Analysis of Common Issues in On-site Installation of Magnetic Flip Level Gauges

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This post was last edited by B0SS on 2017-6-27 at 12:10. Magnetic flap level gauges feature high sealing performance and are suitable for use in high-temperature, high-pressure, and corrosive environments. Sometimes customers report problems with the installation and use of magnetic flap level gauges in the field; therefore, certain precautions need to be taken when using these level gauges. 1. The material used for a magnetic flap level gauge must be determined based on the location where the equipment will be installed and on the medium to be measured ； 2. The main pipeline should be cleaned periodically, depending on the conditions of the medium, in order to remove impurities; some of these impurities possess special chemical properties. 3. When a magnetic flap level gauge is equipped with remote transmission accessories, the following points should be taken into consideration: A. The sensing surface of the remote transmission accessories should be in close contact with and face the main pipe ； B. The zero point of the remote transmission auxiliary instruments should be on the same horizontal line as the zero indication of the level gauge ； C. The remote monitoring instruments should be attached closely to the main pipe of the level gauge, and secured using stainless steel clamps (iron clamps are not allowed) ； D. The connection between the remote transmission auxiliary instruments and the display instruments should preferably be made using shielded two-core cables or by running them in separate protective tubes ； E. After the wires are inserted into the junction box, it is necessary to ensure that it is properly sealed, in order to prevent rainwater, moisture, and other elements from entering and causing the remote monitoring instruments to fail to function properly. The junction box should be covered promptly after maintenance or calibration is completed. 4. Installation location of the magnetic flap level gauge: It should be placed away from or not near the inlet and outlet points of the fluid, so as to avoid sudden changes in fluid flow that could affect the accuracy of level measurement. 5. For magnetic flap level gauges that are longer than a certain length (more than 3 meters for the standard type, more than 2 meters for the corrosion-resistant type), intermediate reinforcement flanges or brackets must be added as fixing supports to enhance strength and counteract the weight of the gauge itself. 6. Precautions for adjusting magnetic flap level gauges: First, open the upper valve, then slowly open the lower valve to allow the medium to enter the main pipe gradually and smoothly (a sudden influx of medium into the float can cause severe fluctuations in the float, affecting the accuracy of the readings). Observe whether the magnetic red and white balls turn over properly; after that, close the valve on the lower pipe and open the drain valve to lower the liquid level in the main pipe. Repeat this process three times. If everything operates normally, the magnetic flap level gauge can be put into use.