Relative pressure measuring transmitter
AssigneeEndress + Hauser GmbH + Co. KG
InventorsRaimund Becher, Juergen Tanner
Life of this patent
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Abstract
A relative pressure measuring transmitter resistant to the intrusion of moisture. includes a housing, an insert arranged in the housing, a gap existing between the housing and the insert, a relative pressure sensor, and, connected to the relative pressure sensor, a reference pressure supply line, which leads into the insert, opens on an outer wall of the insert, and has an interior, which is connected via an opening in insert with the gap The housing has a bore passing through it, via which the gap is placed in communication with an environment of the relative pressure measuring transmitter.
Claims9
1-8. (canceled)
A relative pressure measuring transmitter, comprising:
- a housing;
- an insert arranged in said housing;
- a gap between said housing and said insert;
- a relative pressure sensor;
- and,
- a reference pressure supply line connected to relative pressure sensor, which said line leads into insert, vents on an outer wall of said insert, and has an interior, which is connected with said gap via an opening in said insert;
- wherein;
- a bore passes through said housing, for placing said gap in communication with an environment of said relative pressure measuring transmitter.
The relative pressure measuring transmitter as claimed in 9, wherein:
- in the interior of said insert, an electrically conductive layer is provided, which encloses an inner space of said insert.
The relative pressure measuring transmitter as claimed in 9, wherein:
- said gap is bounded by two seals compressed between said housing and said insert.
The relative pressure measuring transmitter as claimed in 9, wherein:
- a direct connection in said gap between said bore and said opening extends over a circular segment about a longitudinal axis of said insert or said housing.
The relative pressure measuring transmitter as claimed in 9, wherein:
- said bore in said housing is located on a side of said insert lying opposite to said opening.
The relative pressure measuring transmitter as claimed in 9, wherein:
- said bore has a length of at least six millimeters, and a pin is inserted into said bore.
The relative pressure measuring transmitter as claimed in 9, wherein:
- said opening is closed by a moisture-rejecting, gas-permeable filter.
Dependencies are inferred from the claim text.