Diaphragm gage for measuring the pressure of a fluid
First Claim
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1. Apparatus for measuring the pressure of a fluid, comprising:
- a first pressure transmission element;
a pressure sensor operatively connected with said first pressure transmission element; and
a second pressure transmission element acted on by a fluid, said first pressure transmission element having a border area which is pressed through a translational force in an axial direction against said second transmission element in such a manner that a space between said first and second pressure transmission elements is sealed off from outside and is of a size as small as possible so as to effect a substantially synchronous movement of the first and second pressure transmission elements in dependence of the pressure of the fluid acting on the second pressure transmission element and thereby to allow a direct measurement of the fluid pressure by the pressure sensor.
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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.
268 Citations
19 Claims
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1. Apparatus for measuring the pressure of a fluid, comprising:
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a first pressure transmission element; a pressure sensor operatively connected with said first pressure transmission element; and a second pressure transmission element acted on by a fluid, said first pressure transmission element having a border area which is pressed through a translational force in an axial direction against said second transmission element in such a manner that a space between said first and second pressure transmission elements is sealed off from outside and is of a size as small as possible so as to effect a substantially synchronous movement of the first and second pressure transmission elements in dependence of the pressure of the fluid acting on the second pressure transmission element and thereby to allow a direct measurement of the fluid pressure by the pressure sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification