公开(公告)号：US5017879A

公开(公告)日：1991-05-21

申请号：US408451

申请日：1989-09-15

申请人： Gary Lucas ,  Maurice Beck ,  Andrew Hunt

发明人： Gary Lucas ,  Maurice Beck ,  Andrew Hunt

IPC分类号： G01N27/22

CPC分类号： G01N27/221 ,  G01N27/226

摘要： 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.