Liquid Level Sensor Types. These have been in markets for decades. Rotary paddle level switch, capacitance level switch, rf admittance level switch, vibration fork level switch, side mounted float level switch, etc.
Level sensors are classified according to the number of locations where the fluid measurement is to be done. And the third approach uses a float with an imbedded magnå°et that activates a reed switch. These vertical float type continuous level sensors are used in tanks and vessels that require precise liquid level indication.