Graduation of the Instrument Transducers with Integrated Pick-Ups

Abstract

The successful operation of a modern production facility is impossible without the omnipresent use of information measuring systems. In turn, the data capacity of the latter is largely determined by the metrological characteristics of the physical quantities measuring transducers used and, in particular, by the minimal additional errors from the various influencing factors. Widely used semiconductor sensors are characterized by the integrated type pick-ups, therefore, they are sensitive to a whole range of influencing physical quantities. Some of them are natural input or measured quantities of measuring transducers, and the rest are interferences or influencing quantities in relation to the primary ones and determine additional errors. A multifactorial graduation experiment is necessary in order to obtain the measuring transducer conversion function for the measured quantities and correct the influence of additional errors. It involves the transducer influenced by various combinations of metrologically provided and time-stabilized measured and influencing quantities and the subsequent construction of the conversion function mathematical model. In practice, situations often arise when it is impossible to stabilize and accurately set or measure the influencing factor. For such case, the article includes a theoretical justification and practical possibility testing of conducting a graduation experiment without influencing factors stabilization and measurement. The proposed approach to the graduation of measuring transducers with an integrated pick-up enables to increase their resistance to the influencing factors in the entire operational range and reduce the corresponding additional errors.