Temperature compensated flow sensor

Details Temperature compensated flow sensor Temperature compensated flow sensor

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G01F 1/20 (2006.01) G01F 1/22 (2006.01) G01F 15/02 (2006.01) G01P 13/00 (2006.01) F02B 61/04 (2006.01) F02B 75/02 (2006.01)

Patent

CA 1210956

Temperature Compensated Flow Sensor Abstract A temperature compensated flow sensor (10) for monitoring oil flow to a two-cycle engine includes a magnetic flow sensing body (26) mounted in a flow sensing bore (21). The position of the flow sensing body is detected by a Hall switch (42) to provide an electrical output indicating a flow or a no flow condition. The flow sensing body (26) is biased toward the Hall switch (42) by a spring (27) and a spring follower (31) controls the spring rate as a function of temperature. A thermal power element (35) moves the spring follower as a function of temperature to compensate for the change of oil viscosity with temperature.

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