Apparatus and method for on-line monitoring of a liquid density
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United States of America Patent
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Jun 25, 2002
Grant Date -
N/A
app pub date -
Nov 29, 1999
filing date -
Nov 29, 1999
priority date (Note) -
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Abstract
An apparatus and a method for on-line, real-time monitoring of a liquid density in a chemical process are provided. The apparatus is constructed by an upright, cylindrical housing that has a cavity defined therein for holding a liquid, and a density indicator mounted inside the cavity and positioned by at least two positioning guides which are fixedly attached to the housing wall. The apparatus may further include a stabilizing plate positioned at the bottom portion of the cylindrical housing for flowing a liquid in a downward direction such that the liquid flow does not cause a turbulent in the cavity so as to improve the stability and accuracy of the liquid density reading. The liquid density can be read either manually by a measuring stick on the density indicator against a graduated scale marked on the cylinder wall, or by optical sensors automatically which are connected to a process controller or an alarm panel to alert an operator or to stop the process machine when the liquid density falls outside of an allowable range.
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