DIFFERENTIAL-PRESSURE MEASURING ASSEMBLY HAVING EFFECTIVE-PRESSURE LINES AND METHOD FOR DETECTING PLUGGED EFFECTIVE-PRESSURE LINES

摘要

The invention relates to a differential-pressure measuring assembly comprising a differential-pressure measuring transducer (10) for detecting the difference between a first media pressure and a second media pressure and for providing a differential-pressure measurement signal that depends on the difference between a first media pressure and a second media pressure; a first effective-pressure line (25), which is connected to a first pressure inlet (12) of the differential-pressure measuring transducer (10) in order to apply the first media pressure to the differential-pressure measuring transducer; a second effective-pressure line (26), which is connected to a second pressure inlet (13) of the differential-pressure measuring transducer (10) in order to apply the second media pressure to the differential-pressure measuring transducer; at least one temperature sensor (30) for outputting a temperature signal that correlates with a temperature of the effective-pressure lines (25, 26); and a processing unit (14) for processing the differential-pressure measurement signal and the temperature signal; wherein the processing unit is designed to detect a significant correlation between a change in the temperature signal and the differential-pressure signal on the basis of the differential-pressure measurement signal and the temperature signal, and to assess the detection of a significant correlation as an indication of a plugged effective-pressure line.