Zero point regulation method for differential pressure transmitter

Abstract

The invention provides a zero point regulation method for a differential pressure transmitter, which comprises the following steps that: a low-pressure side inlet valve is closed, and a balance valve is opened, so the high-low-pressure-side balance can be reached, the valve regulation can be realized through the zero point corrosion via a zero regulating screw or a hand operator, and the discharge is not needed. The zero point regulation method has the advantages that the zero point corrosion can be carried out on the transmitter only through operating the two valves, the time is saved, the discharge is not needed, the transmitter can enter the work state in time, and the efficiency is improved.

Description

technical field [0001] The invention relates to an adjustment method, in particular to a method for adjusting the zero point of a differential pressure transmitter. Background technique [0002] At present, the zero point adjustment of the traditional differential pressure transmitter needs to close the high and low pressure inlet valves, open the balance valve, and open the high and low pressure side discharge holes before the zero point adjustment can be performed. This is not only cumbersome to operate, but also if the medium is liquid, especially the differential pressure transmitter, the discharge is not clean, and it is easy to cause zero point drift, resulting in inaccurate measurement results. It takes a long time to reach the working state (the discharged condensate needs to be condensed again). Contents of the invention [0003] In order to solve the deficiencies of the prior art, the invention provides a method for adjusting the zero point of a differential pre...

AI Technical Summary

Problems solved by technology

This is not only cumbersome to operate, but also if the medium is liquid, especially the differential pressure transmitter, the discharge is not clean, and it is easy to cause zero point drift, resulting in inaccurate measurement results. It takes a long time to reach the working state (the discharged condensate needs to be re-condensed)