Active Wide Range Gauge WRG

  • Description
  • Specification
  • Technical parameters
  • Applications


The Wide Range Gauge (WRG) family offers the capability of single port pressure measurement in the range atmosphere to 10-9 mbar, with a linear output. It’s a compact solution, halving the space and connectivity hardware requirement, which can be all important in many applications. The WRG has many novel features, including a patented striker, push-button calibration and set point controls and comprehensive diagnostics. The WRG is a costeffective vacuum management solution when used either with an Edwards controller or directly integrated into the vacuum system controls.


• Single push-button atmosphere setting
• Ultra compact, featuring recessed electrical connector
• Easy service; both Pirani and magnetron elements are individually replaceable
• Low magnetic field version (SL) available for particularly sensitive applications e.g. mass spectrometry and microscopy
• Comprehensive failure mode diagnostics facility
• Compatible with Edwards TIC, TAG and ADC controllers
• D-type version including cable strain relief and enhanced ingress protection (IP44)
• Magnetron uses an advanced technique for highly reliable striking, even at high vacuum or in relatively contaminated conditions
• Automatic vacuum setting of Pirani gauge element
• Easily programmed set point covering entire measuring range
• Extended service intervals and gauge lifetime, through reduction of HT voltage after ignition and low discharge current
• Microprocessor signal processing gives seamless transition between Pirani and magnetron outputs as well as linear output (log pressure scale)

Technical parameters

Pressure rangeAtmosphere to 10-9 mbar/Torr
Accuracy *Typically ±15% <100 mbar and ±30%<10-3 mbar
Maximum over pressure6 bar absolute (87 psia)
Power supply+14.5 to +36 V d.c.
Power consumption2 W maximum
Output signal1.8 to 10.2 V d.c.
AdjustmentsAtmosphere and setpoint
Set pointOpen collector transistor
Maximum voltage40 V d.c.
Current100 mA maximum
Temperature range
Operating+5 to +60 oC
Storage0 to +70 oC
Materials exposed to vacuum (Both NW and CF versions)Stainless steel (AISI 304, 316, 321, 347), Fluoroelastomer, soda lime glass, Tungsten, trace of Nickel and Nickel Iron
Internal volume26 cm3
Weight0.8 kg
External interface connector8-way FCC68 / RJ45 Socket
Interface cablesUse range of active gauge cables
Electromagnetic compatibilityEN 61326 Industrial Location, Class B emissions
Enclosure ratingIP40


* Accuracy is reduced at the limits of the measuring range.


Ultra high vacuum
High vacuum
Medium vacuum
Low vacuum
Vacuum range: 10-9 – 10 mbar