Capacitive sensor device
OwnerHarald Benestadinventor
Life of this patent
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Abstract
A capacitive sensor device for measuring properties of a medium to be measured when this medium surrounds and flows past the sensor. The sensor has a housing of metal, an opening in the housing transverse to the flow of said medium to be measured which is adapted to house at least one capacitive electrode, and where the electrode(s) of the sensor is/are electrically insulated from said medium to be measured by means of a glass ceramic material that is arranged to be flush with the outer surface of the sensor.
Claims19
A capacitive sensor device for measuring properties of a medium to be measured when this medium surrounds and flows past the sensor, where the sensor has a housing (3;
- 37;42) of metal with an opening (19) in the housing designed to accommodate one or more electrode(s) (1;
- 7,8;
- 12-14;
- 20-24;
- 38-40;
- 43-47), said electrode(s) being electrically insulated from said medium to be measured by means of a glass ceramic material (2;
- 41;
- 48) that is arranged to be flush with the outer surface of the sensor housing (3), characterised in
- that said opening (19;
- 37′;
- 42′) in the housing relative to the flow of said medium to be measured is located transversely thereof between two opposite faces (3′,3″;
- 37′, 37″;
- 42′, 42″) of the sensor housing.
A device as disclosed in one or more of the preceding claims, characterised in
- the sensor electrode(s) being disc-shaped with a conical or polygonal contour.
A device as disclosed in one or more of the preceding claims, characterised in
- that the sensor housing, seen in cross-section, has an aerodynamic shape.
A device as disclosed in one or more of the preceding claims,
- characterised in
- that said medium to be measured consists of a fluid or several fluids in a mixture, e.g., liquid, gas, a mixture of liquid and gas (also including air), liquid and/or gas containing particles (e.g., sand).
Dependencies are inferred from the claim text.