Differential pressure measuring device
A differential pressure measurement and differential pressure technology, applied in the field of monitoring differential pressure measurement devices, can solve problems such as blockage of differential pressure pipelines
Active Publication Date: 2021-10-08
EHNDRESS KHAUZER GMBKH KO KG
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Problems solved by technology
During the operation of such measuring devices, the differential pressure line may become clogged, whereby reliable measurements are reduced
Method used
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[0034] In each case, figure 1 with figure 2 An example of an embodiment of an embodiment of the differential pressure measuring device of the present invention includes a differential pressure measurement transducer 10 having a sensor module 11, the sensor module 11 is arranged in the first high pressure. The side process connection flange 12 is between the flange 13; and the electronic module 15, the electronic module 15 has processing and / or evaluation unit 14, the processing and / or evaluation unit 14 remains by the sensor module 11 , Supply energy to the sensor module and process the signal of the sensor module. The electronic module is coupled to the process control system 41 via a double line line 16, wherein the electronic module 15 communicates via a double line line 16 and is energy. Double line 16 can in particular operate on fieldbus according to the fieldbus, the Foundation fieldbus or HART standard. Such differential pressure measuring transducers are known, and by t...
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A differential pressure measurement device comprising: a differential pressure measurement transducer (10) for recording and providing a differential pressure measurement signal, the differential pressure measurement signal being dependent on the first medium pressure and the second medium pressure; a first differential pressure line (25) to provide the first medium pressure to the differential pressure measuring transducer; a second differential pressure line (26) to supply the The pressure difference measurement transducer provides the second medium pressure; at least one temperature sensor (30), the at least one temperature sensor (30) is used to output a temperature signal, and the temperature signal is connected with the pressure difference pipeline (25, 26) temperature correlation; and a processing and / or evaluation unit (14), the processing and / or evaluation unit (14) is used to process the differential pressure measurement signal and the temperature signal; wherein the processing and / or evaluation unit (14) is used to process the differential pressure measurement signal and the temperature signal; or the evaluation unit (14) is adapted to: determine, on the basis of the differential pressure measurement signal and the temperature signal, a significant correlation between changes in the temperature signal and the differential pressure measurement signal, and take the correlation into account For an indication of a clogged differential pressure line, and also suitable for: testing on the basis of additional process data (51) whether the considered indication of a clogged differential pressure line can be verified, preferably the differential pressure measuring transducer (10) The additional process data (51) is not recorded.
Description
Technical field [0001] The present invention relates to a differential pressure measuring device and a method for monitoring a dial measuring device. Background technique [0002] The differential pressure measuring apparatus having a differential pressure line is particularly used for flow measurement or filter monitoring, wherein the differential pressure line is in the flow direction in the device (eg, a diaphragm or venturi nozzle or filter). Connecting to a medium including a pipeline to measure a transducer to a differential pressure measuring device by means of a medium. During operation of this measurement device, the differential pressure line may be blocked, thereby reducing a reliable measurement. Therefore, there is a known effort for the clogging of the early detection differential pressure line. [0003] German Patent Application DE 10 2013 110 059 A1 describes a differential pressure measuring device that detects a plugged differential line based on the correlation...
Claims
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IPC IPC(8): G01F25/00G01L27/00G01F1/36
CPCG01L27/007G01F1/36G01F25/10G01L13/00
Inventor 马克斯·耶勒达维德·帕罗托
Owner EHNDRESS KHAUZER GMBKH KO KG