Method and a device for measuring concentrations
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United States of America Patent
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-
Aug 16, 2005
Grant Date -
Jul 31, 2003
app pub date -
Jan 24, 2003
filing date -
Jan 25, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and a device for measuring concentrations especially in a pulp suspension, from which a sample has been taken. The sample is collected in a measuring vessel, in which a piston is guided upwards and downwards in order to press the sample from each direction through a measuring sensor collected at the side of the measuring vessel via communicating tubes connected in an upper and a lower position to the measurement vessel, whereby the sample is stirred totally to eliminate flocculation in the same. Measurement of the concentration of the sample is made either during the upwards and downwards movement of the piston in the measuring vessel and first occurs when the speed of the sample through the measuring sensor is constant and the sample has been homogenized after at least some movement upwards and downwards of the piston.
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