Precision Differential Pressure Transmitter - Pressure Remote Transmitter steam pressure sensor
It is judged whether the differential pressure transmitter that is moving is measuring the standard during the field use. Firstly, the high and low pressure chambers of the differential pressure transmitter should be turned off, and the balance valve and the instrument vent switch should be turned on. At this time, the output of the meter should be lower than 4 mA. The output of the stock is not less than 4 mA, which may be a slight blockage in the high pressure chamber piping.
Secondly, close the high pressure chamber pressure point and open the air switch. At this time, the output should be 4 mA. If the output is lower than 4 mA, the migration amount may become smaller or the zero position is lower. If the isolation liquid is poured, the precision pressure transmitter It may be that the spacer fluid is not filled or the side is missing. If the output voltage is 4 mA, the migration amount becomes large or the zero position is high.