Pro O2 Alarm Analyzer - Panel Mount


Designed for installation on a control panel or other flat surface, the Nuvair Pro O2 panel mount alarm analyzer measures oxygen levels in breathing gas mixtures. Audible and visual alarms for low and high oxygen 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 an alarm, or activates backup systems. Four power options and remote sensor available.


Accurate, stable, and easy to use, the panel mounted Nuvair Pro O2 Alarm Analyzer has two audible and visible alarms that can be set for high and low oxygen content. When the alarm sounds, the analog output activates an optional relay that shuts down compressor automatically, sounds a remote alarm, or switches a surface-supplied diver's breathing gas to an emergency backup system. Designed for installation on a control panel or other flat surface, Nuvair Pro O2 Alarm analyzers are built and tested in-house and come ready to use. Designed for in-line measurement of oxygen in a mixed gas, it is compatible with nitrox, heliox, and trimix.

WARNING: Never expose gas sensors to pressure or you may cause damage and/or false readings. Damaged sensors will not provide accurate gas analysis. 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. A faulty Flow Restrictor can lead to a false analyzer reading. Flow Restrictors should be regularly tested with a Flow Meter. Inaccurate gas analysis can lead to serious personal injury or death.


  • On/Off switch
  • Low battery warning indicator
  • Easy calibration
  • User-replaceable battery and sensor
  • Audible alarm sounds when user-defined low or high O2 percentage is reached
  • 4-20 mA analog output for external devices
  • Analog output can activate optional relay to automatically shutdown compressor when alarm activates
  • Fast response, thermally compensated sensor
  • Completely sealed, water resistant housing
  • Automatic calibration
  • Specifically designed to test breathing gases

Power & Sensor Options

  • 9-volt battery (SKU 9612-B)
  • Remote sensor with 9-volt battery (SKU 9612-B-R)
  • Rechargeable lithium battery (SKU 9612-LB)
  • Wall plug-in [international] (SKU 9612-E)
  • DIN Rail (SKU 9612-DP)

Replacement Sensor


Display Accuracy ±1%
Sensor Type Electrochemical
Expected Sensor Life 36 months in air at 25°C (77°F) and 50% rh
Range 0-100% Oxygen
Response Time <6 seconds for 90% of final value
Operating Temperature 32-104°F (0-40°C)
Storage Temperature 32-122°F (0-50°C)
Operating Humidity up to 100% rh
Power 9-volt battery, wall plug-in, DIN rail, or rechargeable lithium battery
(L x W x H)
5.5 x 4 x 2 in
(14 x 10.1 x 5 cm)