Reference electrode for potentiometric measurements, and...

Details Reference electrode for potentiometric measurements, and... Reference electrode for potentiometric measurements, and...

2005-09-27

2009-12-15

Nguyen, Nam X (Department: 1795)

Chemistry: electrical and wave energy

Apparatus

Electrolytic

C204S433000, C205S787500, C073S30400R, C073S29000R, C073S313000

Reexamination Certificate

active

07632385

ABSTRACT:
A reference electrode for potentiometric measurements has a housing (2) with a hollow space (4) containing a liquid reference electrolyte (6) as well as a conductor element (8) immersed in the reference electrolyte. In addition, the housing has a diaphragm (12) through which the reference electrolyte can be brought into contact with a measuring medium (10) outside of the housing. Furthermore, means are provided to effect an outflow of the reference electrolyte through the diaphragm. A first electrical contact element (20, 36) is arranged in the hollow space in such a manner that the contact element is immersed in the reference electrolyte as long as the fill level (18) of the reference electrolyte does not fall below a threshold value (FS), and that the contact element is not immersed in the reference electrolyte if the fill level falls short of the threshold value.

REFERENCES:
patent: 4284343 (1981-08-01), Junghanns
patent: 4360415 (1982-11-01), Brezinski
patent: 5070346 (1991-12-01), Mochizuki et al.
patent: 6495012 (2002-12-01), Fletcher et al.
patent: 6894502 (2005-05-01), Feng
patent: 2003/0150726 (2003-08-01), West et al.
patent: 35 13 751 (1986-03-01), None
patent: 37 02 501 (1987-08-01), None
patent: 196 39 372 (1998-04-01), None
patent: 2 370 646 (2002-07-01), None

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