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Appendix: Oxygen Analyzer
The Oxygen Analyzer is designed to be mounted on a suitable clip in a general purpose area. It is not
suitable for installation in a hazardous area though it may be mounted outdoors if the temperature range does not
exceed the 5-45°C for which it is rated.
Do not mount it close to sources of electrical interference such as large transformers, motor start
contactors, relays etc. Also avoid subjecting it to significant vibration.
Avoid mounting it in such a way that it will be subject to rapid temperature changes. For example, do not
mount it close to an outside door or air conditioning duct that will allow a sudden draft of cold or hot air to blow
on it.
Maintenance
The oxygen probe is virtually maintenance free other than for periodic calibration and periodical sensor
replacement.
Periodic Calibration
The probe system should be calibrated about once every three weeks to obtain the best accuracy. The
sensor typically declines in sensitivity by about 1% per month, so a three weekly calibration is usually satisfactory.
Use in a particularly aggressive environment may degrade the sensor faster: in this case calibrate more often.
O2 Sensor Replacement - Cautions
Electrochemical O2
sensor’s replacement
should be done on a regular schedule, every 9 months, rather
than as a response to a dead sensor.
