Sensors & Parts

We stock carbon monoxide (CO), helium (He), and oxygen (O2) replacement sensors for all our current and legacy gas analyzers, such as the Pro O2, Pro CO, Pro He, Pro Trimix, 4 Warn, and O2 Quickstick. We also carry sensors for DE-OX, UBS and OMS analyzers. Click on any of the replacement sensor SKU numbers below and be directed to its product page.

Additional analyzer parts are also listed on this page including the FAILSAFE and SMART START modules for Nuvair Pro Alarm analyzers.

Sensor Quick Reference Guide

Sensor SKU	Compatible Analyzer SKUs	Comments
9501	9603 9604 9621 9621.5 9624 9625 9626.5 9634 9621F 9626-LB 9641-NV	Nuvair Pro CO Alarm series and multigas analyzers with CO sensors. Select the correct sensor for your analyzer: 0-50 ppm or 0-300 ppm. Sensors are not interchangeable.
9505	9450 9462	Nuvair Pro O2 Analyzer.
9506	9452 9460	Nuvair Pro O2 Remote Handheld and Panel Mount oxygen analyzers. Label may read R17S1.
9507	9612R-B 9631	DE-OX ZIP PRO oxygen analyzer, with remote jack 8-13 mV output.
9507M	9602 9603 9604 9611 9612 9609-LB 9641-NV	Nuvair Pro O2 Alarm (both handheld and panel mount models) oxygen analyzer and multigas analyzers with O2 sensors.
9508	Analox Mini O2 DII.	Analox Mini O2 DII.
9510	9456	Nuvair O2 Quickstick, OMS 2, UBS O2 Stick, and Nuvair Pro Trimix. For use in Pro Trimix analyzers sold before 04/2013.
9616-SEN	9602 9603 9604 9615 9616 9617 9635 9609-LB 9641-NV	Nuvair Pro CO2 analyzers.
9638	9627 9628 9608-LB	Replacement sensor and board is for use in single-gas helium analyzers only and are not compatible with multigas sensors. Sensors and boards are calibrated together and cannot be sold separately.
D-13	C-Square	Legacy Nuvair Pro O2 and C-Squared oxygen analyzers with a threaded faceplate insert.
D-31		Legacy Nuvair Pro CO analyzers, built before 2011, without alarm capability
K-EA2	9599-DP 9604 9605 9607 9641	Moisture sensor analyzers.
N-33	AN300	AN300 Portable Nitrogen 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.