公开(公告)号：ES2181838T3

公开(公告)日：2003-03-01

申请号：ES96119287

申请日：1996-12-02

Applicant: ABB INC

Inventor： HESS CHARLES J ,  SPRIGGS DONALD R ,  THOENI STEWART

IPC: G01N27/28 ,  G01N27/401 ,  G01N27/403 ,  G01N27/36

Abstract: An electrochemical sensor (10) is disclosed wherein an ion impermeable plug (30) is interposed between the adjacent faces of the large plugs (24) that are used in the salt bridge. The salt bridge also includes a solid cylindrical plug that passes through the ion impermeable plug to thereby interconnect the adjacent large plugs. The large plugs have a central bore for receiving the glass sensor electrode (16). The impermeable plug has protrusions (40) to provide a better seal between the impermeable plug and the glass sensor electrode and the impermeable plug and the housing (12) in which the salt bridge is inserted. The sensor includes a rigid liner (60) between the large plugs and the glass sensor electrode to act as a barrier to prevent damage to this sensor electrode during and after impregnation.