
Model 4525 Gate Monitor
Operator’s Manual
Ludlum Measurements, Inc.
Page 80
May 2018
Detector Specifications
Detector Size
: 3500 cubic inches (36,052 or 57,355 cm
3
) of EJ-200 plastic
scintillation material per detector, depending on which system the detector is
with.
Model 4525-7000: 2 detectors, each 3500 cubic inches (57,355 cm
3
) for a
total of 7000 cubic inches (114,709 cm
3
)
Model 4525-14000: 4 detectors, each 3500 cubic inches (57,355 cm
3
) for a
total of 14,000 cubic inches (229,419 cm
3
)
Other Model 4525 systems may have different numbers and sizes of
detectors.
Photomultiplier Tube
(PMT): each detector utilizes two PMTs (an
increase in efficiency of 30% over one PMT).
Enclosure Construction
: stainless steel with aluminum door.
Enclosure Dimensions
: 208 x 62.2 x 22.9 cm (82 x 24.5 x 9 in.) (H x W x
D)
Weight per detector
: 295 kg (650 lb)
Sensors
: Supplied with dual presence and speed sensors.
Optional System Accessories
Strobe/horn with 50 ft cable.
External video camera in weatherproof enclosure (each system can support
one camera per lane).
Detector stand set.