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
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