GHM GREISINGER GMUD MP Series Documento tecnico

T45.0.0X.6C-09

GHM GROUP - Greisinger

GHM Messtechnik GmbH | Hans-Sachs-Str. 26 | 93128 Regenstauf | GERMANY

Tel.: +49 9402 9383-0 | [email protected] | www.greisinger.de

Mounting and operating manual

Pressure Transducer

As of Version 2.2

GMUD MP



Read carefully before first operation!

WEEE-Reg.-Nr. DE 93889386



Consider safety instructions!



Keep for future reference!

T45.0.0X.6C-09 Mounting and operating manual GMUD MP Page 2 of 16 
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1GENERAL NOTE......................................................................................................................................................3 
2SAFETY......................................................................................................................................................................3 
1 INTENDED USE.......................................................................................................................................................3 
2 QUALIFIED STAFF ..................................................................................................................................................3 
3 SAFETY SIGNS AND SYMBOLS................................................................................................................................3 
4 SUITABILITY ..........................................................................................................................................................3 
5 REASONABLY FORESEEABLE MISUSE ....................................................................................................................3 
6 SAFETY INSTRUCTIONS..........................................................................................................................................4 
6.1 During configuration .....................................................................................................................................4 
6.2 During normal operation...............................................................................................................................4 
3PRODUCT DESCRIPTION......................................................................................................................................5 
1 SCOPE OF SUPPLY ..................................................................................................................................................5 
2 OPERATING AND MAINTENANCE ...........................................................................................................................5 
3 TYPE PLATE ...........................................................................................................................................................5 
4 AVAILABLE OPTIONS.............................................................................................................................................5 
5 GENERAL INSTALLATION INSTRUCTIONS ..............................................................................................................6 
5.1 Wall mounting................................................................................................................................................6 
5.2 Connector mounting.......................................................................................................................................6 
5.3 Pressure connection.......................................................................................................................................6 
5.4 Commissioning...............................................................................................................................................7 
5.5 Decommissioning...........................................................................................................................................7 
5.6 Ready for operation .......................................................................................................................................7 
6 CONNECTION .........................................................................................................................................................8 
7 DISPLAY ................................................................................................................................................................9 
8 KEYPAD.................................................................................................................................................................9 
4CONFIGURATION.................................................................................................................................................10 
1 PASSWORD LOCK.................................................................................................................................................10 
2 OUTPUT CONFIGURATION....................................................................................................................................10 
3 CORRECTION .......................................................................................................................................................11 
4 SEA LEVEL CORRECTION (ONLY FOR ABSOLUTE DEVICES) .................................................................................11 
5 TRANSISTOR OUTPUT (ONLY AVAILABLE WITH OPTION –OUT) .........................................................................11 
6 FILTER SETTINGS .................................................................................................................................................12 
7 LOCK SETTINGS ...................................................................................................................................................12 
5DETAILS FOR PRESSURE MEASUREMENT ..................................................................................................12 
1 ABSOLUTE PRESSURE ..........................................................................................................................................12 
2 DIFFERENTIAL PRESSURE ....................................................................................................................................12 
3 RELATIVE PRESSURE ...........................................................................................................................................12 
6ERROR AND SYSTEM MESSAGES....................................................................................................................13 
7INSPECTION OF ACCURACY / ADJUSTMENT SERVICE ...........................................................................13 
8RESHIPMENT AND DISPOSAL...........................................................................................................................13 
9SPECIFICATION ....................................................................................................................................................14 
SENSOR ACCURACIES.....................................................................................................................................15 
1 ACCURACIES WITH STANDARD MEASURING RANGES......................................................................................15 
1.1 GMUD-MP special model for low pressure (differential pressure) ............................................................15 
1.2 GMUD-MP standard (differential pressure)...............................................................................................15 
1.3 GMUD-MP standard (absolute pressure) ...................................................................................................15 
1.4 GMUD-MP special model for barometric pressure ....................................................................................15 
2 ACCURACIES WITH SPECIFIC MEASURING RANGES..........................................................................................15 
 
 
 

T45.0.0X.6C-09 Mounting and operating manual GMUD MP Page 3 of 16

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1 General note

Any task should exclusively be performed by subject-specific qualified personnel.

