Problems and solutions of calibration of bar flowmeter in the whole process of application
1. Pay attention to the application of liquid level meter. Do not use NdFeB magnet to pull out the floats on both sides of the connecting tube for inspection. Otherwise, the magnetic float will be magnetized to change the optical rotation, or even make the float magnetic weak, so that it can not work normally.
2. When the bar flowmeter is installed on site, it is necessary to open the upper stop valve and then the lower stop valve. The glass tube level gauge is because the bottom end of the connecting tube of the level gauge is equipped with a torsion spring yellow to maintain the float. Otherwise,
3. If the closed glass test tube for specific application guidance on the spot is damaged due to transportation or other reasons, the glass test tube can be replaced by home mounted laminated glass. But it's a vacuum pump. The danger of high gas pressure will make the float hit and make the level gauge unusable.
4. Select intrinsically safe liquid level meter,
5. The origin of magnetic rotating bar flowmeter has been properly corrected. After the application is processed, it is found that the buoy appears in a certain part in a period of time. This is mainly caused by the distance between the liquid level gauge and the thick steel plate when they are installed on the steel service platform. Therefore, the installation must be carried out according to the steel structure platform, and attention must be paid to the wall thickness of the liquid level gauge and the spacing between the drilling blades of the service platform. Pay attention to whether the characteristic impedance of liquid level gauge and safety barrier is matched. Because the power supply voltage of the level meter is 14.5-36vdc, which is lower than the 14.5-45vdc of the general intelligent transmitter, it can not work normally when the load is large.
6. Sometimes on the spot adjustment will find that the floating body is not flexible enough to move around. This is mainly due to incorrect installation. The magnetic flap level gauge should pay attention to whether the management center of the left and right flange plates is on a parallel line and vertically bisects the horizontal plane. Generally, the angle of view selection with the horizontal plane shall not be less than 87 degrees. If the error is quite large, it will endanger the stable body-building exercise of the float.
7. When the magnetic rotating liquid level gauge is used for a period of time, the pressure switch of the water pump cannot float up, and the pressure switch of the water pump is not flexible. This is mainly due to the iron float or other wastes on the float. It can pump the material for a time, and then it can remove the float to remove the iron pin or other air pollutants on the magnetic float.
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