AlphaGUARD is a portable equipment designed for instantaneous or continuous measurement of radon gas activity (Rn-222).
AlphaGUARD is used for the measurement of Radon in the environment, mines, laboratories and also for complementary investigations in buildings.
Air, water, soil, exhalation measurements are performed thanks to a large range of accessories and external probes.
DataEXPERT software performs data analysis and storage.
The type PQ2000 PRO is now upgradeable with a Thoron measurement mode. This addidional new mode enables the AlphaGUARD to discriminate radon from thoron.
|Detector||0.62 L ionization chamber|
|Mode of operation||3D alpha spectroscopy and current mode|
|Measuring range||2 – 30 000 Bq/m³ (P30)
2 – 2 000 000 Bq/m³ (P2000/PQ2000/PQ2000PRO)
|Instrument calibrator error||3%|
|Sensitivity of detector||1 cpm at 20 Bq/m³|
|Detector filling system||Design optimized for fast passive diffusion :10/60 min and
flow mode : 1/10 min (PQ2000 PRO only)
|Memorization||P30/P2000/PQ2000 : 1 to 4 months (resp. 10 min and 60 min cycles)
PQ2000 PRO : 3 days, 1 and 6 months (resp. 1, 10 and 60 min cycles)
|Autonomy||10 days (40 days with external battery)|
|Dimensions||120 x 315 x 175 mm3|