Instrument Calibration
Instrument Calibration
(OP)
Hi guys.
One of the things we run into often when doing a revamp is the need to recalibrate the instruments; Temperature, Pressure instruments as well as Level instruments.
My question is why do we need to calibrate an existing instrument?
For example, suppose we are changing the operating condition of an existing tower from 25 Barg to 20 barg..Would there be a need to recalibrate the pressure instrument? Why?
Thanks
One of the things we run into often when doing a revamp is the need to recalibrate the instruments; Temperature, Pressure instruments as well as Level instruments.
My question is why do we need to calibrate an existing instrument?
For example, suppose we are changing the operating condition of an existing tower from 25 Barg to 20 barg..Would there be a need to recalibrate the pressure instrument? Why?
Thanks





RE: Instrument Calibration
RE: Instrument Calibration
RE: Instrument Calibration
In your 25bar changing to 20bar example - You choke the resolution of the control loop down into 80% of the full range. Might mess with the loop gain too.