7
Making Measurement
Requirements
– Use a new mouthpiece for each test subject.
– Do not expose the sensor to high alcohol concentrations, e.g. by
rinsing the mouth with high-proof alcoholic beverages just before
starting the measurement. This reduces the sensor service life.
– Keep sufficient distance from transmitters and mobile phone an-
tennas.
Requirements for the Test Subject
– Maintain a waiting period of at least 15 minutes after drinking al-
cohol!
– Alcohol residues within the mouth may cause incorrect measure-
ment values. Incorrect measurements can also happen after the
test subject burps or vomits, drinks aromatic beverages (e.g. fruit
juices), uses alcoholic mouth spray, or consumes medical syrup
or drops. Rinsing out the mouth with water or non-alcoholic bev-
erages will not help reduce the waiting period!
Before sampling, the test subject should breathe normally and calmly.
Rapid inhaling and exhaling through the mouth is to be avoided.
The test subject must be able to provide the required minimum respi-
ratory volume of 1.2 L. For this purpose, the breathing flow must be
constant for a certain minimum blowing period.
Automatic Measurement
The sampling is automatically triggered after reaching the minimum
respiratory volume and the minimum blowing period.
Preparation
• Insert a new mouthpiece into the mouth-
piece connection (see page 6).
• Switch on the device (see page 6).
00933082_01.eps
Alcotest 3000
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