7 key details to consider for micro liquid flowmeters

Improper use of micro liquid flowmeters can affect their lifespan. Here are seven key points to note when using micro liquid flowmeters.

1. The liquid flowmeter sensor can be installed horizontally or vertically, with the fluid direction pointing upward when installed vertically. The pipeline should be filled with liquid without any bubbles. During installation, the direction of liquid flow should be consistent with the arrow indicating the flow direction on the sensor housing. The upstream end of the sensor should have a straight pipe section at least 20 times the nominal diameter in length, and the downstream end should have a straight pipe section not less than 5 times the nominal diameter. The inner wall should be smooth and clean, without defects such as dents, scale buildup, and peeling.

2. The sensor should be kept away from external magnetic fields. If this is unavoidable, necessary measures should be taken; magnetic fields can affect the accuracy of measurements.

3. When installing the sensor outdoors, please ensure proper waterproofing of the amplifier plug.

4. When installing the sensor outdoors, please ensure proper waterproofing of the amplifier plug.

5. To avoid affecting the normal delivery of liquid during maintenance, bypass pipelines should be installed outside the straight pipe sections at both ends of the sensor.

6. If the fluid is unstable and exhibits pulsating flow, a buffer can be installed as needed to eliminate the pulsating flow and ensure stable measurement by the flowmeter. When using a rotameter, the control valve on the upstream pipeline of the flowmeter should be slowly opened first, and then the flow rate should be adjusted using a regulating valve to prevent the float from rapidly rising and damaging the conical tube due to sudden opening.

7. To ensure that maintenance does not affect the normal delivery of liquid, a bypass pipeline should be installed outside the straight pipe sections on both ends of the sensor.

By paying attention to the above details, there generally won't be any major issues with the use of flowmeters, which greatly impacts their operation and future maintenance.