Measuring and testing – Gas analysis – Breath analysis
Reexamination Certificate
2007-02-06
2007-02-06
Cygan, Michael (Department: 2855)
Measuring and testing
Gas analysis
Breath analysis
Reexamination Certificate
active
11037591
ABSTRACT:
A breath alcohol measuring device is provided with a pressure sensor (2) for detecting a signal representative of the breathing air flow and with an electrochemical sensor (1) for detecting a signal representative of the alcohol content in the breathing air and with evaluating means for processing the signals and for determining the breath alcohol concentration. Such a breath alcohol measuring device has a simple design and high measuring accuracy. The pressure sensor (1) and the electrochemical sensor (2) are connected for this purpose with a delta-sigma analog-digital converter (8), which converts the sensor signals directly into digital measured values for determining the alcohol concentration. The pre-amplifiers needed hitherto become unnecessary as a result, which has a number of advantages.
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Kater Theodor
Stock Burkhard
Cygan Michael
Dräger Safety AG & Co. KGaA
McGlew & Tuttle PC
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