we have a rosemount 3051s differential flow transmitter mounted on a RO SKID.As part of calibration we checked the instrument before installation and found the transmitter showing very large error in zero(420mbar)when the calibrate range in 0 to 250mbar.so we tried to do zero trim the instrument from field communicator but it failed and showing that excess correction.anyone know how to solve this problem? waiting for your help...
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