This excel sheet is very helpful in Level transmitter calculation
This tool will help you to calculate zero suppression or zero elevation of level transmitter
it supports following level measurement
Open Tank level measurement
Liquid Purge
Interface Wet Leg level measurement
Gas purge
Two seals
One seal below
One seal above
Bubble level
Bubble interface
Two seal interface
Note :
Minus sign indicates that the bench calibration pressure is to be applied to the low-pressure side of the transmitter.