Electricity: measuring and testing – Using ionization effects – For analysis of gas – vapor – or particles of matter
Patent
1992-03-13
1993-06-15
Harvey, Jack B.
Electricity: measuring and testing
Using ionization effects
For analysis of gas, vapor, or particles of matter
250382, G01N 2766
Patent
active
052202844
ABSTRACT:
In a method and a device for measuring the concentration of particles present in a gas, in which a gas stream is guided past a UV light source, the particles are ionized and filtered out and the resulting ionic current is measured, the gas flow required is produced by thermal convection using an internal or external heat source. A suitable internal heat source in this context is, for example, the UV lamp (2) itself, which heats the gas via a radiation absorber (5). The elimination of a mechanical pump reduces the space requirement, power consumption and susceptibility to faults of the measuring arrangement.
REFERENCES:
patent: 2898497 (1959-08-01), Cartnell et al.
patent: 4837440 (1989-06-01), Burtscher
Bulletin SEV/USE 80 (1989) 23, Dec. 2, 1989, pp. 1515-1519, H. Burtscher, "Dynamische Messung Von Partikeln Mittels Aerosol--Photomission".
Journal of Applied Physics, 53(5), May 1982, pp. 3787-3791, H. Burtscher, et al., "Probing Aerosols by Photoelectric Charging".
Zeitschrift fur Physikalische Chemie Neue Folge, Bd. 159, Jun. 1988, pp. 129-148, V. W. Robers, et al., "Photo-- and Thermoionisation Von Aerosolen".
Central Patent Index, Basis Abstracts Journal Section J. Jan. 1991, 91/049020/07, "Process and Equipment for Measurement of Microparticles in Liq.--in Which Liq. is Gasified and Particles are Charged by . . . ".
Soviet Inventions Illustrated, Section E1:Electrical, Mar. 11, 1987, pp. 12, 87-028482/04, "Rapid Monitoring Device E.G. for Pre-Smog Atoms Condition--Has Shutter to Modulate UV Radiation".
Soviet Inventions Illustrated, Section R:Electrical, May 21, 1980, D3569C/15, "Atmosphere Aerosol Sample Extraction Appts.--Has Ioniser Made as UV Light Source with Spiral Mounted On . . . ".
Byatt John A.
Ruegg Walter
Asea Brown Boveri Ltd.
Harvey Jack B.
LandOfFree
Method and device for measuring the concentration of particles i does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and device for measuring the concentration of particles i, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for measuring the concentration of particles i will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1046031