nWRG series Digital Wide Range vacuum gauges offer single port pressure measurement in the range atmosphere to 10-9 mbar. These are new digital versions of gauges that have proved to be rugged and reliable in a wide range of applications ranging from scientific instruments to industrial processes.

Features and benefits

  • Wide-range supply voltage allows operation from 15 to 48 V DC
  • Gauge naming allows user to store gauge identification data
  • Automatic vacuum setting of Pirani gauge element
  • Unique striker design ensures rapid striking even at high vacuum or in contaminating conditions
  • Low external magnetic field version (L) for sensitive analytical instruments available upon request
  • Serial communications based on a simple ASCII, low latency, query and command protocol that can operated in a point to point or multidrop system with minimum overhead
  • Adjustable open collector set-point output for straightforward process control and interlocking
  • NW25 flange for easy connection to vacuum systems - other flange options on request
  • CSA and C/US approved, meets the safety requirements for electrical equipment for measurement
  • RS485 or RS232 versions
  • 9600 to 38400 baud, 8 bits, 1 start bit, 1 stop bit, no parity
Technical data  
Mass NW25 version 0,8 kg
Internal volume 26 cm3
Enclosure rating IP40
Measurement range Atmosphere to 10-9 mbar
Accurancy typically

±15% <100 mbar

±30% <10-3 mbar

Maximum over-pressure 6 bar absolute

Temperature range



Bake-out with electronics removed


5 to 60°C

0 to 70°C


Humidity 80% RH up to 31°C decreasing linearly to 50% RH at 40°C and above
Maximum altitude 3000 m
Electrical supply voltage 15 to 48 V DC nominal
Power consumption 2 W



open collector transistor

48 V DC 100 mA