초록 ▼

A flowmeter for measuring the velocity of a fluid employs a circuit for producing a magnetic field transverse to the direction of fluid velocity, thereby inducing a voltage potential in the fluid. At least two electrodes, in electrical contact with the fluid and spaced apart along a line transverse

A flowmeter for measuring the velocity of a fluid employs a circuit for producing a magnetic field transverse to the direction of fluid velocity, thereby inducing a voltage potential in the fluid. At least two electrodes, in electrical contact with the fluid and spaced apart along a line transverse to the direction of the magnetic field and transverse to the direction of the fluid velocity, are responsive to the induced voltage potential. A signal processing circuit, that is responsive to the two electrodes, generates a velocity signal representative of the magnitude of the velocity of the fluid. A circuit periodically grounds the two electrodes, thereby eliminating any residual charge that builds up on the electrodes.

대표청구항 ▼

[ What is claimed is:] [1.] A flowmeter for measuring the velocity of a fluid, comprising:a. means for producing a magnetic field transverse to the direction of fluid velocity thereby inducing a voltage potential in the fluid;b. at least two primary electrodes in electrical contact with the fluid, s

[ What is claimed is:] [1.] A flowmeter for measuring the velocity of a fluid, comprising:a. means for producing a magnetic field transverse to the direction of fluid velocity thereby inducing a voltage potential in the fluid;b. at least two primary electrodes in electrical contact with the fluid, spaced apart along a line transverse to the direction of the magnetic field and transverse to the direction of the fluid velocity, said primary electrodes responsive to the induced voltage potential;d. signal processing means, responsive to said two electrodes, for generating a velocity signal representative of the magnitude of the velocity of the fluid; ande. means for periodically grounding said two electrodes, thereby eliminating any residual charge that builds up on said electrodes, rein said magnetic field generating means comprises two spaced-apart electromagnetic coils having a common axis and the same current and wherein said coils are separated by a distance of about the radius of one of said coils.