"UDAS-01A" — a system for measuring the volumetric activity of radioactive aerosols
Measurement range for volumetric activity (VA) of alpha-emitting nuclides, Bq/m³ — 1·10⁻² to 3.6·10⁶
Measurement range for volumetric activity (VA) of beta-emitting nuclides, Bq/m³ — 1·10⁻² to 1·10⁷
Energy range of detectable alpha radiation, MeV — 2.5 to 10
Energy range of detectable beta radiation, MeV — 0.05 to 4
Limits of intrinsic relative error for VA measurements of alpha-emitting nuclides: 1.0·10⁻² to 1.0 Bq/m³ — ±50%; 1.0 to 3.6·10⁶ Bq/m³ — ±20%
Limits of intrinsic relative error for VA measurements of beta-emitting nuclides: 1.0·10⁻² to 10 Bq/m³ — ±50%; 10 to 1·10⁷ Bq/m³ — ±20%
Volumetric flow rate of air drawn through the filter, L/min — 2.5 to 65
Instability of instrument readings over 24 hours of continuous operation, % — 5
Continuous operation time, hours, minimum — 24
Warm-up time to reach operating mode under constant external conditions, minutes, maximum — 10
Power supply: voltage, V — 220 (-33/+22); frequency, Hz — 50 (-3/+3)
Power consumption (excluding power for...) Power consumption (by the pump unit), V·A, not more than — 50
Overall dimensions, mm, not more than — 260x300x385
Weight, kg, not more than — 15
