Owner's manual

Featuring:
radiation monitoring
systems
A Mirion Technologies Division
NGM 203S
Particulate, Gas & Iodine Monitors
NGM 203 S
High Range Noble Gas Monitor
The NGM 203S monitor forms part of the RAMSYS
product line.
It has been developed to sample air in discharge
stacks, ventilation ducts or working areas. A  ow
through ionization chamber is enclosed in a 4 π/5 cm
(4 π/2 in) lead shielding.
This monitor is designed to meet the noble gas
monitoring requirements set forth by the USA
Regulatory Guide 1.97 and it can be used before,
during and after an accident. It can operate in
conjunction with a shielded particulate and iodine
sampler (PIS 203) and with a low range noble gas
monitor (NGM 204) to form a wide range monitoring
system.
APPLICATIONS
• Post-accident operations
○ Containment atmosphere
○ Stacks, etc.
RELATED MONITORS
• PIS 203S: accident range particulate and iodine
sampler
FEATURES
● Designed for accident and post-accident conditions
● Durable detector without any electronic or radiation
degraded component
● 1E quali cation and embedded safety related software
● Available under 10 CFR 50 App. B, ASME NQA-1 and
IEC61226 programs for safety related application