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technical article
Reasons for the delayed movement of the reading pointer of the metal tube float flowmeter
2012-2-21 16:21:34

的浮子中间装有导向杆,浮子可以平稳地在导杆上下运行,减小了浮子的跳动。 The metal tube float flowmeter is equipped with a guide rod in the middle of the float. The float can smoothly run up and down the guide rod, which reduces the jump of the float. However, if the guide rod is bent or the float is slightly deformed, the movement will be limited and the reading will not work. The most likely cause is because the valve is quickly opened or closed quickly, which results in the occurrence of air pockets or water hammer, which causes the float to violently impact in the flow meter, which deforms the float or bends the guide rod. The solution is to do it slowly when opening and closing the valve.

The second reason is due to the magnetic coupling and the effect. The long-term high temperature or the use environment is too bad, which causes the magnetic coupling and magnetic properties to drop, and the movement of the float cannot drive the pointer's indication. 内部吸附了许多的铁粉状地杂质颗粒。 The other is because a lot of iron powder particles are adsorbed inside the metal tube float flowmeter . The solution is to use a magnetic filter in front of the metal tube float flowmeter to filter impurities such as iron filings and iron powder.

内部结构的变形引起的。 The third reason is caused by the deformation of the internal structure of the metal tube float flowmeter . The possible reasons are that the mechanical transmission parts such as the pointer gear are stuck, and the float or liner of the PTFE material is deformed. In this case, only the float and lining can be replaced to solve the problem.

In addition, because the medium is too viscous and sticks to the float and the inner wall, in addition to the error of the flow meter, the pointer of the metal tube float flow meter will also cause poor pointer operation. In this case, just remove the flowmeter and clean it to restore the original accuracy.