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US 5,627,309 AGranted
Method for determining presence of water
OwnerJames R. Heckmaninventor
Life of this patent
Estimating the term…
Abstract
A sensor can detect the difference in potential between itself and the fluid into which it is immersed, a signal generated by the probe representing this difference in potential. This signal is used to activate an oscillator circuit. By varying the conditions at which current in the oscillator circuit begins to oscillate, various liquids can be detected and identified.
Claims4
A method for determining presence of water in a fluid, comprising the steps of:
- providing a probe responsive only to the presence of water;
- placing the probe in a supply of fluid;
- and
- determining the presence of water in the fluid responsive to an output signal of the probe representative of an electrical potential between the probe and the fluid having a predetermined value.
1 more element
A method for determining presence of water, comprising the steps of:
- providing a probe which includes an oscillating circuit responsive only to the presence of water;
- and
- determining the presence of water responsive to an output signal of the probe representative of an electrical potential having a predetermined value which permits the oscillating circuit to oscillate.
Dependencies are inferred from the claim text.