caplary transmitter calibration method

"Hello", "Goodday", or "Hey Guys" would be nice atleast.

The calibration procedure is pretty much the same as for any other type of transmitter, one difference is the connection to test equipment if the process connection is flanged then you may need to use an accommodating flange with connection for standard or easily available instrument fitting, this may be a flange with a drill and tapped 1/2" or 1/4" NPT hole.

The input pressure is applied for LRV and URV (on the appropriate side if it is a dp transmitter) for zero and span adjustment respectively.

If the transmitter is Hi side flanged & Capillary and the Low side threaded NPT connection as with many dp level transmitters it may be possible to connect to the Low side and pull vacuum pressure equal to the desired LRV and URV. This would depend on the nature of the test equipment being used.

I hope this helps.

let say the LRV value is -136.21 mBar and URV is -33.63 mBar, how i'm going to performed transmitter Zeroing with refered to side-glass (actual zero).