Measuring and testing – Instrument proving or calibrating – Liquid level or volume measuring apparatus
Reexamination Certificate
2008-04-08
2008-04-08
Noland, Thomas P. (Department: 2856)
Measuring and testing
Instrument proving or calibrating
Liquid level or volume measuring apparatus
C073S001790, C073S863010, C702S094000, C702S150000
Reexamination Certificate
active
11268867
ABSTRACT:
The present methods and systems include aligning at least two sensors with one or more known locations, selecting at least two of the at least two sensors, electrically driving the probe, based on signals received by the selected sensors, determining whether the probe is aligned with the known location(s), and, optionally adjusting the probe position based on the determination. The methods and systems also include repeatedly returning to electrically driving and positioning the probe until the probe is aligned with the selected sensors, and/or repeatedly returning to selecting at least two of the at least two sensors. The relative position of the probe with respect to the selected sensors may also be determined.
REFERENCES:
patent: 4523382 (1985-06-01), Werner et al.
patent: 5432503 (1995-07-01), Pekar
patent: 5929643 (1999-07-01), Sakai et al.
patent: 6076953 (2000-06-01), Oakley
Harazin Richard Raymond
Zweifel Ronald Alvin
Noland Thomas P.
PerkinElmer LAS, Inc.
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