Common problems/fault solutions of magnetic flap level gauge

What should I do if the flap level gauge fails? Common problems/fault solutions of magnetic flap level gauges. Magnetic flap level gauge is a commonly used flow measurement instrument, mainly for the detection of liquid media in the industry. There will also be failures in the process of use. The following will introduce the troubleshooting method of the magnetic flap liquid level sensor. 1. Special attention should be paid to the use of the magnetic flap level gauge. Never use a strong magnet to pull the float up and down outside the connecting pipe for inspection, otherwise it will cause the magnetic float to be magnetized and change its polarity, and even weaken the float's magnetism, making it difficult to normal work. 2. After the magnetic flap liquid level gauge has been put into use for a period of time, it is difficult for the float to float and the float moves inflexibly. But it's better to have a vacuum. Since the power supply voltage of the liquid level sensor is 14.5-36V DC, which is smaller than the 14.5-45V DC of the general transmitter, it cannot work normally when the load is large. 3. During the use of the magnetic flap level gauge, if the output signal produces frequent disturbances Or if there is interference pulse, it is necessary to check whether the shielding layer of the signal cable is reliably grounded, and whether the working connection resistance can meet the requirements. This is mostly caused by improper installation. At this time, it is necessary to pay attention to whether the center of the upper and lower flanges is in a line and whether it is perpendicular to the horizontal plane. 4. When the magnetic flap liquid level gauge is put into use on site, special attention should be paid to opening the upper gate valve first, and then opening the lower gate valve. 5. Select the magnetic flap liquid level meter, especially pay attention to whether the impedance of the liquid level meter and the safety barrier match. 6. The adjustment of the magnetic flap liquid level gauge is normal. After being put into use, it is found that the float is 'sucked' at a certain position for a period of time. This is because the bottom of the connecting pipe of the liquid level gauge is equipped with a thrust spring to protect the float. Otherwise, the effect of the large differential pressure may smash the float and make the level gauge unusable. 7. If the closed glass tube for on-site instructions is broken due to transportation or other reasons, the glass tube can be replaced. According to the field experience, the distance of about 100mm can ensure that the magnetic float will not be affected. The medium can be emptied first, and then the float can be taken out to eliminate iron filings or other dirt on the magnetic float. If the interference is still not completely eliminated, a signal isolator can be used to solve it. Generally speaking, the angle with the horizontal plane should preferably not be less than 87 degrees. If the deviation is large, it may affect the smooth movement of the float. This is mainly caused when the level gauge is installed through the steel platform and is too close to the steel plate. 8. During the on-site adjustment, it is accidentally found that the float is not flexible enough to move up and down. This is basically caused by iron filings or other dirt on the magnetic float. Therefore, when installing through the steel platform, special attention should be paid to the distance between the connecting pipe wall of the liquid level gauge and the cutting edge of the platform. Also pay attention to whether the glass tube is vertical so as not to affect the indication of the indicator.

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