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Universal PressureTransmitter

UniTrans

Operating Manual

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Contents

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

2 Product Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32.1 Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32.1.1 Pressure Transducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32.1.2 Control Interface Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32.1.3 Display Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42.2 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.2.1 Functions of Devices without Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.2.2 Functions of Devices with Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.3 Installation Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.1 Input-values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.2 Output-values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.3 Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93.4 Auxiliary Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93.5 Ambient Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93.6 Process Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103.7 Identification Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114.1 Pressure Transmitter Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114.2 Display Unit Upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114.3 Housing Reconfiguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124.4 Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134.5 Pressure Compensation when using a Relative Pressure Sensor . . . . . . . . . . . . 14

5 Operation of Devices without Displays . . . . . . . . . . . . . . . . . . . . . . .155.1 Preparation for Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155.2 Key Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155.3 Calibration with Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165.3.1 Zero Point Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165.3.2 Span Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165.4 Calibration without Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175.4.1 Zero Point Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175.4.2 Span Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185.5 Integration Time (Dampening) Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195.6 Reset to Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

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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

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6 Operation of Devices with Displays . . . . . . . . . . . . . . . . . . . . . . . . . . 206.1 The Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .206.2 Key Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .216.3 The Programming Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216.4 Default Data (factory setting) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226.5 Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .236.5.1 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) . . . . . . . . . . . .266.5.3 Main Menu: Output (Integration time, Inversion, Alarm, Limits, Current offset) . . .296.5.4 Main Menu: Evaluation (Reference table, Linear activation, Media density) . . . . . 336.5.5 Main Menu: Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .366.5.6 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .429.2 Warranty Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .439.3 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .439.4 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 it’s 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.

Warning

Warning

Attention

Attention


WIKA Instrument Corp . · 1000 Wiegand Blvd. · Lawrenceville, GA 30043 · � (80 ) 64 - 0606 · Fax (770) 277 - 2641 · E-mail: [email protected] · http://www.wika.com2

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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 options enable 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


WIKA Instrument Corp . · 1000 Wiegand Blvd. · Lawrenceville, GA 30043 · � (80 ) 645 - 2641 · Fax (770) 277 - 2641 · E-mail: [email protected] · http://www.wika.com 3


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converts the sensor’s 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 of measure. 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).

CALIBRATIONRANGE


WIKA Instrument Corp. · 1000 Wiegand Blvd. · Lawrenceville, GA 30043 · � (80 ) 645 - 0606 · Fax (770) 277 - 2641 · E-mail: [email protected] · http://www.wika.com4


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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 manufacturer’s 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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3 Technical Data

3.1 Input-values

3.2 Output-values

Pressure Range(Absolute pressure upon request, please contact factory)

0 - 5 PSIG0 - 25 PSIG0 - 100 PSIG0 - 250 PSIG0 - 500 PSIG0 - 1500 PSIG0 - 3000 PSIG0 - 7500 PSIG0 - 15,000 PSIGothers - 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 accuracyaccuracy X (turn down / 5)for example if turndown is 1 : 15, then accuracy = 0.10X(15/5) = 0.3%

Load RA < (UB–12 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-10Type UT-11

1/2 NPTG 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 1.4542CrNi-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.

Attention

:Signal / Signal / Signal de sortie

:Hilfsenergie / Power supply / Alimentation

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

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 # 0639080S # 0639110

Code UT-10-A-BBM-GD-ZMIAAZZ-Z

Transmitter UT-10

TRONIC LINE

Anschlüsse/ 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 industry standards.

4.1 Pressure Transmitter Installation

Installation Using Welding Support:

• Insert a filler piece (a pressure transmitter dummy) into the welding support (P-1 adaptor 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 unit’s support cable to the same site.

• Plug the display unit’s connector into the appropriate jack.The display unit can be mounted at 90° angles.

• Fasten the display unit with screws.

The pressure transmitter’s diaphragm should not come into contact with hard or sharp objects.

Attention




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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).

Attention




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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 device’s 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 manufacturer’s 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 2When 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 is active, 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 AmmeterPress 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 "zero" key to enter calibration mode Ammeter will flash to 20mA to confirm that the calibration mode has been entered

Adjust pressure at pressure port to desired zero point

mA value will change as pressure is adjusted

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

Display will flash to 20mA to confirm change, then the ammeter should display 4mA.

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.

Action Display of AmmeterPress and hold the "esc" and "ok" keys for 2 sec-onds to enter programming mode


Press the "span" key to enter calibration mode Ammeter will flash to 20mA to confirm that the 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 at pressure 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 sensor’s nominal pressure range. Setting the span’s peak point outside the nominal range of the sensor will reduce the span 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 liquid’s surface that meets the zero point.

• Adjust this pressure in proportion to the sensor’s 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 liquid’s 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 device’s current value must be set to 5.54 mA when performing a dry (empty) calibration.

Action Display of AmmeterCalculate 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


Press the "zero" key to enter calibration mode

Ammeter will flash to 20mA to confirm 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 liquid’s 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 liquid’s 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.

