Method and apparatus for determining o2 and n2o in gas mixtures

Details Method and apparatus for determining o2 and n2o in gas mixtures Method and apparatus for determining o2 and n2o in gas mixtures

G - Physics

01

N

G01N 27/416 (2006.01) G01N 27/49 (2006.01) G01N 33/00 (2006.01)

Patent

CA 2286373

A method for determining relative amounts of O2 and N2O in gas mixtures by quantitative electrochemical reaction including feeding a gas mixture containing O2 and N2O to a zinc-air cell having electrodes connected to a circuit consisting of a plurality of diodes and resistors, which circuit is set to have an electrochemical working range corresponding to each of the O2 and N2O; and measuring current flowing in the respective working range to determine the relative proportions of O2 and N2O in the gas mixture. An electrochemical cell including a casing capable of containing a gas mixture, including O2 and N2O a zinc-air cell in the casing, and a circuit connected to electrodes of the zinc-air cell, the circuit containing a plurality of diodes, resistors and tap points; means for measuring current to determine the relative proportions of O2 and N2O in the gas mixture.

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