Seal for pressure transmitter for use in industrial process
First Claim
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1. A pressure transmitter system for measuring a pressure of a process fluid in an industrial process, comprising:
- a pressure transmitter having a pressure sensor;
a process fluid passageway having a circular opening configured to couple pressure of the process fluid to the pressure sensor;
a concentric seal support structure which extends around the circular opening comprising;
an annular recess;
an annular stress riser positioned radially inward from the annular recess; and
a seal material which fills the annular recess and contacts at least a portion of the annular stress riser.
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Abstract
A pressure transmitter system for measuring a pressure of a process fluid in an industrial process includes a pressure transmitter having a pressure sensor. A process fluid passageway having a circular opening is configured to couple pressure of the process fluid to the pressure sensor. A concentric seal support structure extends around the circular opening comprising an annular recess. An annular stress riser is positioned radially inward from the annular recess. A seal material fills the annular recess and contacts at least a portion of the annular stress riser.
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Citations
19 Claims
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1. A pressure transmitter system for measuring a pressure of a process fluid in an industrial process, comprising:
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a pressure transmitter having a pressure sensor; a process fluid passageway having a circular opening configured to couple pressure of the process fluid to the pressure sensor; a concentric seal support structure which extends around the circular opening comprising; an annular recess; an annular stress riser positioned radially inward from the annular recess; and a seal material which fills the annular recess and contacts at least a portion of the annular stress riser. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of sealing a process variable transmitter having a pressure sensor to a process fluid, comprising:
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providing an annular stress riser extending around a process coupling; providing an annular recess around the stress riser positioned radially outward from the annular stress riser; placing a seal material in the annular recess and between the stress riser and a process face; and applying a pre-load force which urges the seal material against the process face. - View Dependent Claims (18, 19)
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Specification