Electronic multi-points modification method of membrane gas meter

Abstract

The invention relates to an electronic multi-points modification method of membrane gas meter. The devices comprise electronic temperature modification membrane gas meter flow sampling device and the main control panel. The electronic multi-points modification method of membrane gas meter is characterized in that the signal output end of the devices comprise electronic temperature modification membrane gas meter flow sampling device is connected with the signal input end of the main control panel. The preset value of preset multiple traffic points on the main control panel is the ratio for error modification. According to the number of signal from electronic temperature modification membrane gas meter flow sampling device in a certain time, the main control panel calculates the gas velocity within the diaphragm gas meter and finds the corresponding point and transmits the calculated value to testing device. If the error between the calculated value and standard value is beyond the prescribed limit, the ratio for error modification of the corresponding point will be modified. The testing device can modify the ratios for error modification of many corresponding points at the same time. The electronic multi-points modification method of membrane gas meter has the advantages that the electronic modification module of the membrane gas meter can be installed on the base of a common meter without modification.

Description

technical field [0001] The invention relates to the technical field of measuring instruments, in particular to an electronic multi-point correction method for a membrane gas meter, which uses electronic sampling and realizes multi-point correction at the same time. Background technique [0002] The traditional diaphragm gas meter adopts gear transmission ratio technology, and adjusts the test error by replacing the adjustment teeth. It is equivalent to modifying the total coefficient of the membrane gas meter, which will affect the data of all test points to change. Every time the adjustment teeth are replaced, the data of all test points needs to be retested, which is time-consuming and laborious, and it is difficult to balance the error value of each point, usually requiring multiple tests. Some membrane gas meters use built-in signal lines to collect flow signals inside the membrane gas meters, and the signal lines go out of the base meter case and are transmitted to the...

AI Technical Summary

Problems solved by technology

In this way, the electronic device is placed inside the gas meter, which is prone to safety accidents, and the signal line passes through the case, which is prone to gas leakage accidents

The technical problem is: At present, none of the gas meters designed and developed in my country can realize the multi-point correction function on the basis of ordinary base meters

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