Meters, pressure transmitters, and flow instruments must provide reliable values. Calibration and verification ensure that readings remain within permissible limits.
What is calibration?
The instrument is compared against a known reference value and its deviation is recorded.
What is verification?
It is confirmed that the deviation is within the acceptable limits of the application.
Why is it needed periodically?
Over time, drift may occur due to aging, temperature, vibrations, or mechanical wear.
Traceability
In critical applications, there must be a documented connection of the measurement to a recognized reference standard.
Practical value
Accurate measurements mean better diagnosis, reliable energy monitoring, and correct billing.
