Precision Digital Manometers - Differential and Absolute
with built in data logger and analogue output

digital manometer
  • Differential manometer, built in sensor
  • Selectable units mbar, bar, kPa, MPa, mmHg, PSI, mm H2O
  • Data Logging
  • Analogue Output
  • Several Models cover wide range
  • Absolute pressure version 1300 mBar
  • High Speed Sampling
  • Alarms
  • Intrinsically Safe Ex option
  • Digital Interface USB connection
  • Portable battery powered
  • Auto switch off power saver
  • Backlit LCD Display
  • Calibration Certificate
  • ISO quality assurance
  • 2 year warranty

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. 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 )

Common Specifications

Functions Pressure difference, Tare (zero) function, Hold function, Min/Max Alarm, Averaging, data logging, Peak value memoryy
Pressure units Selectable, mbar, bar, kPa, MPa, mmHg, PSI, m H2O
Measuring rate

slow: 4 meas./sec (ConF-Rate = Slow)
fast: >1000 meas./sec (ConF-Rate = FASt and P.dEt)

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

Ordering Information

Model Price each Order Online
3181-001, 002 $589.00
3181-07B, 07H $638.00
3181-12, 07, 13 $549.00
3181-13MB $570.00  
Ex option intrinsically safe add "EX" to part number - additiional price $275.00  
Serial interface adapter $95.00