G - Physics – 01 – L
Patent
G - Physics
01
L
73/3
G01L 9/16 (2006.01) G01L 9/00 (2006.01) G01L 9/14 (2006.01)
Patent
CA 1250446
-14- ABSTRACT OF THE DISCLOSURE A differential pressure transmitter includes a housing, a first chamber within the housing for receiving an input pressure to be sensed and a second chamber for receiving a transmitter adapted to generate an electrical signal representative of the input pressure. The chambers are separated by a continuously formed, highly resilient diaphragm. A reaction member embodied as a resilient spring is disposed in the second chamber for sensing a position of the diaphragm resulting from the magnitude of the differential pressure thereacross. The reaction member has a magnetized structure mounted thereon which coacts with a Hall effect transducer embodied in the transmitter for detecting the relative position of the magnetized structure and therefore of the diaphragm and responsively generating an electrical signal. The signal may be utilized for positioning actuator controlled dampers within a VAV system duct.
485133
Johnson Service Company
Kirby Eades Gale Baker
LandOfFree
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