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method and arrangement for determining the alkoholkonzentration of blood by measuring the alkoholkonzentration and the moisture in the air
method and arrangement for determining the alkoholkonzentration of blood by measuring the alkoholkonzentration and the moisture in the air
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机译:通过测量酒精度和空气中的水分来确定血液的酒精度的方法和装置
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摘要
A method and apparatus for determining the alcohol concentration in the blood of a person by testing the person's breath, including, maintaining at least a minimum flow rate for the person's breath to form a test sample of the breath, measuring the alcohol amount in the test sample, measuring the increase in humidity in the test sample over ambient humidity and finding the ratio between the alcohol amount and the increase in humidity. This ratio is proportional to the actual alcohol concentration in the person's blood and cannot be disquised by a person wishing to falsify the results of the test.
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