Device for the simultaneous detection of dissimilar gas...

Details Device for the simultaneous detection of dissimilar gas... Device for the simultaneous detection of dissimilar gas...

G - Physics

01

N

G01N 27/417 (2006.01) G01N 27/49 (2006.01) G01N 33/00 (2006.01)

Patent

CA 2082194

Device for the simultaneous detection of dissimilar gas components Abstract The device for the simultaneous detection of dissimilar gas components contains a number of electrochemical, three-electrode measuring cells with a common electrolyte, that are formed from a number of working electrodes with a common counter-electrode and a common reference electrode. Measured values are generated with the aid of a potentiostatic evaluation circuit that also adjusts and sets the potentials at the working electrodes. The current signals correlated with the gas concentrations to be measured are displayed with the aid of current-measuring instruments 111 .. 11n in the lines to the working electrodes 51 .. 5n. At the same time it is important that all three-electrode measuring cells have a common counter-electrode 3 and a common reference electrode 4, and that the potentiostatic evaluation circuit 6 contains control loops 71 .. 7n which maintain the potentials of the working electrodes 51 .. 5n constant with respect to the reference electrode 4, both individually and independently of each other. (Fig. 1) Le A 28 633

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