公开(公告)号：CA2069752A1

公开(公告)日：1991-07-25

申请号：CA2069752

申请日：1991-01-22

Applicant: ROSEMOUNT INC

Inventor： OKEL MARK C ,  WOOD WAYNE B ,  WEST BARRY R

IPC: G01N27/02 ,  G01N27/72 ,  G01R27/22 ,  G01N27/06

Abstract: PCT/US91/00400 An inductive conductivity sensor (10) is immersed in a liquid to measure its conductivity. The sensor (10) comprises a transducer (18,20,22) for generating a changing magnetic field and for inductively measuring an electric current induced in the liquid by the changing magnetic field. The transducer (18,20,22) has an external surface facing the liquid. A elastic membrane (30) separates the external surface from the liquid. The elastic membrane (30) is periodically inflated and deflated to deform its outer shape and thereby remove deposits formed on the membrane (30).

公开(公告)号：FI100363B

公开(公告)日：1997-11-14

申请号：FI923171

申请日：1992-07-09

Applicant: ROSEMOUNT INC

Inventor： WEST BARRY R ,  WOOD WAYNE B ,  OKEL MARK C

IPC: G01N27/02 ,  G01N27/72 ,  G01R27/22

公开(公告)号：AU2011343777B2

公开(公告)日：2016-02-18

申请号：AU2011343777

申请日：2011-12-15

Applicant: ROSEMOUNT INC

Inventor： FENG CHANG-DONG ,  BENTON BARRY W ,  ANDERSON DAVE ,  YANG FONG S ,  WOOD WAYNE B

IPC: C12M1/34

Abstract: A pH sensing bioreaction system is provided. The system includes a bioreaction container (51) having a plastic wall (50) and a pH sensor (40, 60, 80, 100, 120) attached to the plastic wall (50). The pH sensor (40, 60, 80, 100, 120) includes a sensor body (82) having a flange (76) that is sealingly attached to the plastic wall (50). The sensor body (82) has a reference electrolyte (142) therein and a first sensing element (152) disposed in the reference electrolyte (142). The first sensing element (152) is configured to contact both the reference electrolyte (142) and a sample solution (52) inside the bioreaction container. A second sensing element (62, 92, 148) is positionable into an interior of the bioreaction container (51). The pH sensor (40, 60, 80, 100, 120) has a plurality of configurations that include a booted configuration in which at least one sensing element is isolated from the interior of the bioreaction container (51), and a service configuration in which the at least one sensing element is fluidically coupled to the interior of the bioreaction container (51).

公开(公告)号：NO303888B1

公开(公告)日：1998-09-14

申请号：NO922909

申请日：1992-07-22

Applicant: ROSEMOUNT INC

Inventor： WEST BARRY R ,  WOOD WAYNE B ,  OKEL MARK C

IPC: G01N27/02 ,  G01N27/72 ,  G01R27/22

Abstract: An inductive conductivity sensor is immersed in a liquid to measure its conductivity. The sensor comprises a transducer for generating a changing magnetic field and for inductively measuring an electric current induced in the liquid by the changing magnetic field. The transducer has an external surface facing the liquid. A elastic membrane separates the external surface from the liquid. The elastic membrane is periodically inflated and deflated to deform its outer shape and thereby remove deposits formed on the membrane.