Some points discovered in the magnetic levitation level gauge used in practice for everyone to understand
投用一段时间后，呈现浮子难以浮起且浮子挪动不灵敏的状况。 1. After the level gauge is put into use for a period of time, it appears that the float is difficult to float and the float is not sensitive to movement. This is basically caused by iron filings or other dirt on the magnetic float. Drain the medium before removing the float to eliminate iron filings or other dirt on the magnetic float
2. During the on-site adjustment, I accidentally found that the float is not sensitive enough to move up and down. This is mostly caused by the improper level gauge device. At this time, pay attention to whether the center of the upper and lower flanges can be on a line and whether it is perpendicular to the level plane. In general, the angle between the surface and the degree is preferably not less than 87 degrees.
If the bias is large, it may affect the smooth movement of the float.
3. Select intrinsically safe liquid level timer, pay special attention to whether the impedance of the liquid level meter and the safety grid can match.
调校正常，投用后发现浮子在某一位置呈现一段时间的“吸住”现象。 4. The liquid level gauge is adjusted normally. After being put into use, it is found that the float exhibits a "suck" phenomenon for a period of time in a certain position. This is mainly caused when the level gauge passes through the steel platform device and is too close to the steel plate. Therefore, the need to pay special attention to the level gauge communication pipe through the steel platform device
The distance between the tube wall and the cutting edge of the platform.
5. During the use of the level gauge, if the output signal generates frequent disturbances or interference pulses, it is necessary to check whether the signal cable shielding layer can be reliably grounded and whether the working connection resistance can meet the request.
6. When the level gauge is put into operation on site, pay special attention to the upper gate valve should be opened first, and then the lower gate valve should be opened later. 连通管的底部装有维护浮子的止推弹簧，否则，大差压的作用可能撞碎浮子招致液位计无法运用。 This is because the bottom of the liquid level gauge communication tube is equipped with a thrust spring to maintain the float. Otherwise, the effect of large differential pressure may break the float and cause the liquid level gauge to fail to operate.
7. If the closed glass tube used for site instruction is broken due to transportation or other reasons, it can be replaced by domestic glass tube. But it is better to evacuate. Also pay attention to whether the glass tube is vertical, so as not to affect the indication of the indicator.
8. Pay special attention when using the level gauge. Do not use a strong magnet to stop the float to pull the outside of the communication tube to stop the inspection. Otherwise, it will cause the magnet float to magnetize and change its polarity, which will weaken the float magnet and make it difficult to work normally.