Oxygen Sensor for Pro O2 Analyzer | 9505


The Nuvair 9505 replacement oxygen sensor is for use with the Nuvair Pro O2 Analyzer.


The Nuvair 9505 is a replacement electrochemical oxygen sensor for gas analyzers. This sensor threads onto the analyzer's front face for increased moisture resistance. Under normal use, oxygen sensors have an expected service life of 36 months. The 9505 replacement sensor fits the following analyzers:

  • Nuvair Pro O2 Analyzer

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 25±2 mV in air at 25°C/77°F, sea level
Electrical Connector Mating plug: Molex (PN 22-28-0021 or 22-28-3021 or 22-23-5024)
Range 0-100% Oxygen
Accuracy ± 1% of full scale at constant temperature and pressure (0-1 atm) when calibrated with 100% oxygen
Sensor Type Electrochemical
Expected Sensor Life 36 months in air at 77°F (25°C) and 50% rh
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 oz (28.3 g)
Application For diving cylinder oxygen verification and other forms of oxygen testing on the surface/above water. Not intended for underwater use.
Warranty 0 – 12 Months Free Replacement
13 – 18 Months 50% Off Replacement
19 – 24 Months 25% Off Replacement