Automatic detection system for pressure transmitter

Abstract

The invention provides an automatic detection system for a pressure transmitter and belongs to the field of pressure transmitter detection. The defects of low detection speed and low detection precision due to the fact that manual detection is needed for the detection of the measurement precision of the pressure transmitter in the prior art are overcome. The system comprises a pressure source used for providing gas or liquid pressure for a standard detection meter and a detected pressure transmitter at the same time; a standard detection meter used for generating corresponding standard current according to the received gas or liquid pressure; a measured pressure transmitter used for generating corresponding current to be measured according to the received gas or liquid pressure; a data acquisition module used for subtracting the received standard current from the current to be measured, taking the absolute value of the difference value as an error variable, and sending the error variable to the report generation module; and the report generation module used for calling a corresponding error reference range according to the received precision grade, comparing the error variable with the called error reference range, obtaining a detection result indicating whether the detected pressure transmitter is qualified or not, and generating a detection report. The system is mainly used for detecting the pressure transmitter.

Description

technical field [0001] The invention belongs to the field of pressure transmitter detection. Background technique [0002] Pressure transmitters are common instruments used in electric power, chemical industry and other industries for the measurement and control of industrial process pressure parameters. In order to ensure the accuracy and reliability of monitoring parameters, pressure transmitters need to be regularly calibrated according to relevant regulations. In the past, the verification of pressure transmitters was operated manually. The verification personnel calculated the current standard values ​​corresponding to different percentages of the range according to the range of the transmitter, and compared the current value output by the transmitter with the standard value during the verification process. deviation, and finally issue a report. The whole process is relatively cumbersome, error-prone, and affected by the level of testing personnel, so a device that can...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the existing verification of the measurement accuracy of pressure transmitters, which requires manual verification and has the defects of slow detection speed and low detection accuracy. The present invention provides an automatic detection system for pressure transmitters

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