Mirion Technologies NGM 202L User Manual
Featuring:
radiation monitoring
systems
A Mirion Technologies Division
NGM 202L
Particulate, Gas & Iodine Monitors
NGM 202L
Noble Gas Monitor
The NGM 202L monitor forms part of the RAMSYS
product line. It has been developed to continuously
sample the volumetric activity of noble gas and
tritium in a radioactive ef uent gaseous sample. This
monitor can operate as a stand alone device or in
conjunction with a particulate monitor (ABPM 201),
iodine monitor (IM 201) and with a high range noble
gas monitor (NGM 203) to form a very wide range
monitoring system.
APPLICATIONS
• Ef uent release monitoring
○ Ventilation ducts
○ Stacks, etc.
• Radioprotection of workers
RELATED MONITORS
• NGM 203S: accident range noble gas monitor
• NGM 204L: low range noble gas monitor
• NGM 204S: low range noble gas monitor
FEATURES
● Dynamic gamma radiation compensation
● Compact and reliable
● Minimum periodic maintenance
● Tritium measurement capability
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
NGM 202L
Particulate, Gas & Iodine Monitors
PHYSICAL CHARACTERISTICS
● Radiation detected: alpha, beta, gamma and tritium
● Detector: dual large differential ionization chamber
● Sampling chamber: 10 l (10000 cc) each
● Energy range: 5 keV to 8 MeV
● Typical measurement range: 10
+4
to 3.7 10+9 Bq/m3
(2.7 10-7 to 10-1 µCi/cc)
ENVIRONMENTAL CHARACTERISTICS
● Long term temperature: +10°C to +40°C
(+50°F to +104°F)
● Periodic temperature:
-5°C to +55°C (+23°F to +131°F)
● MTBF: > 20 000 hours, with preventive maintenance
● TID (processing unit): 25 Gy (2.5 10
+3
rad)
PNEUMATIC CHARACTERISTICS
● Standard ow rate: 35 l/min (1.24 scfm)
● Pressure drop: according to the lter dust loading
MECHANICAL CHARACTERISTICS
● Dimensions: 1354 mm x 825 mm x 440 mm
(53.3 in x 32.5 in x 17.3 in)
● Weight: ~ 96 kg (~ 212 lb)
● Color: gray RAL 7030 (decontaminable paint)
● Inlet tube connection: Ø 12 mm OD (1/2 in)
● Outlet tube connection: Ø 25.4 mm OD (1 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
● EMC: 2006/95/CE and 2004/108/CE, IEC61000-6-2
and IEC61000-6-4
VERSIONS
● 230 Vac or 120 Vac
● LPDU or LPU
● Pumping unit
● With or without RS485 junction box
● Monitor wall or oor mounting plate
ACCESSORIES
● Calibration tools
● Software
● USB converters
● Dust lter holder
● PIS sampler
www.mirion.com
144766EN-E
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