ALC Alert BT5500 Manual De Instrucciones página 7

1. Press the "On" button. The unit beeps once,
the "WAIT" indicator flashes, and the unit
begins a "warm-up" countdown from 14-to-0
or 6-to-0 (see Additional Information). You
must wait until the countdown is complete.
Proceed with step 2 only when the unit beeps
twice and the "BLOW" indicator flashes.
Note: If "SAT" (saturation) flashes after the
countdown is completed and the unit turns off,
the sensor is saturated. Simply reactivate the
unit to perform another warm-up countdown
cycle. If "SAT" appears again, repeat this
process as many times as necessary until
"SAT" no longer appears. In most instances,
2 or 3 reactivation cycles should clear the
"SAT" message. More reactivation cycles may
be required if saturation is extensive (see
Additional Information).
2. Blow into the vent. Blow continuously for
about 5 seconds, until the unit beeps 3 times
before displaying the results. Immediately as
you start to blow, "Err" (Error) flashes until
the unit beeps 3 times. Blow from between
your lips, as if gently cooling a spoonful of
soup. A distance of about half an inch to
one inch between the vent and the mouth is
suggested. (See figure A.)
Note: If you do not apply any breath at all, or if
you stop blowing before you hear 3 beeps, the
LCD flashes "Err" to indicate that you did not
apply any or sufficient breath through the vent.
If so, ignore the results and repeat the process.
3. Read the results. The %BAC results are
displayed on the LCD display for about
5 seconds after the reading is taken. The
results then flash for a few seconds until the
unit turns off automatically.
The results are shown in increments of 0.01,
ranging from 0.00 to 0.12. Results greater that
0.12 %BAC are displayed as "+.12".
Understanding the results
The BAC (Blood Alcohol Concentration)
represents the amount of ethyl alcohol in a
given volume of blood. For instance, having a
%BAC of 0.10 means that a person has 1 part
alcohol per 1,000 parts blood in the body.
The most commonly used measurements are
grams of ethanol per millilitre of blood (g/ml),
used in the United States of America (also
expressed as %BAC) and milligrams of ethanol
per millilitre of blood (mg/ml), used in much of
Europe (also expressed as promille).
For example, a reading of 0.05 %BAC on the
AlcAlert Breath Alcohol Detector is the same
as 0.05 g/ml or 50 mg/ml or 0.5 g/l or 0.5
promille.
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USING THE UNIT