Diaphragm gage for measuring the pressure of a fluid
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United States of America Patent
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Mar 25, 1997
Grant Date -
N/A
app pub date -
May 24, 1995
filing date -
Jun 3, 1994
priority date (Note) -
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Abstract
Apparatus for measuring the pressure of a fluid includes a first pressure transmission element in form of a membrane in contact with a pressure sensor, and a second pressure transmission element in form of a membrane which is acted upon by a fluid whose pressure is to be determined. The first membrane has a peripheral area which is pressed against the second membrane in such a manner that the space between the first and second membranes is sealed off from outside and is of a size as small as possible. Both membranes thus move in synchronism in dependence of the fluid pressure so that positive as well as negative pressures can be measured.
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