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Preparation tools: two adjustable wrenches, an explosion-proof Phillips screwdriver, white tape, insulation tape, detector XP3140.
1. Close the root valve and inlet valve of the pressure transmitter, open the vent valve, and wait until the detector XP3140 confirms that the combustible gas is empty before closing the vent valve.
2. Confirm that the pressure transmitter power supply between the cabinets has been unloaded;
3. Unscrew the pressure transmitter cover with a plum blossom driver, remove the signal cable, and protect the signal cable and its cable label with insulating tape;
4. Use a spanner wrench to remove the transmitter pressure tube connector and use an insulating tape to properly protect the head of the pressure tube.
5. Remove the transmitter fixing screw and take the transmitter off the bracket. 6. Clean the dust on the surface of the transmitter. Use a white tape to make the device label stick to the surface of the transmitter. 7. The transmitter will send it to the school. Inspection site and place it for more than 2 hours, to be verified.
Installation of pressure transmitter:
Preparation tools: two adjustable wrenches, an explosion-proof Phillips screwdriver, leak detection fluid.
1. Confirm that the pressure transmitter power supply between the cabinets has been unloaded;
2. Confirm that there is no debris in the head of the transmitter pressure pipe joint and the pressure pipe;
3. Mount the transmitter on the bracket and fasten the fixing screw with a screwdriver;
4. Use a spanner to connect and fix the pressure transmitter pressure tube fittings;
5. Disassemble the pressure transmitter cover with an explosion-proof Phillips screwdriver and correctly connect the signal wires according to the terminal wiring diagram.
6, connect the transmitter power supply;
7. Use the HART communicator in the station control room to perform zero and full calibration;
8. Confirm to open the pressure transmitter root valve and intake valve and close the vent valve;
9. Check the leaks with the leak test fluid.
Disassembly and installation of pressure transmitter
Pressure transmitter removal: