Measuring and testing – Instrument proving or calibrating – Gas or liquid analyzer
Reexamination Certificate
2007-09-18
2007-09-18
Williams, Hezron (Department: 2856)
Measuring and testing
Instrument proving or calibrating
Gas or liquid analyzer
C073S023250
Reexamination Certificate
active
10780825
ABSTRACT:
An apparatus, method, and system for ensuring a more accurate and precise calibration of gas or liquid analyzers using gas emitting permeation tubes for the production of calibration samples. The permeation devices are placed in a temperature-controlled housing to ensure that calibration samples are produced at the optimal temperature for such devices. The housing temperature may be controlled by a semi-conductor heating and cooling device. The apparatus also controls the flow rate of the medium that is mixed with the impurities released from the permeation devices, yielding a more accurate, precise, and reliable calibration. The sample can be conveyed to the calibration device/instrument by hooking the apparatus directly to the calibration device. The invention also contemplates a novel method of calibrating apparatuses using a device kept at the optimal temperature, using a constant flow rate that minimizes variations in the calibrations.
REFERENCES:
patent: 3924442 (1975-12-01), Kerho et al.
patent: 3976450 (1976-08-01), Marcote et al.
patent: 4399942 (1983-08-01), Chand
patent: 4958529 (1990-09-01), Vestal
patent: 4977776 (1990-12-01), Shindo et al.
patent: 5239856 (1993-08-01), Mettes et al.
patent: 5457983 (1995-10-01), Sauvageau et al.
patent: 5665314 (1997-09-01), Berger et al.
Entech Instruments, Inc. online data (http://www.entechinst.com/about.php).
Bruce Wallace A.
Gilbert Billy G.
Hirsch Jeffrey A.
Air Liquide America L.P.
Cronin Christopher J.
Fitzgerald John
Williams Hezron
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