H2s gas sensor device

Details H2s gas sensor device H2s gas sensor device

G - Physics

01

N

324/28

G01N 27/416 (2006.01) G01N 27/30 (2006.01)

Patent

CA 1058707

IMPROVED H2S DIRECT GAS SENSOR ABSTRACT A combined specific ion and reference electrode structure having an air gap, gas permeable membrane and in which the active, conducting solution has a surface tension and boiling point which are great enough that with equal ambient pressures on both sides of the membrane the active solution will neither leak nor evaporate rapidly through the membrane at the temperature range over which the electrode structure is operated, namely -40°C. to 60°C. In the preferred embodiment the active solvent as well as the reference solvent is selected from among the class consist- ing of ethylene glycol, propylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, hexylene glycol, propylene carbonate, dimethyl sulfoxide and dimethyl formamide.

263763

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