Patent ID: 9182265
Filing Date: 2015-11-10
Classification: G01F

Abstract:
1. A liquid level detection device for detecting the level of liquid in a tank comprising: a. a plurality of low impedance signal electrodes located adjacent the tank, wherein each of the plurality of low impedance signal electrodes is located vertically with respect to each other; b. a signal source connected to the plurality of low impedance signal electrodes for generating a set of unique signals, each unique signal associated with one of the low impedance signal electrodes, wherein each low impedance signal electrode of the plurality of low impedance signal electrodes transmits the unique signal associated with that one low impedance signal electrode to the tank; c. an antenna located adjacent the tank and displaced from the plurality of low impedance signal electrodes for receiving the unique signals transmitted by the plurality of low impedance signal electrodes; and d. a sensing circuit connected to the antenna for receiving the unique signals from the antenna and for producing an output signal proportional to the liquid level in the tank for each of the plurality of low impedance signal electrodes.