G - Physics – 01 – F
Patent
G - Physics
01
F
73/125
G01F 1/36 (2006.01) G01F 1/38 (2006.01) G01F 5/00 (2006.01)
Patent
CA 1257486
APPLICATION OF A. D. KOMPELIEN FLOW SENSOR WITH ADJUSTABLE SENSITIVITY ABSTRACT A flow sensor having adjustable sensitivity includes a differential pressure sensing element located in an internal compartment within a rotatable cylinder. The compartment is connected between diametrically opposite fluid ports on the surface of the cylinder by fluid channels. In one embodiment, the sensor is located on a diaphragm partitioning the compartment into a first and a second chamber with the sensor being responsive to a distortion of the diaphragm induced by a differential pressure. In a second embodiment, the sensor is a flow sensor and is arranged to monitor a fluid flow through the compartment induced by a differential pressure. The cylinder is rotatable on an axis at located right angles to a fluid flow thereacross whereby the ports are selectively located at a desired angle with respect to the fluid flow path. The cylinder is located within a fluid-tight housing having a fluid inlet and a fluid outlet arranged to direct a fluid being monitored by the sensor around the cylinder. An external adjusting knob is connected to the axis of the cylinder through a first fluid-tight -2- access opening in the housing to provide a means for selectively rotating the cylinder. Electrical connections to the pressure sensing element are provided through a second fluid-tight access opening in the housing. The sensor has particular utility in a flow measuring system using a plurality of sensors having their output signals applied through a shared amplifier whereby each sensor is adjusted to compensate for individual sensor sensitivity.
489663
Honeywell Inc.
Smart & Biggar
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