Pro He Alarm Analyzer - Panel Mount

The Nuvair Pro He Alarm panel mount analyzer measures helium in a mixed gas. Includes two user-set audible and visual alarms for high and low helium percentages, and an analog output for automatic compressor shutdown (with optional relay). Compatible with heliox and trimix.


Designed for installation on a control panel or other flat surface, the Nuvair Pro O2 panel mount alarm analyzer measures helium levels in mixed gases. Two audible and visual alarms for low and high helium content can be set by the user. If the alarm sounds, the analog output can activate an optional relay that shuts down compressors automatically, sounds a remote alarm, or activates an emergency backup system. Does not require calibration. Can be used as a continuous reading analyzer while mixing gas.

PLEASE NOTE: Never expose gas sensors to pressure or you may cause damage and/or false readings. Damaged sensors will not provide accurate gas analysis. Inaccurate gas analysis can lead to serious personal injury or death. Most gas analyzers can be used to analyze a regulated gas sample flow, the contents of a gas cylinder, or the flow from a regulator. The flow rate of gas must equal 1-5 L/min. To produce this flow, a Flow Restrictor and Regulator may be required.


  • LCD display
  • Auto switch off setting
  • Fast response
  • Made to test breathing gases
  • Easy to operate, reliable and accurate
  • Long life thermal conductivity sensor
  • Display range of 0.0-100%
  • Low battery warning indicator
  • Two (2) custom audible and visual alarms
  • 4-20 mA analog output for external devices
  • Capable of shutting down compressor at set threshold alarm


Ful Scale Resolution (FSR) ±2% over full scale
Display Accuracy ±2%
Humidity Range 0-90% rh, non-condensing
Response Time <10 seconds for 90% of final value
Operating Temperature Range 41-104°F (5-40°C)
Storage Temperature Range 5-122°F (-15 to 50°C)
Power Requirements 7.4 V Lithium or Optional 110/230 V Electric
(L x W x H)
5.5 x 4 x 2 in
(14 x 10 x 5 cm)
Warranty One year