Polarographic oxygen sensor

Details Polarographic oxygen sensor Polarographic oxygen sensor

1989-09-05

1991-07-09

Tung, T.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

65 36, 65 45, 65 591, 65 596, 20415317, 204286, 204297R, G01N 27404

Patent

active

050303368

ABSTRACT:
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 vapor 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.

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