RIS-4A Dose Calibrator / Radionuclide Activity Radiometer
Energy range of detected gamma radiation, keV: 20 – 3000
Range of maximum (endpoint) energies of detected beta radiation, keV: 1000 – 1500
Measurement range for the activity of gamma-emitting nuclides, Bq: 1.0 × 10⁵ – 2.0 × 10⁹
Measurement range for the activity of beta-emitting nuclides, Bq: 1.0 × 10⁷ – 5.0 × 10⁹
Limits of permissible relative error for activity measurements of gamma-emitting nuclides, % (by sub-range):
- 1.0 × 10⁵ – 9.99 × 10⁵ Bq: ±15
- 1.0 × 10⁶ – 2.7 × 10¹⁰ Bq: ±3
Limits of permissible relative error for activity measurements of beta-emitting nuclides, %: ±5
Transfer function of the detection unit: linear
Instability over 24 hours of continuous operation, %: ±3
Warm-up time (to reach operating mode), max., min: 30
Mass of the detection unit, max., kg: 11
Overall dimensions of the detection unit (diameter × height), mm: 180 × 340
