GHM GREISINGER RS PRO RS MH 3161-002-ex User manual

H61.0.RS.6C-04
Operating Manual
EN
RS MH 3161-002 - ex RS Stock number: 205-1446
RS MH 3161-13 - ex RS Stock number: 205-1444
device without case
device in leather case
(ready for use in Ex-Zone)
rspro.com

page 2 of 14 Operating Manual RS MH 3161-… - ex H61.0.RS.6C-04
CONTENTS
1GENERAL NOTE....................................................................................................................................3
2SAFETY..................................................................................................................................................3
2.1 INTENDED USE....................................................................................................................................3
2.2 SAFETY SIGNS AND SYMBOLS...............................................................................................................3
2.3 SAFETY GUIDELINES............................................................................................................................4
3PRODUCT SPECIFICATION ..................................................................................................................5
3.1 SCOPE OF SUPPLY ..............................................................................................................................5
3.2 OPERATION AND MAINTENANCE ADVICE................................................................................................5
4HANDLING .............................................................................................................................................6
4.1 DISPLAY.............................................................................................................................................6
4.2 BASIC OPERATION ..............................................................................................................................6
4.3 CONNECTIONS....................................................................................................................................7
4.4 POP-UP CLIP.......................................................................................................................................7
5START OPERATION ..............................................................................................................................8
6CONFIGURATION ..................................................................................................................................8
7REMARKS TO SPECIAL FEATURES....................................................................................................8
7.1 POWER OFF TIME................................................................................................................................8
8OUTPUT..................................................................................................................................................9
8.1 SERIAL INTERFACE..............................................................................................................................9
9INPUT ADJUSTMENT ............................................................................................................................9
9.1 ZERO DISPLACEMENT SENSOR ('OFFS') ..............................................................................................9
9.2 SCALE CORRECTION SENSOR ('SCAL')................................................................................................9
10 PRESSURE CONNECTION...............................................................................................................10
10.1 DEVICE TYPE WITH RELATIVE PRESSURE .........................................................................................10
11 ERROR AND SYSTEM MESSAGES.................................................................................................10
12 SPECIFICATION................................................................................................................................11
13 RESHIPMENT AND DISPOSAL ........................................................................................................12
13.1 RESHIPMENT.................................................................................................................................12
13.2 DISPOSAL INSTRUCTIONS ...............................................................................................................12
14 CONTACT ADDRESS .......................................................................................................................12
15 EC-TYPE EXAMINATION CERTIFICATE..........................................................................................13

H61.0.RS.6C-04 Operating Manual RS MH 3161-… - ex page 3 of 14
1 General Note
Read this document carefully and get used to the operation of the device before you use it. Keep this
document within easy reach near the device for consulting in case of doubt.
Mounting, start-up, operating, maintenance and removing from operation must be done by qualified,
specially trained staff that have carefully read and understood this manual before starting any work.
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.
The manufacturer is not liable for any costs or damages incurred at the user or third parties because of the
usage or application of this device, in particular in case of improper use of the device, misuse or malfunction
of the connection or of the device.
The manufacturer is not liable for misprints.
2 Safety
2.1 Intended Use
The safety requirements (see below) have to be observed.
The device must be used only according to its intended purpose and under suitable conditions.
Use the device carefully and according to its technical data (do not throw it, strike it, …)
Protect the device from dirt.
2.2 Safety signs and symbols
Warnings are labeled in this document with the followings signs:
DANGER
Caution!
This symbol warns of imminent danger, death, serious injuries and
significant damage to property at non-observance.
Caution!
This symbol indicates a potentially dangerous situation in explosion-
prone areas that can result in death or severe injuries if not avoided.

