Floatless gauge with resistive/conductive polymer
First Claim
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1. A floatless gauge assembly to be used in conjunction with a voltage source and a voltage indicator for measuring the fluid level in a tank, comprising:
- a first elongate insulating member dimensioned to extend into the fluid having first and second sides;
a first elongate electrically resistive/conductive polymeric member dimensioned to extend into the fluid having first and second ends, said first end thereof connected to a first conductor for electrical connection to the positive terminal of a voltage source and said second end thereof connected to a second conductor for connection to the negative terminal end of a voltage source, and said first elongate member connected to said first side of said insulating member; and
a second elongate electrically resistive/conductive polymeric member dimensioned to extend into the fluid having first and second ends, said first end thereof connected to a third conductor for connection to a voltage indicator, and said second elongate member connected to said second side of said insulating member.
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Abstract
A floatless liquid level gauge assembly utilizing polymeric resistive/conductive elements is provided which measures the liquid level of partially conductive or conductive liquids in a tank using a three terminal voltage divider network or a two terminal voltage or current network. The polymeric resistive/conductive element(s) extending into the tank and the liquid in the tank provide an electrical path which provides a signal proportional to the liquid level in the tank.
63 Citations
7 Claims
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1. A floatless gauge assembly to be used in conjunction with a voltage source and a voltage indicator for measuring the fluid level in a tank, comprising:
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a first elongate insulating member dimensioned to extend into the fluid having first and second sides; a first elongate electrically resistive/conductive polymeric member dimensioned to extend into the fluid having first and second ends, said first end thereof connected to a first conductor for electrical connection to the positive terminal of a voltage source and said second end thereof connected to a second conductor for connection to the negative terminal end of a voltage source, and said first elongate member connected to said first side of said insulating member; and a second elongate electrically resistive/conductive polymeric member dimensioned to extend into the fluid having first and second ends, said first end thereof connected to a third conductor for connection to a voltage indicator, and said second elongate member connected to said second side of said insulating member. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification