What is Damping in instrumentation?

In reaction to modifications in the input variable, a process transmitter typically “measures” a process variables such as, flow, intensity, temperature, pressure-and generates an output. Most transmitters incorporate a sensor that measures the input variable and delivers an output common to 4–20 m A.

A concept called damping is of critical importance in a transmitter’s performance. The output of the transmitter must be updated and changed accordingly as the input variable modifications.

Damping is the amount of time required to reach 63.2 percent of the transmitter’s final value after a step change has been applied to the input, in addition to the update time.

The damping of transmitters can be adjusted from 1 to 32 seconds. Damping reduces the impacts of electrical noise and any other insignificant transient noise which may affect the output signal of the transmitter. It is often used to stabilize control loop and avoid false trips.

Damping may not be required in processes that are slow and have inherent lag time, such as temperature control loops, in the absence of electrical or transient noise. In rapidly changing process conditions, damping should be minimized


Instrumentation Engineer

Related Articles

Back to top button

Adblock Detected

We Noticed You're Using an Ad Blocker Hi there! We understand that ads can be annoying, but they help support our website and allow us to continue providing you with high-quality content. Please consider whitelisting our site or disabling your ad blocker while you visit. Your support means a lot to us! Thank you for understanding!