公开(公告)号：US11719666B2

公开(公告)日：2023-08-08

申请号：US17024722

申请日：2020-09-18

Applicant: ABB Schweiz AG

Inventor： Benjamin Carr ,  Kenton Knight

IPC: G01N27/403 ,  G01N27/30

CPC classification number: G01N27/301 ,  G01N27/302 ,  G01N27/4035

Abstract: A reference electrode system for a pH-sensor system includes: a first junction having a membrane with a sealed side; a reference electrode, the reference electrode and/or an electrically conducting wire of the reference electrode being covered completely except for an end portion of the reference electrode, by a sleeve; and a tube that is arranged, at least partly, around the reference electrode, the electrically conducting wire, and the sleeve, the tube having a closed end which is arranged near the end portion of the reference electrode.