ULVAC Vietnam Representative Office

General Purpose Type Pirani Gauge GP-G Series

This series is a pirani vacuum gauge utilizing heat conduction of a gas.A platinum wire is used, therefore, the units will not break even at atmospheric pressure.The gauges have a wide range of applications and can easily measure pressures in the low vacuum range. Various types of interlocks and pumping sequence control are available within a set point.


  • Low vacuum region is measured: Constant temperature pirani vacuum gauge that work using the thermal conduction of gas
  • Interchangeable sensor heads: Employs sensor heads from the WP series
  • Corrosion-resistant platinum(Pt) is employed as filament material
  • Vacuum level output signal: Pressure is 0 to 10V Log output
  • Digital output: BCD output (GP-1000G)
  • Serial communication specification: RS232C communication (GP-1000G)
  • Control output signal: Set point 2 pcs available from GP-1GRY/GP-2GR and 3 pcs from GP-1000/GP-2001G/GP-2002G. GP-2002G provides 3 set points.
  • LED Monitor for crisp display: 4.5-digits display (GP-2001G/GP-2002G)


  • Pressure measurement in roughing pumping systems
  • Pressure monitoring in various vacuum pumping systems
  • Interlocks, sequencing, and other control system related functions for practical vacuum equipment
  • Process control of various vacuum equipment


ModelGP1-GRY (A)GP-1GGP-1G with case
Measurable pressure range0.4~2700Pa
Pressure unitPa
Measurement locations1
Accuracy±3% of full scale (linear scale conversion)
DisplayAnalog indication
Sampling time
Measurement value outputDC 0 to 10mV Nonlinear output
Set points2 (AC100V / 0.5A MAX)
Communication serial/Digital output
Operating temperature range10 to 40℃ (50 to 104°F)
Operating humidity range15 to 18% (not condensing)
Power supply voltageAC100 to 240V
Dimension W×D×HController:100×130×100mm100×130×100mm
Meter (A-TYPE):
Controller weightController:1.0kgMeter:0.7kgMeter:1.4kg
Meter (A-TYPE):0.7kg
Detection unit (GP-H):35g
AccessoriesPower cable3m (with controller)
Input / output connector
Quick manual1
OptionsSensor headVarious types of gauge heads including WP-01, 02, 03, 16, and WPB-10-034
Detection unitGP-H, GP-BH special cable (WPB-10-034)
Sensor head cable2, 5, 10, 15, 20, 25, 30, 50, 100m