Description
The NRM-477 is a lightweight, portable, hand held neutron rate meter. The enclosure and controller electronics are shared with the PRM-470B. Neutron detection is provided by an He3 detector with high density polyethylene moderator. Count time is variable from 1-60 seconds and the alarm level may be set from no alarm to 99 counts. A display backlight is supplied to permit use in low light conditions.
Applications
Uses for TSA’s model NRM-477 include special nuclear materials (SNM) searches at plant exits and material access areas, as well as contamination and background monitoring. The small size and light weight make it ideal for extended search time applications.
Specifications
DETECTORS:One, 7.1"h x .75"d (18 x 2cm), He3 tube, 4" diameter (10.2cm) active, 4 ATM. |
ALARM LEVELS:Set by two internal rotary switches, range 1 to 99 Cps |
ALARM INDICATION:Audible and visual via a front panel LED |
POWER REQUIREMENTS:A six volt nickel cadmium battery pack of five 1.3 amp-hour sub C batteries. Minimum of 10 hours on a full charge. Excessive use of backlight will shorten battery life. Unit is supplied with a universal charger that will recharge the batteries in 16 hours. |
DIMENSIONS:7.5"h x 5"w x 2.25"d (19 x 13 x 6cm) |
WEIGHT:3.28 lb (1.5kg) |