公开(公告)号：US10591426B2

公开(公告)日：2020-03-17

申请号：US15754489

申请日：2016-08-24

Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION

Inventor： David Geoffrey Miljak ,  Peter John Coghill ,  Jochen Lehmann-Horn ,  Bojan Lovric ,  Richard Yong

IPC: G01N24/08 ,  G01V3/14 ,  G01R33/36 ,  G01R33/422

Abstract: Apparatus including an electrically conductive housing, an electrically non-conducting pipe carrying the slurry through the housing, one or more primary coils each encircling the pipe within the housing and having a capacitor unit coupled thereto with a capacitor unit value chosen so that a primary coil series resonance is formed close to the value of a target magnetic resonance frequency, and for each primary coil, a drive coil and associated electrical network positioned to magnetically couple the drive coil to that primary coil. An impedance monitor coupled to each electrical network measures a complex input impedance thereof. An RF transmitter transmits a signal to one or more of the electrical networks with a frequency approximately equal to the target magnetic resonance frequency, and an RF receiver receives from each electrical network magnetic resonance signals from the target and forms an output signal of detected signals.