The skilled personnel should carefully read and understand the manual before using the device.

Keep this document in reach for reference in case of any doubt.

The liability and warranty of the manufacturer for damages and consequential damages expires with

unintended use, failure to observe these operating instructions, non-observance of safety instructions,

insufficiently skilled qualified personnel or unauthorized modifications to the device.

2 Safety

2.1 Intended use

The transducers of the GMUD MP series are exclusively suitable for:

Transducing of (depending on device type) differential, relative or absolute pressure (within the pressure

range specified on the identification plate meeting all specifications in 9 Specification on page 14 and 10

Sensor accuracies on page 15) into an electrical signal (adjustable, 4..20 mA or 0..10 V). Any other use is

not intended!

2.2 Qualified staff

For operating, running, maintaining and commissioning the device, the staff needs to have an adequate level

of knowledge of both, the measuring and the meaning of measured values. This manual can be a valuable

contribution. All instructions have to be well-understood and complied with. To be sure that there is no risk

arising due to misinterpretation of measured values, the operator must have further knowledge in case of

doubt - the user is liable for any harm/damage resulting from misinterpretation due to insufficient knowledge.

The manufacturer will assume no liability or warranty in case of usage for other purpose than the intended

one, ignoring this manual, operating by unqualified staff as well as unauthorized modifications to the device.

2.3 Safety signs and symbols

Warning notices are marked in this manual as shown below:

Caution! This symbol warns of imminent danger, death, serious injuries and significant

damage to property at non-observance.

Attention! This symbol warns of possible dangers or dangerous situations which can

provoke damage to the device or environment at non-observance.

Note! This symbol point out processes which can indirectly influence operation or provoke

unforeseen reactions at non-observance.

2.4 Suitability

The operator is responsible for verifying that the product is suitable for the desired

application. In case of doubt please contact our sales and marketing department.

The GHM-Messtechnik GmbH is not liable for incorrect choice, mounting, configuration or

connection and any result obtained from this!

2.5 Reasonably foreseeable misuse

This device must not be used at potentially explosive areas!

The transducer must not be used at a patient for diagnosis or any other medical

purpose!

The differential pressure transducers must not be used as safety pressure monitor

for fireplace, exhaust- or ventilating systems!

Do not use this product as safety or emergency stop device or in any other

application where failure of the product could result in personal injury or material

damage.

Any failure to comply with these instructions could result in death, serious injury and

material damage.

T45.0.0X.6C-09 Mounting and operating manual GMUD MP Page 4 of 16

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2.6 Safety instructions

This device has been designed and tested in accordance with the safety regulations for electronic devices.

However, its trouble-free operation and reliability cannot be guaranteed unless the standard safety measures

and special safety advises given in this manual will be adhered to when using the device.

2.6.1 During configuration

When transporting the device from a colder to a warmer ambience condensation may

cause a malfunction. In that case, before operating, it is needed to wait until the device

temperature has aligned to the ambience.

The conceptual design, particularly when connecting with other devices has to be done

thoroughly.

Internal connections of other devices (e.g. from ground with protective earth)

may lead to prohibited voltage levels that could disturb the function, damage or even

destruct the device or any connected equipment.

Never run the device with a damaged or faulty power supply.

Risk of death by electrocution!

2.6.2 During normal operation

Whenever there may be a risk whatsoever involved in running it, the device has to be

switched off immediately and to be marked accordingly to avoid re-starting. Operator safety

may be a risk if:

- there is visible damage to the device

- the device is not working as specified

- the device has been stored under unsuitable conditions for a longer time

In case of doubt, please return device to manufacturer for repair or maintenance (with

costs).

After exceeding the specification an inspection or repair at charge at the manufacturer’s site

is necessary. Tubes, connectors or the sensor element inside the device could be damaged

due high pressure or temperature. These damages can (even at a later time) lead to

functional disorder.

