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US 2016/0349128 A1Published application
Diaphragm pressure gauge with monitoring function
AssigneeWIKA Alexander Wiegand SE & Co. KG
InventorsReimund KAUFMANN, Andreas MASSONG, Karsten MOTTL
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Abstract
A diaphragm pressure gauge, in which a measuring spring is monitored in regard to integrity in that on the side, facing away from the process pressure, of the measuring spring a vacuum chamber is formed to which vacuum is applied and which is controlled by means of a vacuum monitoring device to maintain the vacuum.
Claims11
A diaphragm pressure gauge comprising:
- at least one plate-shaped measuring spring;
- a push rod coupled to the measuring spring;
- a measuring mechanism, which is configured to convert a mechanical movement into a pointer deflection on a display dial, wherein the push rod transmits a movement of the measuring spring, the movement caused by an application of pressure by a process pressure to the measuring mechanism to produce a pointer deflection;
- a fluid-tight vacuum chamber to which vacuum is applied is formed on a side facing away from the process pressure of the measuring spring;
- and
- a vacuum monitoring device adapted to maintain a predetermined value of the vacuum in the vacuum chamber.
3 more elements
Dependencies are inferred from the claim text.