公开(公告)号：AU656840B2

公开(公告)日：1995-02-16

申请号：AU3296393

申请日：1993-02-10

Applicant: UNITED TECHNOLOGIES CORP

Inventor： VERONESI WILLIAM A ,  WEISE ANDREW P ,  REED ROBERT W ,  RINGERMACHER HARRY I

IPC: G01N15/00 ,  G01N15/06 ,  G01N27/22 ,  G01N27/72 ,  G01V3/10 ,  G01N27/02

Abstract: An arrangement for detecting metallic particles carried by a fluid includes a metallic probe member which surrounds an elongated passage through which the fluid flows and which is constituted by a split tube having two marginal portions delimiting a gap which extends along said passage and completely separates the marginal portions from one another. Capacitors are arranged at the gap and alternating electric current is caused to flow in the probe member around the passage so that the probe member and the capacitors form a tank circuit having resonance characteristics that are influenced by any inclusion then present in the passage in a manner dependent on the electromagnetic properties of the inclusion. The character of any metallic particle then present in the passage is determined from variations in the alternating electric current that reflect the influence of such metallic particle on the resonance characteristics.

公开(公告)号：BR8907863A

公开(公告)日：1991-10-01

申请号：BR8907863

申请日：1989-12-22

Applicant: UNITED TECHNOLOGIES CORP

Inventor： VERONESI WILLIAM A ,  WEISE ANDREW P ,  REED ROBERT W ,  RINGERMACHER HARRY I

IPC: G01N15/06 ,  G01N27/02

公开(公告)号：AU4848790A

公开(公告)日：1990-08-01

申请号：AU4848790

申请日：1989-12-22

Applicant: UNITED TECHNOLOGIES CORP

Inventor： VERONESI WILLIAM A ,  WEISE ANDREW P ,  REED ROBERT W ,  RINGERMACHER HARRY I

IPC: G01N15/00 ,  G01N15/06 ,  G01N27/22 ,  G01N27/72 ,  G01V3/10 ,  G01N27/02

Abstract: An arrangement for detecting metallic particles carried by a fluid includes a metallic probe member which surrounds an elongated passage through which the fluid flows and which is constituted by a split tube having two marginal portions delimiting a gap which extends along said passage and completely separates the marginal portions from one another. Capacitors are arranged at the gap and alternating electric current is caused to flow in the probe member around the passage so that the probe member and the capacitors form a tank circuit having resonance characteristics that are influenced by any inclusion then present in the passage in a manner dependent on the electromagnetic properties of the inclusion. The character of any metallic particle then present in the passage is determined from variations in the alternating electric current that reflect the influence of such metallic particle on the resonance characteristics.