Flow meter

Fault point: Converter Test tool. Verification scheme. 1. Confirm if there is a pull-up resistor at the site 2. Whether there is the voltage at the pulse acquisition end 3. Check if the wiring is correct Test result: 1. 1. No pull-up resistor 2. No voltage 3. Wrong wiring Treatment solution: 1. 1. Pull up […]

Fault point: inaccurate flow Fault point: Converter Troubleshooting solution. Test the internal parameters of the meter head for the correctness Test result. Calibration coefficients have been modified Solution. Contact factory to check original coefficients

Fault point: Sensor Troubleshooting solution. Correct installation position Test result. The mounting position does not meet the requirements Treatment solution. Replace the mounting position (Appendix 5) Appendix 5 Flowmeter correct installation and precautions. The length of the straight pipe section is best for the flowmeter before ≥ 10DN, the back end ≥ 5DN, when the

Fault point: Converter Detection tool: Test software Troubleshooting solution. 1. Confirm that the communication protocol matches the meter head 2. Use the test software to check if the communication is available Test results. 1. The protocol is the same, the parameters are set correctly 2. Test software cannot communicate with the meter head Treatment options:

Fault phenomenon: No display after power on Fault point: Converter Detection tool: Multimeter Verification program. 1. Detect whether the site voltage is normal 2. Detect whether the fuse, or lightning protection tube are normal 3. LCD line Test results:  1. Voltage within the normal range ±15% 2. Fuse tube damaged The lightning protection tube is

Whether the customer has moved the parameters. If it is the signal line of the coil (D4 type is not), use a magnet against the base and slide it left and right to get an instantaneous flow. Ask the customer if there is a signal that is not present after repeatedly turning the meter head,

Fault point: Sensor Verification program. 1. flowmeter installation position is correct 2. Whether there are media covering the electrode 3. Whether the flowmeter is grounded Test results. 1. Replace the installation position 2. The electrode is covered 3. No grounding Treatment options: 1. 1. Replace the installation position. 2. Clean the electrodes regularly 3. Instruct

Fault point: no pipe running with flow indication Fault point: Converter Troubleshooting solution. Test whether the parameter setting of the flow zero correction FS is equal to 0 Test result. Example: FS = +002 The solution: Close the front and rear valves in the full pipe state, and calibrate the flow zero point through the

Fault point: Converter Test tool: Multimeter Checking solution. 1. The measurement range of the flowmeter is consistent with the user’s equipment 2. The user will remove the 4-20mA line, enter the converter parameter settings, find the current zero point correction, and current full correction, and press the enter key to enter the current zero point,

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