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Featuring:
radiation monitoring
systems
A Mirion Technologies Division
IM 201L
Particulate, Gas & Iodine Monitors
I M 201L
Iodine Monitor
The IM 201L monitor forms part of the RAMSYS
product line.
It has been developed to continuously measure
the gamma volumetric activity of radioactive iodine
sample, in both molecular and organic forms (methyl
iodine), contained in air drawn from stacks, ventilation
ducts or working areas. An NaI scintillation
detector faces the activated charcoal cartridge in
which Radioactive Iodine is trapped. The proximity of
the detector and the cartridge, enclose within a
4 π/5 cm (4 π/2 in) lead shielding, serves to optimize
detection ef ciency. A
241
Am radioactive source built
into the NaI christal allows compensation of tempera-
ture and aging related drifts. The spectrometry
capability, based on a 1024 channel spectrum
analysis, allows radio iodine isotope localization.
APPLICATIONS
• Ef uent release monitoring
○ Stacks, etc.
• Radioprotection of workers
○ Containment atmosphere
○ Control room air, etc.
RELATED MONITORS
• IM 201M: mobile version
• IM 201S: seismically quali ed version
• PING 206S: version with particulate and noble gas
• PIM 206S: version with particulate
FEATURES
● Embedded
241
Am source for energy spectrum
stabilization against temperature changes and aging
● 1024 channels spectrum analysis
● Ef uent trapping of both molecular and organic forms
of iodine
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Since norms, speci cations and designs are subject to occasional change, please ask for con rmation of the information given in this publication.
Mirion Technologies (MGPI) SA
Route d’Eyguières
FR-13113 Lamanon
France
T +33 (0) 4 90 59 59 59
F +33 (0) 4 90 59 55 18
Mirion Technologies (MGPI) Inc
5000 Highlands Parkway
Suite 150
Smyrna, GA 30082
USA
T +1 770 432 2744
F +1 770 432 9179
Mirion Technologies (MGPI H&B) GmbH
Landsberger Strasse 328a
DE-80687 Munich
Germany
T +49 (0) 89515 13-0
F +49 (0) 89515 13 169
Mirion Commercial (Beijing) Co., Ltd.
Shanghai Jiangchang Commercial Branch
Room 801, 78 Jiangchang SanLu
Zhabei District, Shanghai 200436
PR of China
T +86 21 6180 6920
F +86 21 6180 6924
IM 201L
Particulate, Gas & Iodine Monitors
PHYSICAL CHARACTERISTICS
● Radiation detected: gamma
● Detector: 1¼”x1” NaI(TI) scintillator + PMT
● Iodine cartridge: 57.7 mm (2.27 in)
● Energy range: 100 keV to 3 MeV
● Typical energy windows: 314 - 414 keV
(
131
I, Eγ 364.5 keV)
● 1024 channels spectrum
● Typical measurement range: 3.7 to 3.7 10
+6
Bq/m3
(10
-10
to 10-4 µCi/cc)
ENVIRONMENTAL CHARACTERISTICS
● Long term temperature: +10°C to +40°C
(+50°F to +104°F)
● Maximum periodic ambient temperature:
-5°C to +55°C (+23°F to +131°F)
● MTBF: > 20 000 hours, with preventive maintenance
● TID: 100 Gy (10
+4
rad)
PNEUMATIC CHARACTERISTICS
● Standard ow rate: 35 l/min (1.24 scfm)
● Pressure drop: according to the lter dust loading
MECHANICAL CHARACTERISTICS
● Dimensions: 864 mm x 725 mm x 440 mm
(34 in x 28.5 in x 17.3 in)
● Weight: ~ 220 kg (~ 495 lb)
● Color: gray RAL 7030 (decontaminable paint)
● Inlet tube connection: Ø 12 mm OD (1/2 in)
● Outlet tube connection: Ø 12 mm OD (1/2 in)
ELECTRICAL CHARACTERISTICS
● Power supply: 230 Vac – 50 Hz or 120 Vac – 60 Hz
● Data link outputs: 1 RS232 and 2 isolated RS485
● Alarm relays: 3 SPDT relays
● I/O: 2 isolated analog outputs and 1 isolated analog
input (0/4-20 mA)
SIGNALING (Applicable to LPDU only)
● Alphanumeric display: measurement, status…
● Sound alarm: buzzer 90 dBA at 1 meter
● Visual alarm: 3 lights (red, yellow, green)
REFERENCE STANDARDS
● Nuclear: IEC60761, IEC61171
● EMC: 2006/95/CE and 2004/108/CE, IEC61000-6-2
and IEC61000-6-4
VERSIONS
● 230 Vac or 120 Vac
● LPDU or LPU
● With or without dust lter holder
● Pumping unit
● Monitor wall or oor xing plate
ACCESSORIES
● Calibration tools
● Software
● USB converters
www.mirion.com
144104EN-D
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