Measuring and testing – Gas analysis – Solid content of gas
Reexamination Certificate
2006-09-26
2006-09-26
Cygan, Michael (Department: 2855)
Measuring and testing
Gas analysis
Solid content of gas
C073S024030, C356S338000
Reexamination Certificate
active
07111496
ABSTRACT:
A particulate mass monitor includes two mass sensors, such as an optical sensor (e.g., a light scattering photometer or nephelometer) and a beta radiation attenuation sensor for substantially continuous monitoring of ambient particulate matter. During operation, the first mass sensor references the time-averaged measurement of the second mass sensor such that the second mass sensor calibrates the response of the first mass sensor. If the first sensor is an optical sensor, as it detects the presence of particulate matter within a fluid, the mass concentration measurement (e.g., signal output) provided by the optical sensor is altered using a ratio of concentration measurements of the second mass sensor and the optical sensor. The combined use of the two mass sensors provides accurate mass measurements of ambient particulate matter with a relatively high time resolution.
REFERENCES:
patent: 3177757 (1965-04-01), Polanyi
patent: 3266291 (1966-08-01), King, Jr.
patent: 3879992 (1975-04-01), Bartera
patent: 4017193 (1977-04-01), Loiterman
patent: 4710887 (1987-12-01), Ho
patent: 4827760 (1989-05-01), Saito
patent: 5349844 (1994-09-01), Lilienfeld
patent: 5434667 (1995-07-01), Hutchins et al.
patent: 5483080 (1996-01-01), Tam
patent: 6055052 (2000-04-01), Lilienfeld
patent: 6496258 (2002-12-01), Leipertz et al.
patent: 6955787 (2005-10-01), Hanson
patent: 2004/0066512 (2004-04-01), Politze et al.
patent: 2004/0233431 (2004-11-01), Ganz et al.
Lilienfeld, P., “Method for Continuous Monitoring of Particulates as Applied to the PM10Standard”, Quality Assurance in Air Space Pollution Measurement, Transactions, pp. 63-80, Oct. 1984.
Kramer Hansgerd
Lilienfeld Pedro
Chapin IP Law LLC
Chapin, Esq. Barry W.
Cygan Michael
LandOfFree
Methods and apparatus for monitoring a mass concentration of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods and apparatus for monitoring a mass concentration of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for monitoring a mass concentration of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3538785