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US 2003/0070488 A1Published application
Pressure measurement unit in a pressure measurement system
AssigneeFirst Sensor Technology GmbH
InventorsJohannes Ante, Markus Gilch
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AssigneeFirst Sensor Technology GmbH
InventorsJohannes Ante, Markus Gilch
Estimating the term…
Pressure measurement unit in a pressure measurement system A pressure measurement unit in a pressure measurement system has a housing section (8) which has an internal space (9) with internal surfaces, and a ceramic unit (1) which has a pressure diaphragm (2) and at least one external surface, with the ceramic unit (1) held in the press fit in the housing section (8) and with radial holding stresses operating between the external surface of the ceramic unit (1) and the internal surfaces of the housing section (8). In a method for manufacturing a corresponding pressure measurement unit with a housing section (8) and with a ceramic unit (1) which has a pressure diaphragm (2) and at least one external surface, with holding stresses built up between the housing section (8) and the ceramic unit (1), which hold the ceramic unit (1) in the internal space of the housing section (8).
Pressure measurement unit in a pressure measurement system, with a housing section (8), which has an internal space (9) with an internal surface, and with a ceramic unit (1) which has a pressure diaphragm (2) and at least one external surface,
Pressure measurement unit according to one of the preceding claims, characterized in that the internal surfaces of the housing section (8), on which the holding stresses act, are grooved.
Pressure measurement unit according to one of the preceding claims, characterized in that the ceramic unit (1) is not held in the press fit in the housings section (8) in a portion (5) in which the pressure diaphragm (2) is located.
Pressure measurement unit according to the preceding claim, characterized in that the ceramic unit (1) has a conical or stepped portion (6) on its external surface(s).
Pressure measurement unit according to one of the preceding claims, characterized by a support unit (17), which supplies pressure to the ceramic unit (1), with a seal (18) positioned between the ceramic unit (1) and the support unit (17).
Method for manufacturing a pressure measurement unit with a housing section (8), which has an internal space (9) with internal surfaces, and with a ceramic unit (1), which has a pressure diaphragm (2) and at least one external surface, characterized in that radial holding stresses are built up between the housing section (8) and the ceramic unit (1), which hold the ceramic unit (1) in the internal space (9) of the housing section (8).
Dependencies are inferred from the claim text.