Breath testing system

Details Breath testing system Breath testing system

G - Physics

01

N

354/127, 73/69

G01N 27/04 (2006.01) G01N 21/27 (2006.01) G01N 33/497 (2006.01)

Patent

CA 1122437

Abstract of the Disclosure A breath tester includes an electronic detector providing an information signal with an amplitude level which varies as a function of the alcohol content in the breath under test. An anomaly detector circuit stores a signal related to the peak of the information signal, and continually compares this peak value with the instantaneous value of the information signal. When the difference between the peak signal level and the instantaneou signal level exceeds a preset amount, the output display of the breath tester is modified to indicate the analysis process has been disturbed by an anomalous chemical substance.

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