Patent ID: 7038467

Claim:
A sensing assembly for sensing liquid levels in a reservoir and for creating a sensing signal therefor, said sensing assembly comprising: a first electrical conductor extending into the reservoir; a second electrical conductor extending into the reservoir and disposed from said first electrical conductor a predetermined distance; a first electrode electrically connected to said first electrical conductor, said first electrode extending between a first conductor end and a first distal end and defining a first electrode length therebetween; a second electrode electrically connected to said second electrical conductor, said second electrode spaced apart from said first electrode and extending between a second conductor end and a second distal end defining a second electrode length therebetween; a plurality of plates operatively connected to said second electrode spaced equidistantly therealong, each of said plurality of plates combine with said first electrode to create a capacitance such that the sensing signal generated by said sensing assembly determines the level of the liquid in the reservoir; a plurality of inductors operatively connected between each of said plurality of plates and said second electrode; and a plurality of resistors operatively connected to each of said plurality of plates and said plurality of inductors such that each of said plurality of resistors, inductors and plates are connected in series with said second electrode.