- What is a level switch?
Known as level switches or float switches – these are used to trigger the opening or closing mechanism depending on the level of fluid within a chamber. As an example; inside a boiler or a cistern, level switches are used to understand when a suitable amount of water is present in order to activate the valve.
- How do level switches work?
There are various styles of switches, but the majority function in a similar way. The liquid inside a container lifts an attached float (either internal or external), activating a mechanical action that completes a circuit. This might be a mercury switch on a hinge, or a buoyant rod that rises to trigger a microswitch.
Level switches (float switches) can be used for continuous or point measurements, and are often used in sequence. For example, a set of sensors climbing the wall of a tank can be used to measure continuous fluid levels, and trigger set actions at each new depth. Inside a shower pump system, the “on” sensor may be significantly higher than the “off” point, so that the tank will not be excessively filled or drained.
- Where are level switches used?
Level switches are used in a variety of scenarios including pumps, indicators, alarms, fuel tanks, water storage, and more.
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