User’s Manual GMH 3181-… H61.0.3X.6C-01 page 3 of 16 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.
User’s Manual GMH 3181-… H61.0.3X.6C-01 page 4 of 16 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: _DANGER - there is visible damage to the device - the device is not working as specified...
User’s Manual GMH 3181-… H61.0.3X.6C-01 page 5 of 16 4 Handling 4.1 Display Main display: shows actual value Arrow points to the chosen measuring unit Secondary display: shows min./max. or hold value SL: appears if sea-level-correction is activated (only GMH 3181-12) Tara: appears if tara-function is activated Logg: appears if logger function is chosen, flashes while logger is running...
User’s Manual GMH 3181-… H61.0.3X.6C-01 page 6 of 16 4.3 Connections Output: Connection for el. Isolated interface adapter or for analog output (please refer to chapter 9) Connection for pressure tubes: „+“ higher pressure (non-existent at GMH 3181-12) „-“ lower pressure (GMH 3181-12: absolute pressure) Power supply: the mains adapter socket is located at the left side of the device.
User’s Manual GMH 3181-… H61.0.3X.6C-01 page 7 of 16 5 Start Operation Connect sensor, turn on device via key. Store Menu Quit After segment test the device displays some configuration: • If the logger function is not off the time of the integrated clock will shortly be displayed. •...
User’s Manual GMH 3181-… H61.0.3X.6C-01 page 8 of 16 Menu Param. Values Description ‚Menu‘ Set Alarm: Settings Of Alarm Function Alarm on, with horn-sound no.So Alarm on, without horn-sound Alarm deactivated Min alarm rail (not when AL. oFF, Sensor-Min is the lower display range AL.Lo p.r.t.
User’s Manual GMH 3181-… H61.0.3X.6C-01 page 9 of 16 7.1.3 rAtE-FASt: Fast filtered measuring Measuring rate >1000Hz, the value is filtered slightly (higher noise immunity than P.dEt, small peaks will be filtered out), apart from that identical behaviour like P.dEt. 7.2 Sea Level Correction (only for GMH 3181-12 ) The device displays the absolute pressure measured at the sensor.
User’s Manual GMH 3181-… H61.0.3X.6C-01 page 10 of 16 8 Operation Of Logger The device supports two different logger functions: each time when „store“ (key 6) is pressed a measurement will be recorded. „Func-Stor“: „Func-CYCL“: measurements will automatically be recorded each interval, which was set in the logger menu ‚CYCL‘...
User’s Manual GMH 3181-… H61.0.3X.6C-01 page 11 of 16 8.2 „Func-CYCL“: Automatic Recording With Selectable Logger-Cycle-Time The Logger-Cycle-Time is setable (p.r.t. Configuration). For example „CYCL“ = 60: A measuring is recorded after each 60 seconds. When the slow measurement "rAtE-Slo" is chosen, additionally a low power function is available: „Lo.Po“. If „Lo.Po“...
User’s Manual GMH 3181-… H61.0.3X.6C-01 page 12 of 16 9 Output The output can be used as serial interface (for USB 3100, USB 3100 N, GRS 3100 or GRS 3105 interface adapters) or as analog output (0-1V). If none of both is needed, we suggest to switch the output off, because battery life then is extended. 9.1 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.
User’s Manual GMH 3181-… H61.0.3X.6C-01 page 13 of 16 9.2 Analogue Output – Scaling with DAC.0 and DAC.1 Note: Analogue output can not be used during logger recordings With the DAC.0 and DAC.1 values the output can be rapidly scaled to your efforts. Keep in mind not to connect low-resistive loads to the output, otherwise the output value will be wrong and battery life is decreased.
User’s Manual GMH 3181-… H61.0.3X.6C-01 page 14 of 16 11 Pressure Connection 2 (or 1) 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. 11.1 Device type with absolute pressure (GMH 3181-12) Connect plastic tube to pressure port.
User’s Manual GMH 3181-… H61.0.3X.6C-01 page 16 of 16 Power supply: 9V battery, type: IEC 6F22 (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: Slow measuring rate: ~ 0.6 mA Fast measuring rate: <...
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