Rosemount differential pressure transmitter has a wide range of applications in the factory, in order to ensure its normal operation and accuracy, regular inspection, calibration is necessary. A method of on-site calibration without the need to remove a pressure tube is presented.
Rosemount differential pressure transmitter in daily use precautions:
1: Do not add more than 36V voltage to the transmitter, resulting in damage to the transmitter;
2: Do not touch the diaphragm with a hard object, resulting in damage to the isolation diaphragm;
3: The measured medium is not allowed to freeze, otherwise it will damage the sensor element isolation diaphragm, resulting in damage to the transmitter, if necessary, the need for temperature protection of the transmitter to prevent icing;
4: When measuring steam or other high-temperature medium, the temperature should not exceed the limit temperature when the transmitter is used, and the heat sink must be used above the temperature limit of the transmitter.
5: When measuring steam or other high-temperature medium, use a heat pipe to connect the transmitter and the pipe together and use the pressure on the pipe to transfer to the transformer. When the measured medium is water vapor, appropriate amount of water should be injected into the heat pipe to prevent the superheated steam from directly contacting the transmitter and damaging the sensor.
6: During the transmission of pressure, the following points should be noted:
a, Rosemount differential pressure transmitter and heat pipe connection, do not leak;
b. Before starting to use, if the valve is closed, the valve should be opened very carefully and slowly to prevent the measured medium from directly hitting the sensor diaphragm and damaging the sensor diaphragm.
c. The pipeline must be kept clear and the deposits in the pipeline will pop up and damage the sensor diaphragm.
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