Precision Digital Manometers - Differential and Absolute

digital manometer
  • Differential manometer, built in sensor
  • Selectable units mbar, bar, kPa, MPa, mmHg, PSI, mm H2O
  • 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, leak checking. 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,
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
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). Via 3.5mm "audio" socket.
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 3161-002 3161-001 3161-07H 3161-07 3161-07B 3161-13 3161-13MB 3161-12
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
3161-001, 002 $425.00
3161-07B, 07H $475.00
3161-12, 07, 13 $395.00
3161-13MB $405.00  
Ex option intrinsically safe add "EX" to part number - additiional price $275.00  
Serial Interface Adapter $95.00