Fault point: Converter
Inspection tool: spanner / multimeter
Checking program.
1. Check if the wiring between the meter head and the meter body is correct
2. Disconnect the meter head from the meter body and twist the two excitation wires of the converter together to see if the SYS alarm still exists
3. Check if the converter milliamp matches the sensor
Test results.
1. The wiring is correct
2. SYS alarm still exists
3. Example: 250mA converter mA, DN50 sensor diameter
Treatment options: 1.
1. Return to the factory for repair
2. Converter damage (return to the factory for repair)
3.DN80 below the sensor coil resistance value and the meter head milliamp does not match the alarming phenomenon, but the flowmeter can operate normally, can close the system alarm does not affect the normal use of the user