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.

page 4 of 14 Operating Manual RS MH 3161-… - ex H61.0.RS.6C-04
2.3 Safety guidelines
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.
1.
Consider the operating instructions and the regulations referring the use of electrical
equipment for hazardous areas (e.g. VDE0165)
2.
The operation in Ex-Zone is only allowed in the accompanying leather case!
3.
Only the usage of approved batteries is allowed!
Battery exchange must only be made outside of the hazardous area!
Approved batteries are:
Battery type
Manufacturer
Battery name
6F22
GP
GREENCELL , 9V (1604G)
6LF22
or
6LR61
or
6LP3146
GP
SUPER Alkaline, 9V (1604A)
Duracell
DURACELL PLUS, Alkaline, 9V
Varta
powerone alkaline, 9V (No. 4122)
Varta
INDUSTRIAL, Alkaline, 9V (No. 4022)
4.
Mains operation: only use power supply’s of the type GNG 10/3000!
The operation with external power supply is not allowed in ex Protection-Zone!
5.
Only use interface converters of the type GRS 3100, USB 3100, USB 3100 N and GRS 3105!
The operation of serial interface is not allowed in Ex Protection-Zone.
6.
Potential equalisation:
All components (pressure sensor, power supply unit, interface, etc.) connected to the device
must be on the same potentials! If this is not guaranteed, you have to connect them for a
potential equalisation.
7.
Ambient conditions:
Take care that the device is not exposed to environments that make the intrusion of humidity,
water, conducting liquids or dust possible.
8.
DANGER
Trouble-free operation and reliability of the device can only be guaranteed if the device is not
subjected to any other climatic conditions than those stated under "Specification".
If the device is transported from a cold to a warm environment condensation may cause in a
failure of the function. In such a case make sure the device temperature has adjusted to the
ambient temperature before trying a new start-up.
9.
DANGER
If there is 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.
10.
DANGER
When connecting the device to other devices the connection has to be designed most
thoroughly as internal connections in third-party devices (e.g. connection GND with protective
earth) may lead to undesired voltage potentials that can lead to malfunctions or destroying of
the device and the connected devices.

H61.0.RS.6C-04 Operating Manual RS MH 3161-… - ex page 5 of 14
11.
DANGER
Do not use these products as safety or emergency stop devices or in any other application
where failure of the product could result in personal injury or material damage.
Failure to comply with these instructions could result in death or serious injury and material
damage.
12.
DANGER
This device is not constructed for use in medical applications.
13.
Non intrinsically safe use:
The devices can also be used as non intrinsically safe device for connection of non intrinsically
safe devices (i.e. power supply unit, interface converter, etc.).
Only approved accessories must be used at this operation mode, too!
Before the device is used as intrinsically safe device again, you have to check for visible
damages and control functionality before you put it to the leather bag!
14.
Any changes or repair of the device is not allowed.
Please return device to manufacturer for repair or maintenance.
3 Product Specification
3.1 Scope of supply
The scope of supply includes:
Measuring device with 9V battery
Operation manual
Leather case
3.2 Operation and maintenance advice
1. Battery operation:
If ‘bAt’ is shown in the lower display the battery has been used up and needs to be replaced. However,
the device will operate correctly for a certain time. If ‘bAt’ is shown in the upper display the voltage is too
low to operate the device; the battery has been completely used up.
The battery has to be taken out, when storing device above 50 °C.
We recommend taking out battery if device is not used for a longer period of time.
After recommissioning the real-time clock has to be set again.

page 6 of 14 Operating Manual RS MH 3161-… - ex H61.0.RS.6C-04
4 Handling
4.1 Display
1
Main display: shows actual value
2
Arrow points to the chosen measuring unit
3
Secondary display: shows min./max. or hold value
4
SL: appears if sea-level-correction is activated
(only at devices with absolute pressure sensor)
5
Tara: appears if tara-function is activated
6
Not used
4.2 Basic Operation
On / Off
+
min/max measuring:
press short: shows the min./max. value
press again: hides min./max. value
press 2 sec.: clears particular value
Tara, zero-point adjustment:
press short: display will be set to 0
The following measuring will be relatively
displayed to the set tara value
press 2 sec.: deactivates tara-function
press 5 sec.: Zero-Point Adjustment1)
Set/Menu:
press short: invokes configuration menu
Store/Quit:
press short: hold-function, the last measuring value will
be held in the secondary display.
press again: hides the value
Please Note: Activating/deactivating tara clears the max- & min-memories.
1) Zero-Point Adjustment: If there is no pressure or zero-pressure (absolute) applied to the pressure ports the
device will display 0. If there is a permanent deviation (and device is operated
under steady conditions), a permanent zero point adjustment can be carried out. To
carry out the adjustment press button 3 for approx. 5 seconds (Auto Null will be
displayed shortly). The adjustment is done via the OFFSET-value of the sensor
(referring configuration menu).
To recall the manufacturer’s calibration press button 3 for approx. 15 seconds.
Please note: - A zero-point adjustment can only be carried out if the difference between the value on display
is less than 500 digits!
-If a zero point adjustment was carried out the display shows ”Corr” after a restart .

