8
STEP 5:
SUBJECT SAMPLING
Encourage conversation to ensure the subject
is exhaling when the
PAS V takes a sample.
Summary:
D
istance:
Less than 10 inches (5-7 inches optimal)
D
irection
:
Point intake port at mouth
T
alking
:
Make sure subject is speaking.
REMEMBER "
DDT
"
Under certain circumstances, if the subject is willing, you may have the subject
take a deep breath and blow slowly and directly toward the sensor’s intake port
while sampling. This will confirm the presence (or absence) of alcohol. Do NOT
hold closer than 4 inches, and do NOT allow the subject to blow in hard bursts.
STEP 6:
START SAMPLING
To take a sample, press the PAS Sensor control button and
release
it immediately
. The GREEN sensor indicator will come on to show
that the sensor is on. The yellow PMP indicator will also turn on for
the 5 seconds that the pump is running and taking the sample. While
the pump is running it is important to keep the subject talking for the 5
seconds. Therefore ask questions that require lengthier answers than
yes or no.
Once the pump has stopped running, it is no longer necessary
to hold the flashlight in position.
STEP 7:
PEAK READING
The air pump draws air through the fuel cell for about 5 seconds. If
there is alcohol present the bars in the main display will start lighting
up, with a peak reading in about 2-10 seconds.
STEP 8:
PAS V OFF
After noting the peak reading, press the sensor control button again
and
release it immediately
. The Sensor and main display will turn
off, and the fuel cell will recover. The microcontroller will
automatically turn off the sensor after about 45 seconds and reset for
the next sample.
