Phenomenon |
Reason |
Treatment Measures |
| No flow signal output from the meter | 1. The flow meter power supply is not normal. | 1. Check whether the output voltage of the power supply circuit board is normal. |
| 2. The cable connection is not normal. | 2. Connect the cables correctly. | |
| 3. The liquid flow condition does not meet the requirements. | 3. Check the direction of liquid flow and whether the tube is full of liquid. | |
| 4. The sensor parts are damaged or there is an adhesion layer inside the measurement wall. | 4. Regularly carry out the cleaning of the covered liquid scar layer. | |
| 5. The converter components are damaged. | 5. Replace the damaged components. | |
| Output value fluctuation | 1. Electromagnetic interference generated by external stray currents, etc. | 1. Check if there are large electrical appliances or welding machines working in the flow meter operating environment. |
| 2. The pipe is not filled with liquid or the liquid contains air bubbles. | 2. Make the liquid full tube or bubble flattening | |
| 3. The power board of the flowmeter is loose. | 3. Disassemble the flow meter and re-fix the circuit board. | |
| The flow measurement value does not match the actual value | 1. Transmitter circuit board failure. | 1. Check if the transmitter circuit board is intact. |
| 2. The liquid flow rate is too low and contains tiny air bubbles. | 2. Ensure that the flow rate of the measured liquid in the pipeline is above the minimum flow limit value. | |
| 3. Signal cable is not well connected. | 3. Check whether the signal cable connection and the insulation of the cable are intact. | |
| 4. The parameter setting value of the converter is not accurate. | 4. Re-set the converter setting value and calibrate the zero and full value of the converter. | |
| Output signal over the range | 1. Signal cable wiring error. | 1. Check the signal circuit connection. |
| 2. The parameters of the converter are not set correctly. | 2. Check whether each parameter setting and zero point and fullness of the converter meet the requirements. | |
| 3. Converter and sensor model mismatch |
3. Switch the type of converter and sensor. |