Flow Transmitter calibration

A

Thread Starter

A.Elshaer

Hello All,

Could any one please describe what is the meaning of calibration of a flow transmitter on-line. as I understood this calibration will be used to make the flow transmitter capable of reading a flow of different gases depending on process requirement. so if the process running on Nitrogen, we have to recalibrate the Flow transmitter for this but how? and calibrating a flow transmitter means changing the range of the transmitter according to the medium flows inside?
 
J
Calibration can mean three things:

- Correcting a sensor that has drifted

- Setting the range corresponding to 4-20 mA

- Correcting 4-20 mA current which has drifted. Learn more from the white paper found here:
http://www.eddl.org/DeviceManagement/Pages/Calibration.aspx

You can use Smart Meter Verification (SMV) to determine if your flow sensor has drifted or not. If it hasn't drifted, you don't have to calibrate

Smart Meter Verification for magflow transmitters
http://www.eddl.org/SiteCollectionDocuments/Articles/pg42-47-1-MAG3.pdf

Smart Meter Verification for Coriolis flowmeters
http://www.ceasiamag.com/article-5644-timeforcalibration-LogisticsAsia.html

Cheers,
Jonas
 
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