H61.0.RS.6C-04 Operating Manual RS MH 3161-… - ex page 7 of 14
4.3 Connections
Interface: Connection for el. Isolated interface adapter
(please refer to chapter 8.1)
Connection for pressure tubes:
„+“ higher pressure
„-“ lower pressure
Power supply: the mains adapter socket is located at the left side of the device.
4.4 Pop-up clip
Handling:
•Pull at label “open” in order to swing open the pop-up clip.
•Pull at label “open” again to swing open the pop-up clip further.
Pop-up clip closed
Pop-up clip at position 90°
Pop-up clip at position 180°
Function:
• The device with a closed pop-up clip can be plainly laid onto a table or attached to a belt, etc.
• The device with pop-up clip at position 90° can be set up on a table, etc.
• The device with pop-up clip at position 180° can be suspended from a screw.
Device attached to a belt
Device set up on a table
Device suspended

page 8 of 14 Operating Manual RS MH 3161-… - ex H61.0.RS.6C-04
5 Start Operation
Connect sensor, turn on device via key.
After segment test the device displays some configuration:
•If a zero point adjustment was carried out the display shows shortly „nuLL Corr“.
After that the device is ready for measuring.
6 Configuration
To change device settings, press Menu (key 4) for 2 seconds. This will call the configuration menu.
Pressing key Menu jumps between the parameters.
The parameters can be changed with (key 2) or (key 5).
Quit (key 6) finishes the configuration and returns to standard measuring operation.
Parameter
Value
Description
‚Menu‘
or 
mbar, bar, …
Unit: Unit of display
1 … 120
Auto Power Off time in minutes
oFF
Auto Power Off deactivated
01, 11 … 91
Base address of interface
OFFS
refer to list below
The offset of sensor will be displaced by this value to compensate for
deviations in the probe or in the measuring device.
oFF
Zero displacement inactive (=0.00)
SCAL
-2.000 … 2.000
The measuring scale of sensor will be changed by this factor [%] to
compensate deviations of temperature probe or measuring device
oFF
Scale correction factor inactive (=0.000)
Device type
adjustable offset
RS MH 3161-002 - ex
-50.0 ... 50.0 Pa
RS MH 3161-13 - ex
-500 ... 500 mbar
7 Remarks To Special Features
7.1 Power off Time
If there won’t be pressed any key and no interface communication takes place for the time of the power off
time setting (P.Off), the device will be switched off automatically to save battery power.
If P.oFF = oFF then the automatic switch off is deactivated.
MPaPa
bar
mbar kPa
Tara AL LoggSLPSI
mbar
MPa
Pabar
mbar kPa
Tara AL LoggSL
PSI
MPaPa
bar
mbar kPa
Tara AL LoggSL
PSI
mbar

