RS2047 T. Streil Thoronscout2014Niska Banja
User Manual: RS2047
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1 THORON-SCOUT The first diffusion based Radon and Thoron active monitor for long term measurements in buildings T. Streil*, V. Oeser and M. Duzynski SARAD GmbH Wiesbadener Str. 10 D-01159 Dresden info@sarad.de *streil@sarad.de Nis 27- 30 Mai 2014 2 SARAD - Introduction • Company with established reputation and many years of experience, located in Dresden, Germany. • The core competence of the company is the design and the production of devices and systems for environmental radioactivity measurements and radioactivity analysis. • SARAD offers a unique spectrum of Radon, Radon progeny and aerosol monitors for nearly any application. 3 Equipment for R&D and production Assembly line Bonding Rapid prototyping R&D debugging 4 Closer to your application! Radon Scout Plus DOSEman PRO RTM1688-2 Spectra 5011/5031T RTM2200 IndoorAir Sensor EQF3220 MyRIAM 5 Further Products… RTM-2100 GEO-Station Detectors… RTM-2100 GEO-Station A2M 4000 -Areamonitor Nuc Scout with wire less 2,4 GHz ZigBee Datatransfer 8 … and the new device: SIMPLE FAST SAFE BioBio-Scout 9 10 11 Fast diffusion of measurement gas in Thoron-Scout the pros: • No pump necessary!! o smaller power consumption longer measurement time o no vibrations o no noise o longer device reliability (no movable mechanical parts) … and cons: • Measurements only at the device exact localization o no water or soil analysis possible 12 Parameters/ Device Detectors Thoron sensitivity Rn-222 Measurement Spectral Analysis Data records Pump Operating Time Display Size Weight Thoron-Scout 1 0,670 cpm/(kBq/m3) YES YES 2047 NO 1 Month 4 line x 20 characters 135 x175 x90 1,1 kg RTM 1688 4 2,120 cpm/(kBq/m3) YES YES 2047 0,3 l/min 5 Days 3 line x 16 characters 232 x182 x135 3,5 kg Other futures of Thoron-Scout: • • • • • • • Power supply by AC/DC wall adapter possible Measurement cycle time adjustable: from 1 minute up to 240 minutes One button control (lock-function) RS232 and USB interface for set-up and data transfer (also via modem or ZigBee) Additional sensors: temperature, relative humidity, barometric pressure, movement detector Fast/ slow mode for Radon Measurements Radon Vision Software for data measurements results presentation 13 14 15 16 Radon measurement, 21.5 hours exposure time, 30min measurement cycle TSC RTM1688 17 Thoron measurement, 21.5 hours exposure time, 30min measurement cycle TSC RTM1688 18 TSC Po218TSC(cts) / Po218RTM1688(cts) = 8664 / 26625 = 0,325 Po216TSC(cts) / Po216RTM1688(cts) = 3971 / 12784 = 0,311 Po214TSC(cts) / Po214RTM1688(cts) = 7851 / 25385 = 0,309 RTM1688 Po212TSC(cts) / Po212RTM1688(cts) = 1440 / 4432 = 0,325 Po21XTSC(cts) / Po21XRTM1688(cts) ≈ constant !! Conclusion: The losses by diffusion process are negligible, otherwise the ratio of Po218 would be different from the Po-216 ratio. 19 20 Radon measurement, 7 hours exposure time, 15min measurement cycle TSC RTM1688 21 Thoron measurement, 1 hour exposure interval time, 15min measurement cycle TSC RTM1688 22 TSC Po218TSC(cts) / Po218RTM1688(cts) = 1742 / 5534 = 0,315 Po216TSC(cts) / Po216RTM1688(cts) = 748 / 2549 = 0,293 Po214TSC(cts) / Po214RTM1688(cts) = 1602 / 5555 = 0,288 RTM1688 Po212TSC(cts) / Po212RTM1688(cts) = 238 / 683 = 0,348 Po21XTSC(cts) / Po21XRTM1688(cts) ≈ constant !! Conclusion: During interval tests Thoron gas source is attached / detached from the system circulation. There is no significant change in measurement response between system with active gas flow and system with diffusion principle of work. Both Radon and Thoron measurement results for TSC and reference device RTM1688 are equal. 23 Cellar Wiesbadener Str. 10 01159 Dresden 24 Room 203 DND Hotel Niska Banja Soil gas flux extension with RTM2200 1m 0,5 m surface 1m 0,5 m surface Gas sensors for Intergation in the A2M4000 Gas CH4 CO H2 NH3 H2S H2S PH3 HCN HCl/HBr CL2 NO2 NO SO2 Measuring principle ZnO ZnO ZnO ZnO ZnO EC EC EC EC EC EC EC EC Measurin range[ppm] 500…10000 30…1000 50…5000 10…100 5…100 0…50 bis 0…2000 0…10 u. 0…2000 0…50 bis 0…100 0…20 bis 0…100 0…20 0…20 0…100 bis 0…5000 0…20 bis 0…2000 CH4 NDIR 0…1000,10000, 10 %, 100% CO2 NDIR 0…1000,10000, 10 %, 100% Deposition and particle size 86 Rn 1.0 total nasal deposition probability 0.8 (222) Radon 14 10 2 [Xe]4f 5d 6s p alveolar 0.6 bronchiolar 0.4 extrathoracal 0.2 0.0 bronchial 1 10 100 1000 particle diameter (nm) 10000 After: Porstendörfer & Zock ( 1996) 6 ASDA 02 Cascade impactor 3,25 nm Activity size distribution 1939 nm Unattached / attached fraction Nuclide specific activity and size 1095 nm 626 nm Activity size distribution 218Po 343 nm 0,45 nucleation mode: AMDn = 25 nm σn = 2,5 fn = 16 % 0,4 72 nm Back up 1 / C * (δ C / δ (ln d)) 0,35 158 nm accumulation mode: AMDa = 320 nm σa = 2,5 fa = 83 % 0,3 0,25 0,2 0,15 0,1 0,05 0 1 d [nm] 10 100 1000 10000 100000 EQF3220 – Radon, Thoron and daughters Continuous sampling through screen and filter Three particle size fractions - unattached - Cluster - attached Removeable sampling head for free positioning inside a room Radon Intercomparision under natural conditions Rodrigo ( Spain) May 2011 Screen spectra (unattached daughters) Cluster (during burning processes) „Normal“ particle size distribution Thoron PAEC Time resolution Unattached Thoron mesurement by EQF 3220 “Hazard-Detection and Management” 8th Dresden Conference Organized by IGRS Dresden Germany Septemner 2015
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