초록 ▼

An apparatus for use in the capacitive measurement of the void fraction in a flowing liquid. An assembly of at least two electrodes is spaced apart around the exterior of the body defining a flow passage such that the capacitance of the electrode assembly is a function of the dielectric constant of

An apparatus for use in the capacitive measurement of the void fraction in a flowing liquid. An assembly of at least two electrodes is spaced apart around the exterior of the body defining a flow passage such that the capacitance of the electrode assembly is a function of the dielectric constant of material within the passageway. The radial thickness of the body is substantial such that the passageway occupies a portion of the electrostatic field of the electrode assembly which is relatively uniform. The dielectric constant of the body may be substantially equal to the expected dielectric constant of the said liquid. The body may be tubular with the electrode assembly directly supported on the radially outer surface of the tube.

대표청구항 ▼

An apparatus for use in the capacitive measurement of the void fraction in a flowing liquid, comprising: a body defining a flow passage through which said liquid flows, said body having a radial thickness and a dielectric constant which is substantially equal to the expected dielectric constant of s

An apparatus for use in the capacitive measurement of the void fraction in a flowing liquid, comprising: a body defining a flow passage through which said liquid flows, said body having a radial thickness and a dielectric constant which is substantially equal to the expected dielectric constant of said liquid; and electrodes supported by said body for producing an electrostatic field within said flow passage, whereby measurement of the capacitance between said electrodes is indicative of the void fraction of said liquid, said radial thickness, of said body having been varied to a set predetermined radial thickness, whereby predetermining said thickness results in a substantially uniform electrostatic field within said flow passage.