T45.0.0X.6C-09 Mounting and operating manual GMUD MP Page 5 of 16

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3 Product description

3.1 Scope of supply

GMUD MP with one elbow-type plug (2 with option /OUT)

Mounting and operating manual GMUD MP

Unit labels (depending on type)

3.2 Operating and maintenance

Treat device and sensor carefully. Use only in accordance with above specification. (Do

not throw, hit against etc.). Protect plug and socket from soiling.

Supply connection / mains operation:

When connecting a mains cable, please take care to connect only allowed components.

Carefully check the polarity and the correct connection.

Don’t apply overvoltage!

The device contains no serviceable parts inside. In case of errors or malfunction please

return device to manufacturer for repair or maintenance (with costs).

3.3 Type plate

Production date

code

Serial number

Article number

CE-Conformity

(see page 14)

Disposal references

(see page 13)

Carefully read the

manual

Manufacturer address

3.4 Available options

Option

Description

LACK

Printed circuit board coated on both sides (e.g. for outdoor use)

OUT

Additional transistor output

WE: …

Factory pre-configurated (e.g. output configuration)

MBF, MBS

Custom pressure range (see page 15)

Closed housing, display and keypad under top cover

Option WE: …

The factory pre-configuration can be changed manually.

Carefully check configuration before every commissioning.

Hint for option -OD:

Open cover for having access to display and buttons

T45.0.0X.6C-09 Mounting and operating manual GMUD MP Page 6 of 16

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3.5 General installation instructions

All screws and fittings have to be tightened finger tight.

Any cable used must fulfill the correct function of the strain relief.

It’s only permitted to use cables with sufficient cable cross-section.

Cables with visible optical or mechanical damages have to be replaced immediately by

faultless ones.

The device operation is only permitted with closed housing, signal- and supply lines being

correctly wired, screwed connector sockets with correctly attached connector seal and with

pressure lines being correctly connected and secured to prevent accidental releasing.

3.5.1 Wall mounting

For wall mounting loosen screws (A). Remove

cover (B) from base (D).

Wall mounting screws (C) are not included.

The mounting-hole-diameter is 4.2 mm.

See pattern drilling above (50 x 70 mm)

3.5.2 Connector mounting

Release the screw (1).

Unplug the connector.

Release the connection sealing, cable fitting (2), shim (3) and sealing-ring (4).

Pull out the connection socket (6).

Thread cable through parts (2), (3), (4) and into connector-housing (5). Connect wires according to wiring

diagram on page 8.

Reattach part (6) in (5). According to mounting situation select best of the 4 possible positions.

Reattach parts (4) and (3) and tighten (2). Plug in the connector with connection sealing and tighten (1).

3.5.3 Pressure connection

Left pressure port: Higher pressure (+)

Right pressure port (if available): Lower pressure (-)

Depending on pressure and pressure-tube a securing for accidental removing is needed (recommendation:

GDZ-18 or GDZ-19)

Pattern drilling

for wall mounting

50 x 70 mm

T45.0.0X.6C-09 Mounting and operating manual GMUD MP Page 7 of 16

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3.5.4 Commissioning

Unpack the device, accessories and check scope of supply (maybe the packing still contains some parts).

Mount the device according to general mounting instructions permanent and safe.

Attach non-active power supply.

Carefully check connection (supply and signal)

Connect transistor output with circuitry or detector (only with option /OUT).

Now activate the power supply.

Configure the device (Settings, output …).

Check transistor output.

Carefully check normal operation mode of the output (“output in case of an error”):

When exceeding the range, according to configuration the output can change from 20 mA to < 3.6 mA! On a

control chain a vent control would keep the vent open! In that case the normal operation mode of the output

must be set to > 20 mA to close the vent.

Check correct function of the notification chain (only with option /OUT).

Mount the pressure tubes and secure the tube from accidental removing.

Now apply process pressure.

3.5.5 Decommissioning

Turn off process pressure and wait until the pressure has fallen to 0.

Unplug the pressure tubes after that unplug the supply and all circuitry.

Demount device.

3.5.6 Ready for operation

Right after turning on the device will perform a self-diagnostic check (about 5 sec.)

