Breath alcohol measuring apparatus having a sample intake channel and a temperature sensor mounted therein
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United States of America Patent
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Oct 15, 2002
Grant Date -
N/A
app pub date -
Mar 24, 2000
filing date -
Mar 26, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A breath alcohol measuring apparatus includes a sample intake channel (7) for receiving the respiratory gas sample and a temperature sensor mounted in the sample intake channel (7). The breath alcohol measuring apparatus is so improved that the influence of the mouthpiece on the detection of the temperature of the respiratory gas sample is substantially eliminated. The temperature sensor is configured as an infrared optical thermometer (14) with a filter (10) transmissive for the infrared radiation. The filter (10) is disposed in the sample intake channel (7).
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