Method for determining the proportion of a gas constituent contained in a gas mixture
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United States of America Patent
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-
Dec 16, 2003
Grant Date -
Jan 2, 2003
app pub date -
Jul 18, 2002
filing date -
Jan 20, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An asynchronous motor is used in the process for determining the proportion of a gas constituent, especially water vapor, contained in a gas mixture. The asynchronous motor drives a delivery device for circulating the gas mixture that is used for treating foodstuffs. The difference between the rotational speed, which occurs while the delivery device is driven, and the synchronous rotational speed, i.e. the slip, is used as a measure for the sought proportion of the gas constituent at respectively established pressure and temperature values of the gas mixture.
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