Mirion Technologies NGM 204L - Manual

Featuring:
radiation monitoring
systems
A Mirion Technologies Division
NGM 204L
Particulate, Gas & Iodine Monitors
NGM 204L
Low Range Noble Gas Monitor
The NGM 204L monitor from the RAMSYS product
line has been developed to sample air in discharge
stacks, ventilation ducts or working areas. The dual
silicon diode detector integrated in a 4 π/5 cm (4 π/2
in) lead shielded sample volume guarantees high
reliability of the measurements. The fi rst silicon diode
detects the beta/gamma radiation from sample vo-
lume and the gamma ambient radiation. The second
one detects gamma radiation from sample volume
and the gamma ambient radiation. This allows noble
gas beta measurement with dynamic gamma com-
pensation by the processing algorithm.
APPLICATIONS
• Effl uent release monitoring
○ Stacks, etc.
• Radioprotection of workers
○ Containment atmosphere, etc.
RELATED MONITORS
• NGM 204S: seismically qualifi ed version
• PING 206S: version with particulate and iodine
• PNG 206S: version with particulate
FEATURES
● Dynamic gamma radiation compensation
● Calculation of the total released activity through a stack
fl ow rate signal provided
● Compact and reliable
● Minimum periodic maintenance