H61.0.RS.6C-04 Operating Manual RS MH 3161-… - ex page 9 of 14
8 Output
8.1 Serial Interface
By means of the serial interface and a suitable electrically isolated interface adapter (USB 3100, USB 3100 N,
GRS 3100 or GRS 3105) the device can be connected to a computer for data transfer.
With the GRS 3105 up to 5 devices of the GMH3xxx- series can be connected to one interface (see also
manual of GRS 3105). As a precondition the base addresses of all devices must not be identical, make sure
to configure the base addresses accordingly (refer menu point “Adr.” in chapter 6).
To avoid transmission errors, there are several security checks implemented e.g. CRC.
The following standard software packages are available:
GMHKonfig: Software for a comfortable editing of the device (e.g. Material selection…)
EBS 20M / 60M: 20-/60-channel software to display the measuring values
In case you want to develop your own software we offer a development package including:
a universally applicable Windows functions library ('GMH3000.DLL') with documentation that can be
used by the most programming languages. Suitable for Windows XP™, Windows Vista™, Windows 7™
Programming examples Visual Basic 4.0™, Delphi 1.0™, Testpoint™
Note: The measuring and display range values read back from the interface are always in the
selected measurement unit (mbar, bar...)!
Supported functions:
Code
Name/Function
Code
Name/Function
0
Read measurement value
200
Read min display range
3
Read system state
201
Read max display range
6
Read min memory
202
Read display range - unit
7
Read max memory
204
Read display range –decimal point
12
Read ID number
208
Read # of channels
174
Clear min memory
214
Read scale adjustment [%]
175
Clear max memory
216
Read offset adjustment
176
Read min measuring range
222
Read power off time (Conf-P.oFF)
177
Read max measuring range
223
Set power off time (Conf-P.oFF)
178
Read measuring range –measuring unit
240
Reset
179
Read measuring range –decimal point
254
Program version
180
Read kind of measuring of sensor
199
Read kind of measuring of display
9 Input Adjustment
9.1 Zero Displacement Sensor ('OFFS')
A zero displacement can be carried out for the measured value:
value displayed = value measured - offset
Standard setting: 'off' = 0.0°, i.e. no zero displacement will be carried out. Together with the scale correction
(see below) this factor is mainly used to compensate for sensor deviations. Input is in the display unit.
9.2 Scale Correction Sensor ('SCAL')
The scale of the measuring can be influenced by this setting (factor is in %):
displayed value = measured value * (1+Scal/100)
Standard setting: 'off' =0.000, i.e. value is not corrected. Together with the zero displacement (see above)
this factor is mainly used to compensate for sensor deviations.

page 10 of 14 Operating Manual RS MH 3161-… - ex H61.0.RS.6C-04
10 Pressure Connection
2 universal pressure connector for 6 x 1 mm (4 mm tube inner diameter) or 8 x 1 mm (6 mm tube inner
diameter ) plastic tubes.
10.1 Device type with relative pressure
For measurements of overpressure (refer to summary):
Connect plastic tube to pressure port "+".
Port "-" will not be used!
For measurements of underpressure (refer to summary):
Plug the tube to pressure port "-". The measuring range covers then up to max. overpressure range
Note: All values are displayed now as positive values. No minus sign will be shown.
Example: it is possible to measure under pressure down to -25.00 mbar, the display shows then
the value 25.00 (no minus sign).
For measurements of pressure differences:
Connect both plastic tubes to pressure port "+" and "-"; make sure to apply higher pressure to port "+".
Measure ranges:
device type
over- or under pressure
under pressure
RS MH 3161-002 - ex
-500.0 … 500.0 Pa
---
RS MH 3161-13 - ex
-1000 … 2000 mbar
-2000 … 0 mbar
11 Error And System Messages
Display
Meaning
What to do?
Low battery power, device will only continue
operation for a short period of time
Replace battery
Battery empty
Replace battery
Mains operation without battery: wrong voltage
Check power supply, replace it when
necessary
No display or
confused
characters,
device does
not react on
keypress
Battery empty
Replace battery
Mains operation without battery: wrong voltage
or polarity
Check power supply, replace it when
necessary
System error
Disconnect battery and power supplies,
wait shortly, then reconnect
Device defective
Return to manufacturer for repair
Err.1
Measured value above allowable range
Check: pressure above max. range?
-> measuring value to high
Sensor defective
Return to manufacturer for repair
Err.2
Measured value below allowable range
Check: pressure below min range?
-> measuring value to low
Sensor defective
Return to manufacturer for repair
Err.4
Value is too low to be displayed, tara is set
Check: display below -2000 (tara?)?
Err.9
Measured value far out of allowable range
Check: pressure not within sensor range?
Err.7
System error
Return to manufacturer for repair

