HOME > Float-Type Level Switches > Guide to float
A float is one of the most important components of a sensor that detects liquid level.
It floats in a fluid such as water or oil, rising and falling with the changing level of liquid.
You can find the difference between completely closed cells and imcompletely closed cells on the right pictures. If you cut floats with same size, the imcompletely closed cell float will sink, while the completely closed cell float will be almost no change.
Each cell is independently closed, the liquid will not go into further, and the buoyancy will not be affected so much.
The liquid goes through in the cells, and the float is no longer buoyant.
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Fully independent |
This is foamed by the addition of phenolic resin to NBR (nitrile rubber). |
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Internal cavity |
Made of press-molded stainless steel with plasma welding. |
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mixture of |
Made of PP (polypropylene) and nylon foamed in a resin mold. |
| Wood, cork |
Previously, wood and cork were used for floats, but this made it difficult to maintain uniform quality and obtain a stable supply of material. They are not currently used because of quality and cost problems and issues of insertion of sensor magnets. |
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SUS and similar |
Previously, wood and cork were used for floats, but this made it difficult to maintain uniform quality and obtain a stable supply of material. They are not currently used because of quality and cost problems and issues of insertion of sensor magnets. |
| Other types |
Products of titanium and fluorine exhibit very good characteristics (including good resistance to high temperature and high pressure). Currently, because of high cost, marketing is difficult and demand is low. |
