公开(公告)号：AT125946T

公开(公告)日：1995-08-15

申请号：AT89902875

申请日：1989-02-07

Applicant: ROSEMOUNT INC

Inventor： SITTLER FRED C ,  NETI RADHAKRISHNA M ,  TOY ADRIAN C

IPC: G01N27/30 ,  G01N27/42 ,  G01N27/416

公开(公告)号：CA1316715C

公开(公告)日：1993-04-27

申请号：CA590423

申请日：1989-02-08

Applicant: ROSEMOUNT INC

Inventor： SITTLER FRED C ,  NETI RADHAKRISHNA M ,  TOY ADRIAN C

IPC: G01N27/30 ,  G01N27/42 ,  G01N25/64 ,  G01N27/416

Abstract: A solid state, thin film moisture sensing element is disclosed. The sensing element is fabricated by thin film deposition of at least a pair of two layer electrodes on an insulating surface. The active surface of the element is then coated with a layer of hygroscopic material and placed in a diffusion limiting housing to complete the sensing element assembly.