Contactless liquid level sensor
DRIVE
May 7, 2014
In at least some implementations, a liquid level sensor includes a liquid level responsive member, first and second circuit elements and a magnetic field member. One circuit element generates a magnetic field and the other is responsive to the magnetic field. The magnetic field member is responsive to movement of the liquid level responsive member and alters, in at least some positions of the magnetic field member, at least one characteristic of the magnetic field experienced by the second circuit element as a function of the position of the magnetic field member. The magnetic field experienced by the second circuit element can be correlated to a position of the magnetic field member which can be correlated to a position of the liquid level responsive member to provide an indication of the liquid level in the tank.
Discussion in the ATmosphere