Fluid leakage sensors
First Claim
Patent Images
1. A fluid leakage sensor, consisting of:
- A. an inner member means for containing an electrically conductive fluid, said inner member means being fabricated from a relatively high resistance material;
B. an outer electrically conductive member, disposed about said inner member means, said outer electrically conductive member being fabricated from a material having a relatively low electrical resistance; and
C. coupling means disposed on at least one end of said inner member means and said outer member for coupling a signal appearing across said outer member and said electrically conductive fluid contained within said inner member means to a sensing apparatus that is coupled to an output means.
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Abstract
A conductive fluid leakage sensor capable of detecting a leak from a first electrically conductive or non-conductive container with a conductive liquid disposed therein, has a second or outer electrically conductive coating surrounding a first conducting or non-conducting inner container. An electrical connection is made between the outer member and to the conductive fluid disposed within the container, so that conductive fluid leaking from the container that comes into contact with the outer electrically conductive coating creates a pulse, which may be sensed by a sensing apparatus providing an indication thereof.
16 Citations
10 Claims
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1. A fluid leakage sensor, consisting of:
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A. an inner member means for containing an electrically conductive fluid, said inner member means being fabricated from a relatively high resistance material; B. an outer electrically conductive member, disposed about said inner member means, said outer electrically conductive member being fabricated from a material having a relatively low electrical resistance; and C. coupling means disposed on at least one end of said inner member means and said outer member for coupling a signal appearing across said outer member and said electrically conductive fluid contained within said inner member means to a sensing apparatus that is coupled to an output means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A fluid leakage sensing apparatus, comprising in combination:
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A. an electrically non-conductive inner member means for containing an electrically conductive fluid having an electrically conductive ferrule disposed therein, said ferrule being in electrically conductive contact with said electrically conductive fluid; B. an electrically conductive outer member disposed about said inner member means having an electrically conductive clamping ferrule means disposed thereon for clamping said electrically conductive outer member and said electrically non-conductive inner member means upon said electrically conductive ferrule; C. said electrically conductive clamping ferrule means and said electrically conductive ferrule being adapted to be connected across a voltage source; and D. electrical circuit means for sensing when said electrically conductive fluid is leaking from said electrically non-conductive inner member means to said electrically conductive outer member.
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9. A fluid leakage sensing apparatus, comprising in combination:
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A. an electrically non-conductive inner member means for containing an electrically conductive fluid having an electrically conductive ferrule disposed therein, said ferrule being in electrically conductive contact with said electrically conductive fluid; B. an electrically conductive outer member disposed about said inner member means having an electrically conductive clamping ferrule means disposed thereon for clamping said electrically conductive outer member and said electrically non-conductive inner member means upon said electrically conductive ferrule; C. said electrically conductive clamping ferrule means and said electrically conductive ferrule being insulated by an insulating means disposed therebetween, said insulating means being; i) a toroid having a centrally disposed aperture; ii) having a first conductive surface, iii) having a second conductive surface, and iv) having insulation disposed between said first conductive surface and said second conductive surface, adapted to be connected across a voltage source; and D. electrical circuit means for sensing when said electrically conductive fluid is leaking from said electrically non-conductive inner member means to said electrically conductive outer member. - View Dependent Claims (10)
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Specification