PURPOSE
EX version of radiometer designed to measure the volumetric activity of natural radioactive aerosols (subsidiary decay products of radon-222) and determine the equivalent of the equilibrium volume activity (EROA) of radon and thoron in the air.
TECHNICAL CHARACTERISTICS
| Range: • equivalent of the equilibrium volume activity of radon-222 • equivalent of the equilibrium volume activity of radon-220 (thoron) • Volumetric activity of subsidiary decay products of radon-222 |
5 ‑ 105 Bq·m-3 0,5 – 103 Bq·m-3 5 – 105 Bq·m-3 |
| Sensitivity to alpha-radiation of isotope 239Pu (Е – 5,15 МэВ) |
No less than 0,25 |
| Basic error |
± 30 % |
| Pump performance |
No less than 20 l·min-1 |
| Measurement time – radon-222 (pump on): • Markov methodology • Thomas methodology |
15 min 35 min |
| Power supply: • AC power supply • built-in batteries |
187-242 V, 50 Gz 12 V |
| Battery life |
Not less than 40 measurements |
| Overall dimensions |
210х100х80 mm |
| Memory for 100 measurement results, PC connectible | |
