to accept, then press "esc" until exitingprogramming mode

Please note: When the limit is set to 3.8-20.5 mA, the current will hold at the limit

point when the sensing range is exceeded.

Please note: When the limit is set to 4-20mA, the alarm condition will go into effect

when the limits are reached. When this happens it is necessary to restart the

device by using reset or shutting down power to the unit.


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Output Current Offset




"Display Options"






Press the down arrow key "Output Limits"

Press the down arrow key "Output Current Offset"

Press "ok" "I-Offset I=0.0000"

Use the up and down arrow keys to set the

zero offset to desired level

The value for the mA offset should

change as arrow keys are pressed

Once desired offset is displayed, press "ok" to accept and save, then press "esc"

until exiting the programming mode

Please note: The output current is combined with an assigned offset, which can

have a maximum of + 0.8 mA.


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6.5.4 Main Menu: Evaluation (Reference table, Linear activation, Media density)

Reference Table/Tank Linearization




"Display Options"



Press the down arrow key "Evaluation Functions"

Press "ok" "Evaluation Ref. Table"

Press "ok" "Reference Point Insert"

The next steps explain how to add level and volume pairs for tank linearization.

The UniTrans allow for up to 32 reference points. The value pairs for 0% and

100% are fixed. Repeat these steps for each point.

Press "ok" Insert h[%] = ?


the level as a percentage of total span

The percent of level changes as

arrow keys are pressed

Press "ok" Insert v[%] = ?


the volume as a percentage of total volume

The percentage of volume changes

as arrow keys are pressed

Press "ok" to accept value pair and save "Reference Point Insert"

Press "ok" to enter another pair or press

down to continue

If down key is pressed, display will

read "Reference Point Delete"

Press "ok" to delete a reference point or

press down key to continue


read "Table Edit"

Press "ok" to edit table, or press down key

to continue


read "Table Activate?"

Press "ok" "Table Active"

Press "esc" key until exiting the programming mode


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Enter height values, which are each assigned a volumetric value of measure for tank

linearization. The linearization and the assignment of the 4 - 20 mA output signal are

converted into tank volumes using this value pair.

Example:

For the tank to the left with a UniTrans mounted on the bottom

left corner, the volume does not have a direct relationship with

the level that the UniTrans is reading. By setting one of the

lines of the display to read measure %, height/volume pairs

can be programmed to display how full the tank is as a percent-

age of total volume. At 25" WC, the height/volume pair would

be calculated as follows:

For the height value, 25" WC is 25% of the full span so h[%]=25

For the volume value, the volume at 25" must be calculated. At 25" WC the volume in the abovetank is 218,750 in3, the total volume is 500,000 in3. So at 25" WC the tank is 43.75% full. Thevolume part of the height/volume pair is v[%]=43.75.

The more points programmed into the Unitrans (up to 32) the more accurate the measurement as

a percentage of total volume will be.

Linear Evaluation(linear correlation between input and output is set)

Please check the following if "Wrong Entry" appears in the Evaluation

menu:

whether or not more than 32 value pairs are entered in the table for tank

linearization (please note: P 0 and P 31 are fixed at 0% and 100% re-

spectively)

whether or not an height value is already entered

Please enter correct values.



"Display Options"





Press down key "Evaluation Linear"

Press "ok" "Linear Activate ?"

Press "ok" to select and save, then press "esc" until exiting the programming mode

100"

100"

100"


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Adjusting for media density/or specific gravity

Example:

Level 100 %: 40 feet

Specific gravity: 1.0

Specific gravity correction: 0.9

Span end point:

The span (end-point) must be re-calibrated (with or without pressure) to 44.44 feet, in

order to prevent a 40 foot tank from being overfilled.




"Display Options"





Press down key "Evaluation Linear"

Press down key "Evaluation Density"

Press "ok" "d/[g/m^3] d=?"

Use the up and down arrow keys to enter

the density of the media

The value for the density will change

as the arrow keys are pressed

Once the desired density is displayed press "ok" to select and save, then press"esc" until exiting the programming mode

A change or correction in the density causes a change in the span end-

points unit of measure (mm, m, inch, feet). The span end-point must be

re-calibrated when changing the medium to be measured (due to a

change in density).

40 ft 1 g/c

3

0.9 g/cm3------------------------------------ 44.44 feet=

Important


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6.5.6 Main Menu: Service (Mounting Correction, Loop Test, Timer, Reset, Password)

Mounting Correction(automatically adjust for horizontal or vertical mounting)

Loop Test(test to assure proper connection of the UniTrans)



"Display Options"




Press the down arrow key "Language Options"

Press the down arrow key "Service Functions"

Press "ok" "Mounting Correction"

Once the UniTrans is mounted, make sure no pressure is applied to the sensor and press "ok",the UniTrans will automatically correct for its mounting position, then press "esc" until exitingthe programming mode.



"Display Options"







Press down arrow key "Service Loop Test"

Press "ok" "Circuit Test I = ? mA"

Use the up and down arrow keys to set desiredmA value for loop test

Displayed mA value will change as arrowkeys are pressed

The UniTrans will continue to output the set mA signal until the "esc" key is pressed, once thisis done, continue pressing "esc" until exiting the programming mode


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Timer(total hours in operation, hours since last calibration and reset and sensor operation)



"Display Options"








Press the down arrow key "Service Device Data"

Press the down arrow key "Service Timer"

Press "ok" "hrs-Total"

This displays total operating hours

Press the down arrow key "hrs- Calib"This displays number of hours since lastcalibration

Press the down arrow key "hrs- Reset"This displays number of hours since lastreset

Press the down arrow key "hrs- Sensor"This displays number of hours the sensorhas been in operation

After viewing the information desired, press "esc" until exiting programming mode.

