Sensor for Legacy Pro CO Analyzer | D-31


The D-31 carbon monoxide (CO) replacement sensor is for legacy Nuvair Pro CO analyzers, built before 2011, without alarm capability. Please check the product number ("type") of your analyzer’s sensor before ordering.

Be careful not to confuse the D-31 replacement sensor with the D-13 oxygen (O2) replacement sensor.


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.