Method for measuring gas content and a gas content measuring device
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United States of America Patent
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Jan 11, 2000
Grant Date -
N/A
app pub date -
May 19, 1998
filing date -
May 21, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a method for measuring gas content in a fluid, such as papermaking pulp or coating paste, and to a gas content measuring device. Pressure variations generated by a pump, for instance, are to occur in the fluid. Travel time, phase and/or attenuation of the microwave signal (20) are measured with the gas content measuring device while the signal (20) penetrates through the fluid (13), and the gas content is determined on the basis of changes in travel time, phase and/or attenuation of the microwave signal (20) caused by pressure variations of the fluid (13).
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