Air Monitoring - Panasonic PT-DZ12000U Operating Instructions Manual
3-chip dlp-based projecto
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Also See for PT-DZ12000U:
- Service manual (240 pages) ,
- Brochure & specs (6 pages) ,
- Operating instructions manual (138 pages)
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Concentration
Concentration is activity per volume of air and may be stated
as dpm / cubic meter, ìCi / ml, or Bq / cubic meter. DAC
(Derived Air Concentration) is another way to express
airborne radioactivity concentrations as relative hazards.
DPM
1 uCi
3
1 DPM / M
1 uCi / ml
1 Bq
3
DPM / M
uCi / ml
3
Bq / M
DAC
1 DAC-h
1 DAC-h
1 DAC for Pu239 is 11.1 DPM / M
Calculate the number of DAC-h on a filter by this formula
# DAC-h
(Sample flow rate in LPM x 1.332E11 x DAC factor)
Calculate the DPM on a filter to reach 8 DAC-h
DPM = 8 DAC-h x flow rate in LPM x 1.33E11 x DAC factor
Calculate the DAC level on a filter from the # of DPM
DAC=
(DAC factor x LPM x time in minutes x 2.22E9)
AIR MONITORING
=
Sample CPM / Eff (CPM / DPM)
=
2.22 E6 DPM
=
4.5 E-13 uCi / ml
=
2.22 E12 DPM / M
=
1 DPS
=
CPM/(Eff x total sample volume in M )
=
CPM/(Eff x 2.22 E6 DPM / uCi x total
sample volume in ml)
=
CPM / (Eff x 60 DPM / Bq x total sample
volume in M )
=
uCi / ml ( uCi / ml per DAC {DAC Factor} )
=
1 DAC exposure for 1 hour
=
2.5 mrem
=
3
3
=
25 uSv
3
# of DPM on filter
# of DPM
3
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