The service timer is for information purposes only, no functions can be resetthrough this module.


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Reset(resets timer, min/max values, alarm, and resets all to factory settings)

Action Display

Press and hold the "esc" and "ok" keys for 2seconds to enter programming mode

"Display Options"










Press the down arrow key "Service Reset"

Press "ok" "Reset Timer"

Press "ok" to reset number of hours since lastreset, or press the down arrow key to continue

If the down arrow key is pressed display willread "Reset Mix/Max Val"

Press "ok" to reset Min and Max values, orpress the down arrow key to continue

If the down arrow key is pressed display willread "Reset All"

Press "ok" to reset all or press the down arrowkey to continue

"Reset Alarm"

Press "ok" to reset alarm, reset the alarm after exceeding the 4-20 mA limit (see Output Limitsin section 6.5.3). Press "esc" until exiting from programming mode.


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Password(locks keypad so settings can not be changed)

Action Display

Press and hold the "esc" and "ok" keys for 2seconds to enter programming mode

"Display Options"










Press the down arrow key "Service Reset"

Press the down arrow key "Service Password"

Press "ok" "Password Activate?"

Press "ok" "Password ?"

Use the up and down arrow keys to select up toa four digit number as the password

The value for the password will change asthe arrow keys are pressed

Once desired password number is displayed, press "ok" to select and save, then press "esc"until exiting the programming mode

Please note that when the password is active the calibration and evaluation ranges can not beaccessed. In order to access these parameters, the password must be de-activated. To de-activate the password follow the step outlined above.

If password is lost please contact the factory


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7 Diagnostics and Service

The following error messages can appear on devices with displays (see also para.

2.1.3):

8 Disposal

If the fault cannot be corrected, the device should be taken out of operation

and stored to prevent re-installation.

Repairs should only be performed by the manufacturer. All other repairs or

alterations are unauthorized.

Error Code Error Error Correction Measures

E00 ROM-error Return device to manufacturer

E01 Power supply error Test power supply

E03 EEPROM communications error Disconnect and reconnect power

supply

E04 Sensors temperature range was

exceeded

Return sensors temperature to

specified limits

E06 Sensor recognition Disconnect and reconnect power

supply

E07 General communications error

between the sensor and the con-

trol interface unit

Check the connection between

the sensor and the control inter-

face unit

Please observe local guidlines and regulations when disposing of

devices that are no longer serviceable.

Please turn any recycleable components in to the appropriate local orga-

nizations.

A t t e n t i o n

A t t e n t i o n

Important


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Universal Transmitter UniTransAppendix

Subject to change du e to technical modifications. Copyright WIKA Instrum ent Co rporation

WIKA Instrument Corp. 1000 Wiegand Bl vd. Lawrenceville, GA 30043

(800) 645 - 0606 Fax (770) 277 - 2641 E-mail: [email protected] http://www.wika.com42

9 Appendix

9.1 Dimension Diagrams

G 1/2B


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Subject to cha nge du e to technical modifications. Copyrig ht WI KA Instrume nt Corporation


(800) 645 - 0606 Fax (770) 277 - 2641 E-mail: [email protected] http://www.wika.com 43

9.2 Warranty Conditions

The UniTrans has a 12 month warranty from the date of purchase.

9.3 Glossary

Adjustment Allocation of the signal output range (4 - 20 mA) to the desired

pressure measurement range or level measurement range.

Integration Also dampening: timely communication of the measurement

signal; rise time of the current output signal after a signal surge

Inversion Conversion of the output signal from 4 - 20 mA to 20 - 4 mA

Nom. pressure range The operating pressure range for which the sensor was de-

signed

Zero point Start of the pressure measurement range

Parameterization Also configuration: programming of the relevant parameters

and the pressure measurement range specific to the application

and measurement location.

Span The programmed pressure measurement range

Span end point The highest pressure value of the programmed measurement

span (end-point of the span)

Tank linearization Determination of approximate volume/pressure ratio values

with non-linear correlations based on varying container designs

For example, a non-linear correlation exists between the fill lev-

el and the volume in spherical containers. During linearization,

the non-linear volume is assigned the 4 - 20 mA output signal

from a table of values (proximity process by means of up to 32

support points).

Defaults The sensor parameters are pre-programmed by the manufac-

turer

9.4 Units of Pressure Measurement

1 atm (atmospheres) = 760 mm Hg = 760 Torr

= 1.033 kp/cm2 = 0.1013 MPa

1 Torr = 133.3 Pa

1 kp/mm2 = 9.81 N/mm2 = 9.81 MPa

1 bar = 0.1 MPa

1 mbar = 1 hPa (Hektopascal)

1 psi (pound per square inch) = 6.895 10

3

Pa1 bar =33.5 feet of water

Notes:

Repairs may only be performed by the manufacturer. All other repairs and

device alterations are unauthorized and will void the warranty.

A t t e n t i o n


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Universal Transmitter UniTransAppendix

Subject to change du e to technical modifications. Copyright WIKA Instrum ent Co rporation

WIKA Instrument Corp. 1000 Wiegand Bl vd. Lawrenceville, GA 30043

(800) 645 - 0606 Fax (770) 277 - 2641 E-mail: [email protected] http://www.wika.com44


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