How the PAS Vr. Works
When you use the PAS Vr., a small pump draws a breath sample through an
electrochemical sensor (fuel cell) that generates a small electrical current in the presence
of alcohol vapor. This current is amplified electronically and used to drive a multicolored
bar graph and numeric display
. The number of bars lit in the display indicated the
alcohol concentration in the breath sample. The proprietary sensor provides high
precision, short analysis time, and long-term stability. Only true alcohol content is
recorded even when exposed to other breath interfering substances, for example,
acetone.
The PAS Vr. is powered by a 9-volt alkaline battery.
We want you to get the best possible results from your PAS Vr. Please take the time to
study this manual and to practice using the instrument before using it on patrol, in your
company’s U.S. Department of Transportation (DOT) Alcohol Misuse and Prevention
Program, or Zero - Tolerance program.
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