Standard metrics for sensor validation

Loop and unit controllers must respond not only to changes in measurement values but also in measurement quality. The incorporation of digital technology in instrumentation and in communications (with the advent of Fieldbus) makes such integration possible. For cost-effective and widespread application, the key issue is standardisation. Recent developments and research in which a set of suitable metrics have being developed. Demonstration systems ranging from a thermocouple up to a Coriolis mass flow meter.