Advice for engineers who need to replace float level switches

- Mar 02, 2020-

At this time, it is necessary to use other more reliable liquid level switches to replace the magnetic float switch, which is close to the price of the magnetic float switch, and has a photoelectric type tank level switch that can completely replace the floating ball liquid level switch.


Unlike the mechanical operation of the magnetic float switch, the internal parts of the photoelectric tank level switch are treated with photosensitive resin sealant, and there are no moving parts inside. Therefore, in addition to the characteristics of high reliability, it also has the advantages of compact structure and small size.


The structure of the magnetic float switch is relatively loose and complicated. The head of the magnetic float switch includes a pipe column, a float ball, a fixed ring and a threaded part. The overall head is longer and has more parts. The head of the photoelectric tank level switch is composed of a transparent shell. Inside the transparent shell are all the components, so the volume is small and the installation space is small.


The photoelectric tank level switch has only a small part of the head in contact with the liquid, usually as follows.

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The float is that the entire head of the level switch needs to contact the liquid, so it takes up a lot of space. Not only that, because of its structural design, the magnetic float switch is very inconvenient to clean and will affect its user experience. The head of the photoelectric liquid level switch is smooth and easy to clean. It can be cleaned by rubbing it down or washing with water, and it is not easy to accumulate scale.


The photoelectric tank level switch uses the principle of optical reflection to detect the liquid level, so it has little effect on the measured liquid. When the photoelectric liquid level switch head is made of food-grade materials, it can meet the food hygiene certification standards. And the separation type photoelectric liquid level switch can realize non-contact detection, the photoelectric liquid level switch does not contact the liquid, so it is more hygienic.


The photoelectric tank level switch is not affected by liquid corrosiveness, color, temperature, pressure and magnetism, and has the characteristics of no calibration, maintenance free and long life. If the float level switch needs to be replaced, a photoelectric tank level switch can be used.

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PSU material