RS2047 T. Streil Thoronscout2014Niska Banja

User Manual: RS2047

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T. Streil*, V. Oeser and
M. Duzynski
THORON-SCOUT The first diffusion based
Radon and Thoron active monitor for long term
measurements in buildings
1
M. Duzynski
SARAD GmbH
Wiesbadener Str. 10
D-01159 Dresden
info@sarad.de
*streil@sarad.de
Nis
27- 30 Mai 2014
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
2
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.
Equipment for R&D and
production
3
Assembly line Rapid prototyping
Bonding R&D debugging
Closer to your application!
Radon Scout Plus
RTM1688
-
2
RTM2200
EQF3220
4
Radon Scout Plus
RTM1688
-
2
RTM2200
EQF3220
DOSEman PRO Spectra 5011/5031T IndoorAir Sensor MyRIAM
Further Products…
5
RTM-2100 GEO-Station RTM-2100 GEO-Station
Detectors…
A2M 4000 -Areamonitor
Nuc Scout
with
wire less 2,4 GHz
ZigBee
Datatransfer
Datatransfer
… and the new device:
SIMPLE
FAST
8
SAFE
Bio
BioBio
Bio-
--
-Scout
ScoutScout
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
no noise
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 Thoron-Scout RTM 1688
Detectors 1 4
Thoron sensitivity 0,670 cpm/(kBq/m
3
) 2,120 cpm/(kBq/m
3
)
Rn-222 Measurement YES YES
Spectral Analysis YES YES
Data records 2047 2047
Pump NO 0,3 l/min
Operating Time 1 Month 5 Days
Display 4 line x 20 characters
3 line x 16 characters
Size 135 x175 x90 232 x182 x135
Weight 1,1 kg 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
RTM1688
Po218TSC(cts) / Po218RTM1688(cts) = 8664 / 26625 = 0,325
Po216TSC(cts) / Po216RTM1688(cts) = 3971 / 12784 = 0,311
Po214TSC(cts) / Po214RTM1688(cts) = 7851 / 25385 = 0,309
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.
RTM1688
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
TSC
RTM1688
22
Po218TSC(cts) / Po218RTM1688(cts) = 1742 / 5534 = 0,315
Po216TSC(cts) / Po216RTM1688(cts) = 748 / 2549 = 0,293
Po214TSC(cts) / Po214RTM1688(cts) = 1602 / 5555 = 0,288
TSC
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
1 m 0,5 m surface
1 m 0,5 m surface
Gas Measuring principle Measurin range[ppm]
CH4 ZnO 500…10000
CO ZnO 30…1000
H2 ZnO 50…5000
NH3 ZnO 10…100
H2S ZnO 5…100
H2S EC 0…50 bis 0…2000
PH3
EC
0…10 u. 0…2000
Gas sensors for Intergation in the A2M4000
PH3
EC
0…10 u. 0…2000
HCN EC 0…50 bis 0…100
HCl/HBr EC 0…20 bis 0…100
CL2 EC 0…20
NO2 EC 0…20
NO EC 0…100 bis 0…5000
SO2 EC 0…20 bis 0…2000
CH4 NDIR 0…1000,10000, 10 %, 100%
CO2 NDIR 0…1000,10000, 10 %, 100%
Deposition and
particle size
0.6
0.8
1.0
nasal
bronchiolar
alveolar
total
deposition probability
Rn
[Xe]4f 5d 6s p
14 10 2 6
Radon
(222)
86
1 10 100 1000 10000
0.0
0.2
0.4
extrathoracal
bronchiolar
bronchial
deposition probability
particle diameter (nm)
After: Porstendörfer & Zock ( 1996)
0
,
4
5
Activity size distribution Po
218
3,25 nm
343 nm
1939 nm
626 nm
1095 nm
Activity size distribution
Unattached / attached fraction
Nuclide specific activity and size
ASDA 02 Cascade impactor
0
0,05
0,1
0,15
0,2
0,25
0,3
0,35
0,4
0
,
4
5
1
1
0
1
0
0
1
0
0
0
1
0
0
0
0
1
0
0
0
0
0
d [n
m
]
1
/
C
*
(
δ
C
/
δ
(
l
n
d
)
)
n
u
c
l
e
a
t
i
o
n
m
o
d
e
:
A
M
D
n
=
2
5
n
m
σ
n
=
2
,
5
f
n
=
1
6
%
a
c
c
u
m
u
l
a
t
i
o
n
m
o
d
e
:
A
M
D
a
=
3
2
0
n
m
σ
a
=
2
,
5
f
a
=
8
3
%
72 nm
158 nm
343 nm
Back up
EQF3220 – Radon, Thoron and daughters
Continuous
sampling
through screen
Removeable
sampling head for
free positioning
inside a room
and filter
Three particle size
fractions
- unattached
- Cluster
- attached
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 GermanyDresden GermanyDresden Germany
SeptemnerSeptemnerSeptemner 201520152015

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