Measuring and testing – Instrument proving or calibrating – Gas or liquid analyzer
Reexamination Certificate
2006-09-27
2008-11-25
Rogers, David A. (Department: 2856)
Measuring and testing
Instrument proving or calibrating
Gas or liquid analyzer
C073S001060, C073S001070, C073S031050, C422S083000, C422S093000, C436S081000
Reexamination Certificate
active
07454945
ABSTRACT:
A calibration assembly generates elemental mercury and oxidized mercury for calibrating components of a mercury monitoring system, including making necessary adjustments to efficiencies of a mercury compound converter and an elemental mercury detector. The calibrator generates an elemental mercury sample having a known elemental mercury concentration, [Hg0]1and combines an oxidizing component with the elemental mercury sample, thereby producing a reduced concentration of elemental mercury [Hg0]2within the sample. The calibrator measures the concentration of elemental mercury [Hg0]2within the sample and calculates a difference between the known elemental mercury concentration, [Hg0]1and the reduced concentration [Hg0]2. The difference between [Hg0]1and [Hg0]2is substantially equal to the concentration of oxidized mercury produced by the calibrator. The concentration of oxidized mercury can also be calculated as the difference between elemental mercury detected after passing a sample stream containing oxidized mercury through a channel which includes the converter and the reduced concentration [Hg0]2detected after passing the sample stream through a channel which bypasses the converter. By providing oxidized mercury at calculated concentrations, the calibrator allows a user to calibrate continuous emission monitoring systems for accurate response to both elemental mercury and oxidized mercury.
REFERENCES:
patent: 4698314 (1987-10-01), Tao
patent: 5733786 (1998-03-01), Green
patent: 6690462 (2004-02-01), Seltzer
patent: 6830730 (2004-12-01), Rhodes
patent: 6863005 (2005-03-01), Lanier et al.
patent: 7285419 (2007-10-01), Shade et al.
patent: 7341667 (2008-03-01), Kennard et al.
patent: 7368289 (2008-05-01), Baldwin et al.
patent: 2003/0103206 (2003-06-01), Seltzer
patent: 2005/0061110 (2005-03-01), Schaedlich et al.
Grassi James H.
Kita Dieter
Marcotte Bryan A.
Socha Jeffrey
Chapin IP Law LLC
Rogers David A.
Thermo Electron, Inc.
LandOfFree
Mercury monitoring system and calibration does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mercury monitoring system and calibration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mercury monitoring system and calibration will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4038697