Optical pressure sensor with reduced mechanical stresses
OwnerGaétan Duplain, Sylvain Bussière +1inventors
InventorsGaétan Duplain, Sylvain Bussière, Philippe Lafleur
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Abstract
There is described an optical pressure sensor comprising a sensor housing and an optical pressure cell mounted within the sensor housing and dividing the sensor housing into a first fluid space and a second fluid space. The optical pressure cell comprises a front side exposed to a pressure in the first fluid space and a back side exposed to a pressure in the second fluid space. The optical pressure sensor further comprises a fluid communication arrangement allowing pressure equalization between the pressure in the first fluid space on the front side and the pressure in the second fluid space on the back side of the optical pressure cell.
Claims15
An optical pressure sensor comprising:
- a sensor housing;
- an optical pressure cell mounted within the sensor housing and dividing the sensor housing into a first fluid space and a second fluid space, the optical pressure cell comprising a front side exposed to a pressure in the first fluid space and a back side exposed to a pressure in the second fluid space;
- and
- a fluid communication conduit allowing pressure equalization between the pressure in the first fluid space on the front side and the pressure in the second fluid space on the back side of the optical pressure cell.
An optical pressure sensor comprising:
- a sensor housing;
- an optical pressure cell mounted within the sensor housing and dividing the sensor housing into a first fluid space and a second fluid space, the optical pressure cell comprising a Fabry-Perot cavity having a diaphragm being exposed to a pressure in the first fluid space, the optical pressure cell for measuring a pressure difference between the first fluid space and the Fabry-Perot Cavity;
- and
- a fluid communication conduit allowing fluid communication and eliminating a difference in pressure between the second fluid space and one of the first fluid space and the Fabry-Perot cavity.
Dependencies are inferred from the claim text.