Radon progeny monitoring
Dose assessment
Underground workplaces
Mining, Water works
Nuclear fuel industry
DOSEMAN PRO is especially constructed for accurate measurements of radon progeny concentration, expressed as PAEC or in WL ( working levels ). Dose calculations based on measurements of radon progeny concentration take into account changing equilibrium factors F between radon and it´s airborn progeny. This is of extraordinary importance in such places as underground mines, water facilities, tunnels etc. Battery operated in a durable, robust case, packed with latest semiconductor technology. Small and reasonably priced, this versatile instrument is the most precious companion when precise measurement of radiation dose from radon and progeny is important.
Theory of operation and features
Based upon the proven semiconductor technology and state-of-art alpha-spectrometry, DOSEMAN PRO consist of a Si-semiconductor detector head with millipore filter for excellent spectroscopic resolution of sampled aerosols. Filter can be changed easly by swivelling the detector head and a LLRD analysis (Long Living Radioactive Dust) may performed after exposition using state of art spectroscopy systems. The shock resistant casing houses an internal pump and NiMH rechargeable batteries for more than 50 hours of stand-alone operation. With dimensions of a small mobile phone and a weight of about 350 g, it is easy to wear during operational work. IrDA infra-red technology provides a comfortable data tranfer to a PC. Administator desk Windows software is included. This user friendly software calculates the radiation dose and is used for setting measurement parameters as well as the transfer of saved spectra and time distribution data to a PC.
Software - transfered data overview
Sum spectrum
Time distribution of the ROI areas of Po-218, Po-214 and Po-216, Po-212 and the resulting PAEC
Potential alpha energy exposure and accumulated dose
Upload of personal user data and alert level
Technical data
Operation
Detection of alpha-particles emitted by short lived Rn-222 and Rn-220 progeny collected on a filter by a fixed air flow rate
Detector
Ion implanted, light shielded silicon detector; 150 mm² sensitive area
Filter
Milipore 0.8µm pore size; diameter active diameter 14mm
Pump rate
0.14 L/min
Online Control
LCD, 3 rows (each with 12 characters); single button soft key pad
Device control & data transfer
IR interface to PC COM port
Alert function
Buzzer
Dimensions/weight
138 x 57 x 32 mm; 300 g
Power supply
Internal NiMH battery; rechargeable; more than 50 h operational time
Housing
Aluminium, shock resistent
Ambient conditions
Temperature: -10°C - +50°C; humidity: 0% - 98% (not condensing)
