AlphaSense O2-A3 Oxygen Sensor

The AlphaSense O2-A3 oxygen sensor is a plug-in replacement sensor for hand-held gas detectors that use an O2-A3 sensor.  Verify the sensor you are replacing has AlphaSense O2-A3 printed on the side before ordering. Due to our low prices we cannot accept returns for the wrong sensor. Note: Once an electrochemical (EC) sensor is purchased from Gaslab.com and the sealed packaging is opened or the sensor module is installed, it is no longer eligible for return due to the limited operational lifespan that begins upon activation. Features 0.1 to 20.9% oxygen sensor Does not require calibration Up to 3 year lifespan Small, compact and maintenance free Measurement Range: 0.1-20.9% Oxygen Output @ 20.9% Oxygen: 60-85 uA Output @ 0% O2: < 2.5 uA Response Time: < 15 sec. t90 (s) from 20.9% to 0% Linearity: 0.6% O2 deviation @ 10% Output drift: < 1% change @ 3 months Operating life: > 36 months until 85% original Output of 20.9% Electrical/Mechanical Dimensions (sensor): 17.4mm