Capacitance probe for high resistance materials
First Claim
1. A capacitance probe for location in a vessel in the path of falling, substantially electrically non-conductive particulate matter to detect collection of such particulate matter to a predetermined level in the vessel, said probe comprising:
- an electrically conductive mounting member;
at least one elongated, flat sided capacitor blade, said blade being electrically grounded and cantilever mounted at one end to said member;
an elongated, flat sided capacitor sensor element arranged in parallel, confronting, spaced apart relation to said blade;
means cantilever mounting one end of said sensor element in electrically insulative relationship to said member; and
mounting means operative to mount said member to said vessel and horizontally project said blade and said sensor element within said vessel at a predetermined level, with the flat sides thereof vertically oriented whereby said particulate matter can fall freely past said blade and said sensor element without collecting therebetween.
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Accused Products
Abstract
There is disclosed a capacitance probe for determining the level of high electrical resistance material in a vessel. The probe comprises at least two parallel, large surface area blades which are supported from a mounting plate and spaced apart to define a capacitance path. One blade is attached to an insulator body which is attached to the mounting plate while the other blade is directly attached to the mounting plate in electrical continuity therewith. The insulator body is a ceramic sleeve having a length sufficient to prevent shunting of the capacitance path. The probe is particularly intended for detection of level of fly ash and the like in a receiver vessel.
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Citations
6 Claims
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1. A capacitance probe for location in a vessel in the path of falling, substantially electrically non-conductive particulate matter to detect collection of such particulate matter to a predetermined level in the vessel, said probe comprising:
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an electrically conductive mounting member; at least one elongated, flat sided capacitor blade, said blade being electrically grounded and cantilever mounted at one end to said member; an elongated, flat sided capacitor sensor element arranged in parallel, confronting, spaced apart relation to said blade; means cantilever mounting one end of said sensor element in electrically insulative relationship to said member; and mounting means operative to mount said member to said vessel and horizontally project said blade and said sensor element within said vessel at a predetermined level, with the flat sides thereof vertically oriented whereby said particulate matter can fall freely past said blade and said sensor element without collecting therebetween. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification