Replacement Sensor for Legacy Pro CO Analyzer

The D-31 carbon monoxide (CO) replacement sensor is for legacy (pre-2011) Nuvair Pro CO analyzers 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.


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.