H61.0.RS.6C-04 Operating Manual RS MH 3161-… - ex page 11 of 14
12 Specification
RS MH 3161-002 - ex
RS MH 3161-13 - ex
Measuring ranges: 1)
-500.0 … 500.0 Pa
(-5.000 … 5.000 mbar)
-1000 … 2000 mbar
Overload: 2) (max.)
max. 250 hPa (mbar)
max. 4 bar
Resolution:
0.1 Pa (0.001 mbar)
1 mbar
Accuracy: (typ.)
Hysteresis and linearity
±0.3 % FS
±0.2 % FS
temp. depending 0 - 50 °C
±0.4 % FS
±0.4 % FS
Available units:
mbar, Pa, kPa, mmHg,
PSI, m H
2
O
mbar, bar, kPa, MPa,
mmHg, PSI, m H
2
O
1) underpressure measurement up to the overpressure measuring range suitable (refer chapter 10.1)
2) without destruction or recalibration of sensor being necessary
Pressure units: selectable
Measuring rate: 4 meas./sec.
Nominal temperature: 25°C
Sensor: Piezo-resistive relative pressure sensor integrated in device.
Suitable for air and non-corrosive and non-ionizing gases and liquids.
(Not suitable for water –use air buffering)
Connection: 2 metal pressure ports for connection to 6 x 1 mm (4 mm inner tube Ø) or
8 x 1 mm (6 mm inner tube Ø) tubes at the top of device
Display: 2 four digit LCDs (12.4 mm high and 7 mm high) for measuring values, and for min/
max memories, hold function, etc. as well as additional functional arrows.
Pushbuttons: 6 membrane keys
Output: 3.5 mm audio plug, stereo
Interface: Serial interface (3.5mm jack) can be connected to USB or RS232 interface of a PC
via electrically isolated interface adapter USB 3100, USB 3100 N, GRS 3100 or
GRS 3105 (see accessories).
Power supply: 9V battery (included in scope of supply)
as well as additional d.c. connector (diameter of internal pin 1.9 mm) for external
10.5-12V direct voltage supply. (suitable power supply: GNG10/3000)
Power consumption: ~ 0.6 mA
Low battery warning: ' bAt '
Working conditions: -10 ... +50 °C, 0 ... 95 %RH (not condensing)
Storage temperature: -20 ... +70 °C
Housing: impact-resistant ABS, membrane keyboard, transparent panel, Front side IP65
Dimensions: 142 x 71 x 26 mm (L x W x D) + metal pressure ports 16 mm at top of device
Weight: approx. 165 g (incl. case)
Directives / standards: The instruments confirm to following European Directives:
2014/30/EU EMC Directive
2014/34/EU ATEX
2011/65/EU RoHS
_
+

page 12 of 14 Operating Manual RS MH 3161-… - ex H61.0.RS.6C-04
Applied harmonized standards:
EN 61326-1 : 2013 emissions level: class B
emi immunity according to table 3 and A.1
Additional fault: <1%
EN IEC 60079-0 : 2018
EN 60079-11 : 2012
EN IEC 63000 : 2018
13 Reshipment and Disposal
13.1 Reshipment
All devices returned to the manufacturer have to be free of any residual of measuring media
and other hazardous substances. Measuring residuals at housing or sensor may be a risk for
persons or environment
Use an adequate transport package for reshipment, especially for fully functional devices.
Please make sure that the device is protected in the package by enough packing materials.
13.2 Disposal instructions
Batteries must not be disposed in the regular domestic waste but at the designated collecting
points.
The device must not be disposed in the unsorted municipal waste! Send the device directly to
us (sufficiently stamped), if it should be disposed. We will dispose the device appropriate and
environmentally sound.
WEEE-Reg.-Nr.: DE 93889386
14 Manufacturer address
GHM Messtechnik GmbH
Standort Greisinger
Hans-Sachs-Straße 26
93128 Regenstauf
Germany
15 Vendor contact address
RS Components Limited
Birchington Road
Corby
Northamptonshire
NN17 9RS

H61.0.RS.6C-04 Operating Manual RS MH 3161-… - ex page 13 of 14
16 EC-Type Examination Certificate

page 14 of 14 Operating Manual RS MH 3161-… - ex H61.0.RS.6C-04
17 EU-Declaration of conformity