The pressure difference generated by the liquid's own gravity is used to measure the liquid level in the container. The high-pressure side measuring tube is always filled with water due to steam condensation, keeping the pressure constant, while the low-pressure side measuring tube and the container form a communication device, and its pressure changes linearly with the change of the liquid level in the container.

A good DP transmitter will ensure that the differential pressure is measured accurately,regardless of other changing parameters and will reliably transmit signal to represent the differential pressure. In a typical control loop,the transmitter signal is fed to the controller where output is used to regulate the flow rate through a control valve.

Product other application

• Differential pressure transmitters are commonly used to calculate pressure, flow, liquid level, volume, etc. in media. It is mainly used in industrial control fields such as energy, chemical, natural gas, power plants, paper making For example, in a milk manufacturing industry, the proportion of pipelines needs to be controlled, and a hygienic differential pressure transmitter is used to monitor the flow of the pipeline and control the proportion.