Oxygen Sensor Replacement | 9507M


The Nuvair 9507M replacement oxygen sensor is for use with the Nuvair Pro O2 Alarm (both handheld and panel mount models) oxygen analyzer and Nuvair Pro Trimix gas analyzer.


The Nuvair 9507M is a replacement electrochemical oxygen sensor for gas analyzers. The 9507M replacement sensor fits the following analyzers:

  • Nuvair Pro O2 Alarm - Handheld
  • Nuvair Pro O2 Alarm - Panel Mount
  • Nuvair Pro Trimix, sold after 05/2013

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.


Output 8-13 mV in air at 25°C/77°F, sea level
Electrical Connector Mating plug: Molex (PN 22-01-3037 or 22-01-2037)
Range 0-100% oxygen (max), 0-1% oxygen (min)
Accuracy ±1% of full scale at constant temperature and pressure (0-1 atm) when calibrated with 100% oxygen
Sensor Type Electrochemical
Expected Sensor Life 12 Months – 100% Parts and Labor
13-18 Months – 50% Sensor Only
19 – 24 Months – 25% Sensor Only
External Thread Size M 16X1
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)
Humidity 0-99% rh (non-condensing)
Weight 1.2 oz (32 g)
Application For surface/above-water diving cylinder verification applications; not intended for underwater use.
Warranty 0 – 12 Months Free Replacement
13 – 18 Months 50% Off Replacement
19 – 24 Months 25% Off Replacement

*Orders for this part may be subject to delay.