PROCESS DEVICE WITH DIAGNOSTICS OF STEADY CURRENT Russian patent published in 2009 - IPC G01R31/28 

FIELD: physics, measurement.

SUBSTANCE: suggested invention is related to process devices of the type used in industrial processes, namely to diagnostics of such process devices. Suggested process device for application in industrial process control system comprises electric connection arranged with the possibility to connect to process control circuit, output circuit arranged with the possibility to transfer data along process control circuit, detector of steady current arranged with the possibility to measure consumption of steady current that is supplied to process device, comparison device arranged so that it may compare measured steady current to basic value of steady current, and diagnostics circuit arranged with the possibility to determine diagnostic condition of process device on the basis of comparison of measured steady current and basic value of steady current, at that basic value of steady current changes depending on mode of process device operation or depending on temperature. Specified device realises appropriate method of diagnostics.

EFFECT: provision of possibility to define or predict diagnostic condition of process measuring transducer depending on value of steady current.

36 cl, 4 dwg