METHOD FOR DETECTING PRESENCE OF LIQUID MATERIAL
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United States of America Patent
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Issued Date -
Dec 26, 2013
app pub date -
Jun 20, 2013
filing date -
Jun 25, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The object of the present invention is to provide a method for detecting the presence of liquid material which can reliably detect the presence of the liquid material stored in a liquid material storage tank without depending on the viscosity of the liquid material, and prevent process failures caused by the shortage of the liquid material supplied to a place where the liquid material is used, and the present invention provides a method for detecting the presence of liquid material in a liquid material storage tank when the liquid material filled in the liquid material storage tank is supplied to a place where the liquid material is used through a buffer tank, wherein the method includes: a flow rate-measuring step in which the flow rate of a fluid flowing through a liquid material-supplying line is continuously measured using a fluid flow meter which is fixed in the liquid material-supplying line for supplying the liquid material in the liquid material storage tank into the buffer tank; and a presence-detecting step for the liquid material in which the presence of the liquid material in the liquid material storage tank is detected based on the flow rate of the fluid measured by the fluid flow meter.
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