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General Beta Gauge Advantages• Seasonal and geographical correction factors are notneeded.• It is not necessary to ever calibrate the betameasurement system in the field.• BAMs are calibrated to provide excellent agreementwith FRM gravimetric standards when properlymaintained and operated.• Beta technology is virtually unaffected by thechemical composition of the sampled particulate.6/9/2009 20
Beta Gauge Safety• The BAM-1020 contains a small amount of 14 C(Carbon 14), a naturally occurring radioactive isotopeof carbon, in the form of barium carbonate.• Activity level of the 60 µCi 14 C source is similar toseveral commercial smoke detectors, and is licensedwith the NRC under the same provisions.• Sources with activity under 100 µCi require nospecial government licensing to own.• Met One Instruments has an “Exempt DistributionLicense” from the US-NRC to distribute the betasources.6/9/2009 21
Page 1 and 2: BAM-1020Beta Attenuation Mass Monit
Page 3 and 4: Overview - Topics of Discussion•
Page 5 and 6: What is the PM2.5 FEM Configuration
Page 7 and 8: What is the PM2.5 FEM configuration
Page 9 and 10: Data Example 1 - PM10 and PM2.5 Lev
Page 11 and 12: Data Example 3 - PM2.5 Slope / Offs
Page 13 and 14: Typical older unimproved unit compa
Page 15 and 16: What is the PM2.5 FEM configuration
Page 17 and 18: Theory of Operation• At the begin
Page 19: Mass Calculation• DEFINITIONS:- I
Page 23 and 24: BAM-1020 Tape Transport6/9/2009 23
Page 25 and 26: Simplicity - Measurement System•
Page 27 and 28: Critical Checks• Leak Check, Flow
Page 29 and 30: BAM-1020 Span Check• The BAM-1020
Page 31 and 32: Measurement Challenges• Enclosure
Page 33 and 34: Electromagnetic Interference• Sou
Page 35 and 36: Supplemental Materials• BAM-1020

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