Fluid level sensor with stair step output

Details Fluid level sensor with stair step output Fluid level sensor with stair step output

1991-01-30

1992-09-15

Cuchlinski, Jr., William A.

Measuring and testing

Liquid level or depth gauge

Float

73304R, 338 33, 338176, G01F 2370

Patent

active

051467852

ABSTRACT:
A two wire and a three wire resistive fluid level sensor for measuring fluid levels within a container are disclosed. The sensor includes a plurality of resistors connected in series. The sensor produces an output signal by providing a short circuit to the circuit nodes between the resistors so that a stair-step output signal is created as the float moves in conjunction with the liquid level in a container. The value of the resistances can be varied in order to accommodate various cross-sectional tank contours and thus produce a usable, readily and easily configurable sensor. The structure of the sensors enables measurement of depth variances far in excess of prior art sensors.

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