1) Often observe the sensor power cable and transmission cable (or wire) for damage, aging phenomenon, protect the rubber sheath outside the cable.
2) Periodically (generally half a year) with a soft do not scrub the electrode surface to remove dirt or sediment.
3) Remove debris in the direct channel upstream of the sensor.
Fault and troubleshooting:
1) The liquid does not flow and has output: 1. The signal transmission cable is connected to the converter; 2. The signal cable is disconnected from the electrode; 3. Contamination or deposition of insulation layer on electrode surface; 4. The ground is faulty or disconnected.
Solution: 1. Connect the cable; 2. Turn on the sensor and reconnect it; 3. Scrub the electrode surface; 4. Connect the lines.
2) The liquid flow has no output: 1. The two cores of the signal transmission cable between the converter are reversed; 2. The power supply is not connected or in poor contact; 3. There is leakage in the pipeline, shell and end face of the sensor instrument.
Solution: 1. Inverted head; 2. Connect the power supply and maintain good contact; 3. Trim the sensor.
3) Output instability: 1. Unsteady flow field; 2. The liquid that passes through the sensor contains gas and large solid blocks; 3. Virtual electrical connection; 4. Poor grounding; 5. Electrode leakage
Solution: 1. Transform the channel, or install more fake sensors; 2. Normal phenomena; 3. Check the cables and connect them properly. 4. Connect the ground cable. 5. Repair the sensor.
4) The error is too large: 1. The zero is too high; 2. Not completely filled with liquid; 3. The power supply distortion is too large; 4. The ground is faulty.
Solution: 1. Adjust the zero point; 2. Improve channel conditions, the sensor is always filled with liquid; 3. Improve power supply conditions to meet normal working conditions; 4. Connect the ground cable
