Liquid turbine meter installation method

Liquid turbine meter installation method

Liquid turbine flowmeter is a kind of most typical speed flowmeter. It uses the average flow velocity of the rotor or impeller suspended in fluid to sense the fluid flow to derive the instantaneous flow and cumulative flow of the measured fluid. The purpose of the measurement. Turbine flowmeters consist of turbine flow sensors and display instruments. The following points need to be observed when installing turbine flowmeters.
1. The direction of liquid flow during installation should be consistent with the direction of the arrow indicating the flow direction on the sensor housing, and the upstream straight pipe section should be ≥20dn, and the downstream straight pipe section should be ≥5dn, where dn is the pipe inner diameter.
2, the sensor should be away from the external magnetic field, if you can not avoid, should take the necessary measures;
3, in order to repair and not affect the normal delivery of liquid, should be installed in the bypass pipe at both ends of the straight pipe;
4, when the sensor is installed in the open air, please do waterproof treatment of the amplifier plug;
5, sensor and display instrument wiring, should choose the wiring method according to the power amplifier.
6. The liquid flowmeter sensor can be installed horizontally and vertically, and the fluid direction must be upward when it is down. The liquid should be filled with pipes and there should be no bubbles. When installed, the direction of liquid flow should be consistent with the direction of the arrow on the sensor housing indicating the direction of flow. The upstream end of the sensor should have at least 20 times the straight length of the nominal diameter, and the downstream end should be not less than 5 times the straight diameter of the nominal diameter. The inner wall of the sensor should be smooth and clean, with no dents, fouling and peeling defects.
7. If the fluid is unstable with pulsating flow, a buffer may be installed to ensure good measurement of the rotameter to eliminate pulsating flow. When the rotameter is in use, slowly open the control valve on the upstream pipeline of the flowmeter, and then use the regulating valve to adjust the flow so as to prevent the float from rising suddenly to damage the conical tube.
Turbine flowmeters have high measurement accuracy and range ratios and are suitable for on-site measurements with large variations in flow rate. With low pressure loss and high pressure resistance, various components of the meter can be made of various anti-corrosion materials. It is a widely used flow meter.

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