Polarographic oxygen sensor

Details Polarographic oxygen sensor Polarographic oxygen sensor

G - Physics

01

N

324/27

G01N 27/409 (2006.01) G01N 27/48 (2006.01)

Patent

CA 1320249

ABSTRACT OF THE DISCLOSURE The cathode sub-assembly of a polarographic sensor comprises an elongate housing with a longitudinal opening therethrough and with noble metal wires extending completely through the opening, the wires held symmetrically in the longitudinal opening by an extensive plug of glass which is solidified in situ in sealing contact with the wires and with the wall of the longitudinal opening. A suitable tubular anode is provided through which the cathode sub-assembly protrudes, and a flexible membrane of an inert material, which is permeable to gas and impermeable to water vapour and other than gaseous dissolved solutes, is secured in sealed relationship over the anode and the cathode, with a film of electrolyte bathing the anode and the cathode and contained by the membrane.

616357

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