Title:
LIQUID QUANTITY MANAGEMENT SYSTEM
Document Type and Number:
Japanese Patent JP3879999
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid quantity management system capable of highly accurately processing calibration at a sufficiently practical level in a short period by reducing variations in data for calibration due to environmental changes such as temperature changes.
SOLUTION: When a conversion table which specifies the relation between liquid levels of a liquid storage tank 1 and liquid quantities, a liquid quantity gradient (ΔQ/ΔH) is computed on the basis of both the quantities of supplied liquid (ΔQ) supplied from a measuring device 3 and liquid level changes (ΔH) before and after the supply of the liquid detected by a liquid level detector 2 to process calibration through the use of the liquid quantity gradient data. To be concrete, the liquid quantity gradient is bound to one liquid level among the liquid level changes, and a liquid quantity at the liquid level after calibration is computed on the basis of the liquid quantity gradient to create a calibration conversion table which specifies the relation between liquid levels of the liquid storage tank 1 and liquid quantities after calibration. The liquid quantity is computed and displayed from the liquid level on the basis of the calibration conversion table.
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Inventors:
Maeshiba, Shinsuke
Application Number:
JP2003000393049
Publication Date:
November 17, 2006
Filing Date:
November 21, 2003
Export Citation:
Assignee:
SHOWA KIKI KOGYO CO LTD
International Classes:
G01F25/00; B67D7/78; G01F25/00; B67D7/78; (IPC1-7): G01F25/00; B67D5/60