Measuring and testing – Volume or rate of flow – Using differential pressure
Reexamination Certificate
2005-05-10
2005-05-10
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Volume or rate of flow
Using differential pressure
Reexamination Certificate
active
06889563
ABSTRACT:
A float-type flowmeter measures the rate of a fluid flowing upwardly through a tube based on the position of a float movably disposed in the tube and including a magnetic material. A coil is wound around the tube such that the intervals gradually decrease in an axial direction. The coil is excited by an alternating current supplied from an inductance change detector. The inductance change detector detects a change in the inductance of the coil which is caused when the float moves in the axial direction, and generates a voltage. A voltage-to-position (flow rate) converter determines a flow rate from the voltage corresponding to the position of the float.
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Note: An English language abstract of the above Japanese citation is provided to serve as a partial translation thereof.
Kawasaki Setsuro
Sotome Motohiro
Tomita Seiji
Watanabe Tsuyoshi
Guss Paul A.
Lefkowitz Edward
Mack Corey D
SMC Kabushiki Kaisha
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