Capacitive sensors are commonly used in level detection applications. Specific capacitive sensors can supply better solutions than others depending on the type of media you may be detecting and if the sensor is in direct contact with that media. Keep reading to decide which type works best for different application solutions.
Non-contact capacitive sensors
Capacitive sensors are great for monitoring the fill level of non-conductive materials. In many cases, the capacitive sensor doesn’t need to physically touch the media it is detecting; rather, it would sit outside a thin, non-metal container or pipe. As the level rises or falls, the capacitive sensor can signal if the medium is there. Since non-contact capacitive sensors sit outside the medium, there shouldn’t be any interference or false readings from direct contact with the material.
One common application for non-contact sensing is the level detection of a water tank. As the sensor detects from outside the tank while looking in, it signals if the water is at the detection point. You can schedule a refill of the water stored in this insulated tank or maintenance based on the level detected. You can also use these sensors to stop overfilling containers, tanks, or pipes.
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