Dräger Alcotest 6820 29
Use
3.3.2 Errors when giving the breath sample
If the volume of the breath sample is too
small,
Volume too small
will appear on the
display.
A short acoustic signal sounds and the light
flashes red.
To repeat, press the OK key.
After approx. 2 seconds, the device is ready for measuring.
In the case of very irregular exhalation, e. g.
sudden termination or suction at the end of
the breath sample, Invalid sample appears
on the display
A short acoustic signal sounds and the light
flashes red.
To repeat the measurement, press the OK-Taste. Time until it is
ready for another measurement: 4 to 30
seconds.
3.4 Additional sampling options
The functions can be switched on or off in the menu (see section 4 on
page 30), also in combination.
3.4.1 Passive sampling
With passive sampling, the sampling is initiated manually by the device
user. Possible applications include the testing of ambient air or the
breath of uncooperative (e. g. unconscious) persons for the presence
of alcohol.
To carry out passive sampling:
1. Switch on the device (see section 3.2.7 on page 27).
2. Hold the device which is ready for measuring into the air to be
analysed, without a mouthpiece.
3. Briefly press the OK key.
Display 1: No alcohol present
Display 2: Alcohol is present
4. Press the OK key for a new measurement.
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