Pressure guiding tube blockage diagnosing device and blockage diagnosing method

A diagnostic device and pressure guiding tube technology, which is applied in the direction of measuring device, measuring fluid pressure, fluid tightness test, etc., can solve problems such as pressure guiding tube blockage, process variable cannot be measured correctly, and complete equipment influence. stagnation effect
CN103575466AInactive Publication Date: 2014-02-12YAMATAKE HONEYWELL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YAMATAKE HONEYWELL CO LTD
Publication Date
2014-02-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

A pressure guiding tube blockage diagnosing device includes a receiving portion that receives pressure data from a pressure detecting portion, a feature quantity calculating portion that partitions a time series of pressure data, received by the receiving portion, into a plurality of intervals, and calculates, for each interval, a feature quantity indicating the state of fluctuation of a pressure, a change rate calculating portion that performs, for each interval, a smoothing process on the feature quantities over a specific time interval up to that interval, and calculates, from the feature quantities that have been subjected to the smoothing process, a change rate, for each interval, indicating the change of state of blockage of a pressure guiding tube therein, and an evaluating portion that evaluates the state of blockage of the pressure guiding tube based on the change rate calculated by the change rate calculating portion.
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Description

technical field

[0001] The present invention relates to a clogging diagnosis device and a clogging diagnosis method of a pressure guiding tube for guiding the pressure of a measurement object fluctuating in pressure to a pressure detecting unit for diagnosing clogging of the pressure guiding tube. Background technique

[0002] Conventionally, in the field of the process industry, pressure transmitters and differential pressure transmitters have been used, for example, to detect process variables and control processes. Pressure transmitters are also called pressure transmitters, and differential pressure transmitters are also called differential pressure transmitters. The pressure transmitter is used to measure absolute pressure and gauge pressure, and the differential pressure transmitter is used to measure the differential pressure between two points, and is used for the determination of process variables such as pressure, flow, liquid level, and specific gravity. Generall...

Claims

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