Action Display of AmmeterCalculate 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 sec-onds to enter programming mode


Press the "span" key to enter calibration mode Ammeter will flash to 20mA to confirm that the 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 are pressed

Once precalculated mA reading is displayed by ammeter, 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 sensor’s 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 sensor’s nominal pres-sure range.

A test / correction of the zero point is suggested after adjusting the span in order to maintain optimum accuracy.

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

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

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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 sensor’s 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).

Action Display of AmmeterPress and hold the "esc" and "ok" keys for 2 seconds to enter programming mode


Press and hold the "zero" and "span" keys to enter integration time adjustment mode

Ammeter will flash to 20mA to confirm 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 confirm each 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 programming 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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6 Operation of Devices with Displays

6.1 The Display

In order to program the device, remove the display with a screwdriver and re-attach it to the housing as shown in the diagram below.



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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 Functionsback to the previous menu option

back to the previous menu 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 the starting measurement.

An error signal occurs when the zero point or span settings fall outside of the sensor’s nominal pressure range during calibration with pressure. Nothing is saved.




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6.4 Default Data (factory setting)

Function Defaults

Display Unit of measurement(Line 1)Line 2Line 3

Pressure display (in bar)

Temperature display (in °C)Sensor’s nominal pressure range (in bar)

Calibration zero 4 mA = nom. pressure range startspan 20 mA = nom. pressure range end

Output DampingInversionFaultLimitsCurrent-offset

0 sno21 mA (upscale)3.8 to 20.5 mA0 mA

Service password no active password

Service mounting correction not activated

Language English

Evaluation lineardensity

yes1 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 is lost.

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6.5 Main Menu

CALIBRATIONRANGE

DISPLAYOPTIONS

CALIBRATIONRANGE

OUTPUTDEFINITION

EVALUATIONFUNCTION

LANGUAGEOPTIONS

SERVICEFUNCTIONS




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

"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 read 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 "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, then press the"esc" key until exiting the 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 = ?"

Use the up and down arrow keys to adjust 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 sensor’s 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 sensor’s 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, then press the"esc" key until exiting the programming mode


"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)

Action Display will readPress and hold the "esc" and "ok" keys fo2 seconds to enter programming mode

"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 exiting programming 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[%] = ?

Use the up and down arrow keys to adjust the level as a percentage of total span

The percent of level changes as arrow keys are pressed

Press "ok" Insert v[%] = ?

Use the up and down arrow keys to adjust 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

If down key is pressed, display will read "Table Edit"

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

If down key is pressed, display will 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 above tank is 218,750 in3, the total volume is 500,000 in3. So at 25" WC the tank is 43.75% full. The volume 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 enteredPlease enter correct values.

Action Display will readPress and hold the "esc" and "ok" keys for 2 sec-onds to enter programming mode

"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

1 00"

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-point’s 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=

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6.5.5 Main Menu: Language

Language Options

Action Display will readPress and hold the "esc" and "ok" keys fo2 seconds to enter programming mode

"Display Options"




Press the down arrow key "Language Options"

Press "ok" "Language English"

Use the up and down arrow keys to select either English, German or French

Language changes as arrow keys are pressed

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




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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 "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 exiting the 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 desired mA value for loop test

Displayed mA value will change as arrow keys are pressed

The UniTrans will continue to output the set mA signal until the "esc" key is pressed, once this is 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 last calibration

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

Press the down arrow key "hrs- Sensor"This displays number of hours the sensor has 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 reset through this module.




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

Action DisplayPress and hold the "esc" and "ok" keys for 2 seconds 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 last reset, or press the down arrow key to continue

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

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

If the down arrow key is pressed display will read "Reset All"

Press "ok" to reset all or press the down arrow key to continue

"Reset Alarm"

Press "ok" to reset alarm, reset the alarm after exceeding the 4-20 mA limit (see Output Limits in 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 DisplayPress and hold the "esc" and "ok" keys for 2 seconds 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 to a four digit number as the password

The value for the password will change as the 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 be accessed. 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 MeasuresE00 ROM-error Return device to manufacturer

E01 Power supply error Test power supply

E03 EEPROM communications error Disconnect and reconnect power supply

E04 Sensor’s temperature range was exceeded

Return sensor’s 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.

Attention

Attention

Important

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9 Appendix

9.1 Dimension Diagrams

G 1/2B


WIKA Instrument Corp. · 1000 Wiegand Blvd. · Lawrenceville, GA 30043 · � (800) 645 - 0606 · Fax (770) 277 - 2641 · E-mail: [email protected] · http://www.wika.com42

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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 · 103 Pa

1 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.

Attention


WIKA Instrument Corp. · 1000 Wiegand Blvd. · Lawrenceville, GA 30043 · � (800) 645 - 0606 · Fax (770) 277 - 2641 · E-mail: [email protected] · http://www.wika.com 43

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WIKA Instrument Corp. · 1000 Wiegand Blvd. · Lawrenceville, GA 30043 · � (800) 645 - 0606 · Fax (770) 277 - 2641 · E-mail: [email protected] · http://www.wika.com44

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