G - Physics – 01 – L
Patent
G - Physics
01
L
73/121
G01L 1/00 (2006.01) G01L 9/00 (2006.01)
Patent
CA 2021766
TITLE OF THE INVENTION PRESSURE SENSOR AND METHOD FOR CALIBRATING PRESSURE SENSORS ABSTRACT OF THE DISCLOSURE A precision pressure sensor in the form of a load cell has a mounting ring closed at one end by an end wall which has axially outwardly facing dead-end holes therein to form sensor beams each having an axially outwardly facing plane surface to which strain gages are bonded. The dead-end holes have bottoms forming sensor membranes. Opposite the closed end the mounting ring encloses a cavity forming a sensor space which is closed by a closure plug that simul- taneously has a bore for admitting fluid under pressure to be measured into the sensor space. A ring groove in the end wall has approximately radially sloping surfaces which together with the dead-end holes determine the minimum cross-section of the measuring beams. The ring groove also determines the minimum thickness of the sensor membranes. 2505/ar - 1 -
Hellwig Reimar
Waegner Ralf
Gowling Lafleur Henderson Llp
Hellwig Reimar
Waegner Ralf
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