I have attempted to use an oxygen analyzer with a paramagnetic sensor to measure 350 ppm oxygen. My readings are all over the place, why?
This dilemma points to the fact that each oxygen measuring technique has its strong points and potential deficiencies. It is incumbent upon manufacturers to fully understand the customer’s application before making a recommendation. In general, paramagnetic sensors do not have the measurement sensitivity to provide accurate and repeatable readings in the low parts per million range. In this case, the paramagnetic sensor was misapplied.
