Anhui Tiankang magnetic flap level gauge using common problems

Anhui Tiankang magnetic flap level gauge can achieve accurate liquid level and boundary detection in principle, but in the course of use, many magnetic flap liquid level gauges are still showing inaccurate, there is liquid level jump change or draw lines, etc. Phenomenon, one of the main reasons is that the floater is dirty, and the second is that the medium is more viscous and crystallized. This is the most common and most likely cause of failure in the use of magnetic level gauges. Because the float itself contains a permanent magnet, and the medium contains more or less impurities, its impurities will be absorbed by the magnetic float on the surface in the state of non-flow of the medium for a long time, and the more it becomes more and more as the use time is extended, it is easy to The mass of the float is increased and the submergence loss detection effect is caused. Even if the adhesion of contaminants does not cause the submerged float, the adherence of the float to the surface of the float causes the float to move up and down in the measuring cylinder, resulting in jamming or jamming. Impurities are also attached to the inner wall of the cylinder, which further hinders the floating of the float and causes the phenomenon of jump or stuck motion of the liquid level change. Then, the viscosity of the medium itself is relatively large under normal conditions, which can easily cause the float to move slowly. In addition, some media crystallize at room temperature, and it is very easy to cause the above phenomena in the float.

Magnetic flap level gauge floater failure occurred stuck, Anhui Tiankang manufacturers common practice is to disassemble the flange below the float level gauge, take out the float for manual cleaning decontamination, this repair work is dirty, in some measurement corrosion When the medium, such as various alkalis, acids, acid gas tanks, gas or all kinds of corrosive industrial media, is often injured because of corrosive media on the body during maintenance, toxic

The volatilization of gases also poses a hazard to the human body. Repairing and disassembling the floats for maintenance is a more dangerous task. In this case, protective work should be done in advance.

For the method of cleaning the floater of the magnetic flipper level gauge , in addition to the manual disassembly and cleaning, the method of remolding the magnetic flipper level gauge can realize the disassembly-free method, that is, the magnetic plug is used to measure the upper plug of the cylinder for modification and installation. A flushing line can be switched between steam and tap water. When a float jam occurs, just close the side of the magnetic flap level gauge or the upper and lower connection equipment valves, open the drain valve, and then open the upper flush valve. The steam and tap water can remove the dirt impurities adsorbed on the magnetic floater, can also remove the impurities on the inner wall of the measuring cylinder, and do not cause corrosive damage to the human body, and also reduce labor intensity.

Since the magnetic flap level gauge uses the principle of a communicator, the medium in the measurement cylinder is outside the device and is exposed to ambient temperature for a long period of time. When the measured medium is a medium that is easy to condense or freezes below zero degrees, the thermal insulation should be considered. With heat tracing, it must be careful not to use magnetic wire that is easy to be magnetically used for heat insulation to prevent it from being magnetized and cause the panel display and remote magnetic sensor to be affected. For the opening of steam tracing, it is also necessary to control the flow so as to prevent magnetic weakening caused by excessive temperature.

As for the phenomena that the float is jammed or stuck due to the viscous and crystallization of the medium, Anhui Tiankang's manufacturer recommends adding a heat pipe or a tropical cable, and then selecting a magnetic plate level meter with a jacket. In this way, the viscosity of the steam heating medium is reduced, and at the same time, the crystallization problem of the easily crystallizable medium can be appropriately solved. If the effect is not ideal, then other instruments such as flanged differential pressure transmitters should be selected to solve this problem.

For the magnetic flap level gauge drain valve need to be replaced when it is necessary to replace, based on cost considerations instrument manufacturers use the needle valve, in the daily maintenance and repair, prone to needle valve plugging phenomenon, and in The discharge of corrosive toxic media requires that they should not be directly discharged, but they cannot be taken over and guided. For example, the gate valve can be replaced and installed, its service life is prolonged, and its operation is convenient. When discharging the medium that easily pollutes the environment, it can be screwed onto the discharge line to make the operation more convenient.

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Size(mm)	Tolerance(mm)	Ovality(mm)
6.35 to 7.94	±0.13	0.20
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11.11 to 15.88	±0.18	0.25
15.88 to 22.22	±0.20	0.30
22.22 to 25.40	±0.23	0.33
25.40 to 28.58	±0.25	0.38
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31.75 to 34.92	±0.30	0.46
34.92 to 38.10	±0.36	0.53
38.10 to 50.80	±0.40	0.58
50.80 to 63.50	+0.79, − 0	0.58
63.50 to 88.90	+1.19, − 0	0.89
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