Measuring and testing – Instrument proving or calibrating – Fluid pressure
Reexamination Certificate
2005-03-15
2005-03-15
Williams, Hezron (Department: 2856)
Measuring and testing
Instrument proving or calibrating
Fluid pressure
C073S001620, C264S040500, C425S149000
Reexamination Certificate
active
06865924
ABSTRACT:
In a drift detection method for detecting drift in a pressure detection value output from a pressure detector, pressure is detected by the pressure detector at a preset detection point in a pressure-uncontrolled region in an arbitrary molding cycle. The detected pressure is set as a reference pressure. Pressure is detected by the pressure detector at the same detection point in the pressure-uncontrolled region in a subsequent molding cycle. A deviation of the detected pressure from the reference pressure is obtained. When the deviation is greater than a preset value, it is determined that a drift is present, and processing for coping with the drift is performed.
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Morozumi Susumu
Usui Kazuo
Fayyaz Nashmiya
Nissei Plastic Industrial Co. Ltd.
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