G - Physics – 01 – N
Patent
G - Physics
01
N
324/25.5
G01N 27/62 (2006.01)
Patent
CA 1045205
ABSTRACT OF THE DISCLOSURE: This invention relates to a method of and a system for detecting the activity of gaseous anhydrides in an oxygen-bearing gas. A solid state electrolyte element has oxy-anions of the ele- ment forming the anhydride to be detected. A reference electrode is in contact with the electrolyte element and a detection electrode is remote from the reference electrode but also in contact with the electrolyte element, the electrolyte and detection electrode being arranged such that they are free to come into contact with the anhydrous gas, whereas the reference and detection electrodes are arranged such that a difference of potential occurs therebetween when a sample of the anhydride to be detected is contacted with the detection electrode and with the electrolyte element. The electro- lyte element is heated to a temperature such that a logarithmic variation in the concentration of the anhydride to be detected causes a proportional and substantially linear variation in the difference of potential, the temperature being below the fusion temperature of the electrolyte element. Finally, oxygen content variations in the gas being measured are compensated. A potentio- metric measurement device is connected to the electrodes for mea- suring the activity of the anhydride by measuring the difference of potential.
305134
Chamberland Andre M.
Gauthier Michel
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