News

Your current location: Home > News

How to Properly Use Pressure Transmitter

March 16, 2022

Pressure transmitter, is the most common pressure measuring device on the current market. Not only their performance would affect the measurement effect but also the usage. Today we'll have a main analysis on how to properly use them.

1. Correctly install the pressure transmitter

The pressure transmitter must be installed correctly. For example, the inside of the oil circuit system under normal working conditions can be regarded as a closed container, which obeys Pascal's principle, that is, the oil pressure in the oil circuit system is equal everywhere. It is theoretically possible to install a pressure transmitter at any positions in the oil circuit, but actually this is not the case.

Tests show that the results vary when the pressure transmitters are installed in different positions. In fact, the oil circuit system is not a closed container in an ideal state. There will be leakage between the pipeline, the valve body, the oil cylinder and the piston, resulting in inconsistent pressure changes at different points. Secondly, due to the influence of oil viscosity, lag occurs in oil pressure transmission. In addition, buffer valves, throttle valves may cause hydraulic oil fluctuation due to the change of the cross-sectional area when the hydraulic oil flows, resulting in different instantaneous oil pressure changes between points.

Pressure transmistter 4-20mA

Therefore, the pressure transmitter should be installed in a position where the pressure signal can be directly and quickly detected, with few interference.

In addition, try not to install it the lower part where pollutants are deposited or at the upper part of the pipeline (valve block) where the bubbles are easy to accumulate and the local flow is fast.

2. Avoid hydraulic shock damage to the pressure transmitter Generally speaking, the peak pressure generated by the hydraulic shock can be as high as 3 to 4 times of the normal working pressure, and the limit peak value as high as 10 times, which will break the pipeline, damage the hydraulic components and sensors, causing the hydraulic system to heat up, generate vibration,noise...Here are some aspects to note:

A. Reasonable range Use within the marked range.

B. Install damping We generally apply a damper in our pressure transmitters.

C. Take exhaust measures

D. Properly debug and maintain.