Model 4525 Gate Monitor
Operator’s Manual
Ludlum Measurements, Inc.
Page 1
May 2018
Introduction
The Model 4525 Radiation Portal Monitor (RPM) is a sophisticated system
with very sensitive gamma and optional neutron detectors for detecting small
amounts of radiation. The sophistication of the RPM provides the user with the
best chance of avoiding radiation. The RPM performs these functions with
minimal disruption to the normal processes of handling materials inbound and
outbound. Model 4525 systems are normally operated in a pass-through (or
drive-through) configuration with a scan occurring while the vehicle is passing
through the portal.
Several configurations are available. The most common RPMs are shown in the
photos below.
Model 4525-7000
Model4525-14000
Section
1