PAS Systems International PAS V Instruction Manual
Also see for PAS V: Calibration manual
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Contents | 
10If the PAS V is used in still air at the optimum distance of 5-7 inches from thesubject's mouth, the chart below will give you an approximate indication of thesubject's breath alcohol concentration (BrAC). Roughly, the readings can beinterpreted as follows:ApproximateBrAC (%)NOTE: In some situations it is not practical to get the PAS V as close as 5-7inches from the subject's mouth. The PAS can be used at greater distances, butreadings will be lower. As a rule of thumb, one less bar will light up for every 2inches beyond the optimum 5-7 inches. Using the PAS V at distances greaterthan 10 inches is not recommended for breath-alcohol sampling, because of theeffect of drafts.Low Temperature OperationAt low temperatures, fuel cells take longer to reach their peak readings of alcohollevel. They also take longer to recover from each positive sample before you cantake another. To overcome this problem, your PAS V includes a thermostaticallycontrolled heater that maintains a fuel cell temperature of 104◦F (40◦C).Since the PAS V is normally used at night, the heater comes on automaticallywhenever you turn on the flashlight. The fuel cell reaches its operatingtemperature within a few minutes, although the exact time obviously depends onhow cold it was to start with. The orange HHHTTTRRR indicator cycles on and off as thethermostat regulates the fuel cell temperature.RRREEEDDD bars litSubject MAY exceed the 0.08 or 0.10%BrAC legal limit for drivers of privatevehiclesYYYEEELLLLLLOOOWWW bars lit Subject MAY exceed the 0.04% BrAClegal limit for certain commercial vehiclesand aircraftAlcohol is presentGGGRRREEEEEENNN bars lit |
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