GMH Series robust portable high precsion manometers for measuring differential gauge and vacuum. Wide range of applications with high accuracy. Tough ABS casing. Applications include Gas flow measurement Tank level monitoring Laboratory/Chemical/Pharmaceutical, Engineering, Environmental, HVAC, Maintenance, Diagnostics, leak checking. Built in data logger an recorded data on the fly or be programmed for automatic data collection. Eight different ranges to choose from see below. The image shows a differential manometer with two input connections. The absolute pressure version has only one input and will normally show atmospheric pressure in the absense of an input. (The absolute pressure reading can be compensated to sea level )
Functions | Pressure difference, Tare (zero) function, Hold function, Min/Max Alarm, Averaging, data logging, Peak value memory, real time clock. |
Pressure units | Selectable, mbar, bar, kPa, MPa, mmHg, PSI, m H2O |
Measuring rate | slow: 4 meas./sec (ConF-Rate = Slow) |
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 direct contact with water – use air buffering) |
Connection | 2 (1) 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. |
Keypad | Membrane keypad 6 buttons |
Data Logger | Store data at push of a button, or programmable in intervals of 1 to 3600 seconds, maximum of 10000 data sets |
Output | Analogue output 0-1 volt scaleable |
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, 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 |
Power consumption | 0.6 mA |
Low Battery Warning | ' bAt ' |
Operating Conditions | -20 ... +50 °C, 0 ... 95 %RH (not condensing) |
Storage Temp | -20 ... +70 °C |
Housing | Impact resistant ABS |
EMC | 2004/108/EG |
Model | 3181-002 | 3181-001 | 3181-07H | 3181-07 | 3181-07B | 3181-13 | 3181-13MB | 3181-12 |
Range mBar | –5.000 to +5.000 | -1 to +25 |
-1 to +70 | -10 to +350 | -10 to +420 | -100 to +2000 | -1000 to +2000 | 0-1300 Absolute |
Resolution mBar | 0.001 | 0.01 | 0.01 | 0.1 | 0.1 | 1 | 1 | 1 |
Accuracy | ±0.3 % FS | ±0.3 % FS | ±0.1 % FS | ±0.2 % FS | ±0.1 % FS | ±0.2 % FS | ±0.2 % FS | ±0.2 % FS |
Max overload | 250 mBar | 100 mBar | 1 Bar | 1 bar | 1 Bar | 4 bar | 4 Bar | 4 Bar |
1 Atmosphere equals 14.7 psi = 406.9" H2O = 101,325 Pascals = 1013 mBar