MEASUREMENT TRANSDUCER FOR PROCESS INSTRUMENTATION, AND METHOD FOR MONITORING THE STATE OF ITS SENSOR

摘要

A measurement transducer for process instrumentation includes a sensor for detecting a physical or chemical quantity, where a supply voltage to the sensor is regulated by a cross regulator to a constant value, and the current intensity of the current adjusted by the cross regulator and flowing parallel to the sensor is determined and monitored to maintain a specified criterion in order to detect a sensor error such that error conditions of the sensor can be determined in a particularly simple and effective way.