Level Transmitter of Mobery LT100 displacer type is working OK in workshop but after installation in area showing indication in minus -35% instead 0%. While there is no physical level in compressor knock out drum.

Kindly help me regarding this type of LT problem as indication is going to minus side.

Services: water condensate of knock out drum, Air compressor.
Pressure round 15 Kg/cm2 maximum.

Regards
Qamar Ali

 

Dear Qamar Ali

I Believe you are using Diaphragm (Remote) Seal type transmitter for the Level measurement. If you reverse the range (for example instead of URV-> 2500mmH2O & LRV-> 0mmH2O reverse it to URV-> 0mmH2O & LRV-> -2500mmH2O. this will solve the problem. You need to calibrate the Tx in wet leg.

Regards
Sakthi