Measuring and testing – Liquid level or depth gauge – Immersible electrode type
Reexamination Certificate
2008-06-13
2010-11-23
Williams, Hezron (Department: 2856)
Measuring and testing
Liquid level or depth gauge
Immersible electrode type
C340S620000, C073S29000R
Reexamination Certificate
active
07836763
ABSTRACT:
Methods, systems, and computer program products for measuring a capacitance between a probe and a liquid, pausing movement of the probe based on a rate of change of the capacitance, further measuring the capacitance while the probe is paused, and, based on the further measurements, performing one or more of: resuming movement of the probe, determining a position of the probe, aspirating liquid into the probe, and dispensing from the probe. Resuming movement of the probe can include returning iteratively to measuring a capacitance, and the further measuring can be performed for a time interval that can vary based on the further measured capacitance(s), a probe movement characteristic, and/or a sampling rate.
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Harazin Richard R.
Zweifel Ronald A.
Lando & Anastasi LLP
PerkinElmer LAS, Inc.
Shah Samir M
Williams Hezron
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