Sierra video explores in-situ thermal flow meter calibration
11 Sep 2017
Sierra has produced a new video which reviews in-situ calibration validation and suggests how the DrySense sensor stability found in the company’s thermal flow meters is the ‘only way a calibration validation is actually valid’.
When evaluating thermal mass flow meters for in-situ calibration validation capability, be aware that sensor drift will create false-positives that reduce the reliability of the validation, says the company. The assumption by all manufacturers, including Sierra, is that their sensor does not drift.
Only with sensor stability can users truly validate a thermal mass flow sensor’s factory-calibrated accuracy in the field, adds Sierra. A user must ensure that the thermal mass flow meter has a drift-free, dry sensor, which has no organics and cements that drift over time.
Sierra has also produced an in-situ calibration validation white paper, building on this video by reviewing five in-situ calibration validation approaches and showing how each method has varying cost and complexity.