How often do you need to calibrate or maintenance O2 sensors?
If you are using an electrochemical sensor, you will need to calibrate the unit every 2 to 3 months and replace the unit every year or every other year.
PureAire oxygen sensors do not require the typical calibration like the electrochemical sensors, and they last significantly longer than other O2 monitors to save you thousands over the lifetime of the unit.
PureAire’s sensors calibrate themselves through a unique process, where the sensor is exposed to 99.9 percent nitrogen, known concentration, or oxygen reducing gas which pushes the level below 20.9 percent before it quickly recovers. This happens with no trigger from you. However, you should check the sensors every 6 or 12 months to verify that the unit is working properly. Verification is easy and instructions are provided with every sensor. If your sensor needs an adjustment, you can use the menu under the settings to do so.