PASSIVE BREATH SAMPLING
(No Mouthpiece Required)
Step 1:
Power On
Power on the PAS Vr. a minute or so before you plan to test.
(INITIALIZE)
The orange HTR lamp will cycle on and off as the thermostat
regulates the fuel cell temperature.
Step 2:
Battery Check
Check that the red low-battery (BAT) lamp is not flashing. If it is, the
battery should be replaced before using the PAS Vr.
Step 3:
Zero Check
If you are unsure if the fuel cell has recovered from the previous
(AIR BLANK)
sample, check a sample of alcohol-free air and verify that no bars
light up in the display. Observe for about 15-20 seconds. If bars do
light up, wait a minute, then try again. In severe cases refer to the
section on Overload Recovery on page 14.
Step 4:
Set Mode
Set sampling mode switch to the
Passive
setting (PAS ON)
(See
switch on right side of instrument).
Step 5:
Subject Testing
Have subject talk (recite alphabet, recite name, address,
telephone number, etc.) or gently blow. Hold the device about 5-7
inches in front of the subject’s mouth. As subject is talking or
blowing, tap and release the sensor control switch. A green LED will
appear at the bottom of the display and the yellow pump
light in the
left upper corner comes on as the breath sample is collected (approx.
4-5 seconds). If alcohol is present the bar-graph display will begin to
light up within a few seconds.
Step 6:
Peak Reading
After the yellow light goes out you may remove the device from the
breath stream. Observe the bar-graph display for 5-15 seconds. If
there is alcohol present, the bars in the main display will start
lighting up with a peak reading within about 2-10 seconds. If bars
light up record the number of bars that light indicating the
approximate concentration of breath alcohol (BrAC).
Step 7:
PAS Vr. Off
After noting/recording the peak reading, press the control
button again and release it immediately. The Sensor main display
will turn off, and the fuel cell will recover. Always turn the PAS
Sensor off after recording the reading.
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