Home News

Liquid flowmeter fault self-test

Liquid flowmeter fault self-test

  • March 21,2019.

Ⅰ.LWGY series turbine flow meter is a new generation of turbine flow meters which has absorbed the advanced technology of flow meter at home and abroad,and is manufactured according to JB/9246-199 standard. It has the characteristics of simple structure, light weight, high precision, good reproducibility, high responsiveness, easy installation and maintenance.

Liquid Turbine Flow Meter

Ⅱ. Maintenance:

1)Always observe whether the sensor power cable and transmission cable (or wire) are damaged or aging, and protect the rubber sheath outside the cable.

2)Regularly (generally half a year) use soft non-scrubbing electrode surface to remove dirt or sediment.

3)Remove sundries in the upstream channel of the sensor.

Ⅲ.Faults and troubleshooting

1) The liquid does not flow and has an output: 1. There is an open circuit connection between the signal transmission cable and the converter; 2. The signal cable is disconnected from the electrode connection; 3. The surface of the electrode is contaminated or deposited with an insulating layer; 4. The grounding is poor or the circuit is broken.

Solution: 1. Connect the cable; 2. Open the sensor, reconnect it; 3. Scrub the electrode surface; 4. Connect the bottom line.

2) No flow of liquid flow: 1. The two transmission wires of the signal transmission cable between the converter and the converter are reversed; 2. The power supply is not connected or the contact is poor; 3. The sensor has leaks in the pipe, the outer casing and the end face.

Solution: 1. Rewind the head; 2. Connect the power supply and keep the contact well; 3. Repair the sensor.

3) The output is unstable: 1. The flow field is unstable; 2. The liquid passing through the sensor contains gas, large solid block; 3. The electrical connection is virtual; 4. The grounding is poor; 5. The electrode leaks.

Solution: 1. Transform the channel, or increase the installation of fake sensors; 2. Normal phenomenon; 3. Check the wiring, connect the line; 4. Connect the ground wire 5. Repair the sensor.

4) The error is too large: 1. The zero point is too high; 2. The liquid is not completely filled; 3. The power supply is distorted too much; 4. The grounding is poor.

Solution: 1. Re-adjust the zero point; 2. Improve the channel conditions, the sensor is always full of liquid; 3. Improve the power supply conditions, in line with normal working conditions; 4. Connect the ground wire.

© Copyright: 2021 Hubei Nan Kong Instrument Technology Co.,Ltd..All Rights Reserved.

Chat now

Live Chat

    Email us with any questions or inquiries or use our contact data. We would be happy to answer your questions.