What is the principle of float water level switch? Use of float water level switch

Lead: What Bian Xiao is going to introduce to you today is something called a float water level switch. I believe that everyone is also common in life. The float water level switch is divided into old and new ones. The most common old-fashioned float water level switch is probably the most common float water level switch in the toilet tank. That's the simplest float level switch. Today, Bian Xiao is here to introduce a new type of float water level switch, which is more widely used than before.

The principle of float water level switch is as follows:

All liquids have buoyancy, and the floating ball system (usually equipped with corresponding auxiliary equipment) is made according to the buoyancy of liquids. When the liquid level rises, the floating ball system will also rise accordingly. Similarly, when the liquid level drops, the floating ball system will also drop accordingly. When rising or falling to the set position, the floating ball system will touch the travel switch (or other microelectronic equipment) at the set position, so that the travel switch will send out an electrical signal, and the electric control equipment will immediately cut off or turn on the power supply after receiving the electrical signal.

It is basically a reed switch structure with a movable floating ball outside and a magnet inside. When the magnet approaches the reed switch by buoyancy, the contacts in the reed switch are opened or closed. The principle of reed switch is that like magnetic poles repel and opposite magnetic poles attract. The reed switch in the liquid level switch controls the corresponding operating mechanism to form a complete circuit.

Use:

Stainless steel floating ball liquid level switch is specially used for liquid level detection, signal remote transmission, switch alarm of various small and medium-sized atmospheric and pressurized liquid storage tanks, and can be applied to various sanitary, environmental-friendly, toxic and corrosive medium liquids.

Conventional stainless steel models are: SS45I, SS80L, SS 125I, SL2 and other models can be customized as required. Installation forms are divided into: top installation, bottom installation and side installation.

Relationship between properties of liquid medium and floating ball;

1. When the specific gravity of the liquid is different, the action position of the floating ball will change. Generally, when SG is less than water, the part of the floating ball immersed in liquid will increase relatively.

2. The reference specific gravity of the float switch product is water (SG= 1), so when using the float, the specific gravity SG of the liquid surface must be greater than that indicated in the float instruction, otherwise the float switch cannot float.

3. For high-viscosity liquids that will not dry up, stainless steel floating balls with larger outer diameters should generally be selected.

4. The float switch uses a magnet to sense the reed switch, so the measured liquid level should be free of iron filings, otherwise the iron filings will stick to the float, and the float will not float, which will affect the action of the float switch.

Conclusion: The above is what Bian Xiao told you about the float water level switch today. Generally speaking, the principle of the float water level switch is quite simple, and even we can use our brains to make a simple one at home. But this is an important switch after all. If you do it at home, the quality is not good. The most important thing is that the accuracy is not enough. Therefore, it is still necessary to buy qualified float water level switches from regular manufacturers.

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