During this time, all display segments are active and the output is in error-state.

After the check the device will change in measuring mode and is ready for use.

T45.0.0X.6C-09 Mounting and operating manual GMUD MP Page 8 of 16

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3.6 Connection

Connection for the elbow-type plug (according to device configuration)

Only with option /OUT

Connector left side

DC-isolated switching output,

switching to GND.

Threshold settings via configuration

Switching output

1 = + (UAl max 28V, IVmax 40mA)

2 = -

Connector right side Supply and

signal output Current- or voltage

signal selectable via menu

Current (4..20 mA)

1 = 4..20 mA current loop +

2 = 4..20 mA current loop -

3 = Do not connect!

Voltage (0..10 V)

1 = +UV (+18..30 VDC) / 24 V AC

2 = GND / 24 V AC

3 = 0..10 V output

The cable length on the transistor output must not exceed 3 m and must not leave parts of

the building!

An appropriate external surge protection (e.g. in case of direct / indirect lightning stroke)

must be installed when using cable length > 30 m, when the cabling is leaving parts of the

building or when using on a central direct current feed-in.

Otherwise the following applies:

The cables for 0..10 V and 4..20 mA must not leave parts of the building!

The cables for 0..10 V and 4..20 mA must not exceed a length of 30 m!

T45.0.0X.6C-09 Mounting and operating manual GMUD MP Page 9 of 16

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3.7 Display

Labels can be replaced in the transparent unit-window. To replace a label, unscrew the cover and shove it

in.

The displayed unit is according to the configuration set in

Display

Information

Correction active

Offset-, scale- or sea-level-correction

Switching output active

Upper or lower threshold value

Value with decimal point according to selected unit.

Display self test (at device startup)

Clear (Resets min and max value memory)

Lo (Displays min value from memory)

Hi (Displays max value from memory)

3.8 Keypad

Task

Keypad

Display

Description

View min value

Press button ▼

shortly once

For 15 seconds the display will alter between min

value and ‘Lo’.

View max value

Press button ▲

shortly once

For 15 seconds the display will alter between max

value and ‘hi’.

View current

value

Press button SET

shortly once

Current value is displayed

Reset min and

max value

memory

Press and hold

button ▼and ▲

Resets min and max value memory, display shows

‘CLr’ (clear) and alters to normal display mode.

Configuration

Press and hold

button SET

Opens the configuration menu

T45.0.0X.6C-09 Mounting and operating manual GMUD MP Page 10 of 16

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4 Configuration

Follow these instructions to configure the functions of the device:

Press button SET until the first parameter becomes visible in the.

Switch to the desired parameter by pressing the button SET.

Use the button ▲or ▼to change a value and use button SET to validate the value.

If there is no key pressed within the menu mode within 2 minutes, the configuration will be

cancelled.

All changed settings will be lost!

Changing the device parameters is password protected by factory default. The password

must be set correctly to 185 for entering the menu. The last menu point gives the option to

disable the password protection.

4.1 Password lock

Display

Values

Information

SET

Button ▼ and ▲

Password

For entering the configuration menu the password has to be set to 185.

4.2 Output configuration

To achieve best accuracy the output signal should be at least 50 % of the used

sensor’s measuring range.

Refer to 10 Sensor accuracies on page 15.

Setting the output to 0..1 mbar when using a sensor range of -10..10 will extremely

decrease the accuracy.

Display

Values

Information

SET

Button ▼ and ▲

Unit and range of the pressure display

The unit defines the decimal point position as well as the display range.

Depending on the sensor range some units may not be visible.

bar

mbar

Pascal

hecto Pascal

PSI

Torr (= mmHg)

Output type

Voltage output (0 … 10 V)

Current output (4 … 20 mA, factory default)

Output zero point (low value)

…

Display value for an output value of 4 mA (or 0V)

(Factory default: Lower measuring range)

Output scale (high value)

…

Display value for an output value of 20 mA (or 10V)

(Factory default: Upper measuring range)

Output in case of an error

Output is <= 3,6 mA / 0V (factory default)

Output is >= 21 mA / 10,5 V

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