Pressure indicating device
AssigneeSamson Aktiengesellschaft
InventorWerner Bohlien
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Abstract
The invention relates to a pressure indicating device for indicating a pressure in a first fluid system, said pressure indicating device including a first port via which it is fluidically connected to the first system, which pressure indicating device furthermore comprises a cylinder with a preloaded piston that can be displaced therein in an axial direction, during which movement fluid contained in the first system can act on the piston surface. The invention is characterized in that said piston has an opening in its piston surface, which opening can be made to communicate with a second system via a second port, said piston comprising a diaphragm which is impermeable to a first fluid but permeable to a second fluid, said diaphragm separating the first port from the second port.
Claims17
A pressure indicating device for indicating a pressure in a first fluid system, said pressure indicating device comprising:
- a first port via which said pressure indicating device is fluidically connected to the first fluid system comprising a first fluid and a second fluid, a cylinder in which a preloaded piston can be displaced in an axial direction, during which movement fluid contained in the first fluid system can act on the piston surface, wherein said piston has an opening in its piston surface, which opening is in fluid communication with a second fluid system via a second port, wherein said piston comprises a diaphragm that separates the first port from the second port and restricts the fluid communication between the first port and the second port via said opening because said diaphragm is impermeable to the first fluid but permeable to the second fluid.
Dependencies are inferred from the claim text.