Low pressure transducer using metal foil diaphragm
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United States of America Patent
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-
Jun 4, 1991
Grant Date -
N/A
app pub date -
Jan 23, 1990
filing date -
Jan 23, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A low pressure transducer is disclosed which utilizes a stainless steel foil diaphragm. An electrically conductive layer is deposited onto a non-conductive planar disk to form one plate of a capacitor. An epoxy ring is silk-screened onto the non-conductive plate to form an insulative washer between the stainless steel foil and the conductive layer on the non-conductive plate. A stainless steel ring is placed on top of the stainless steel foil and pressed down toward the non-conductive plate until the capacitance formed by the conductive layer screened onto the non-conductive plate and the stainless steel foil diaphragm reaches a predetermined level.
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