 Ludum
3500 Series Gate Monitor
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INDICATED USE: Low level gamma radiation
monitoring
SYSTEM OPERATION: The system will
continuously monitor background levels until the infrared sensor identifies
an object. It will then automatically switch to checking the object for
radiation caused by contamination until the object is clear of the sensor
at which time the system will return to monitoring background.
DETECTORS: These systems utilizes
multiple plastic detectors of various sizes (see table below)
AUDIO: Unimorph type speaker (greater
than 68 dB at 2 feet)
METER: 2.5" (6.4 cm) arc, 1 mA
analog type
METER DIAL: 0 - 25 kcps
CHECKING (green LED):Indicates
vehicle is passing through the system
SYSTEM OK (green LED): Indicates
the system is functioning properly
CHANNEL 1: Pushbutton to check
the count rate on channel 1
CHANNEL 2: Pushbutton to check
the count rate on channel 2
ALARM: Indicated by a red LED's,
red flashing lamp, and audible tone (Can be internally set from 1 -
8.5 deviations above background in half step increments )
AUDIO ACKNOWLEDGE: Push-button
to silence the audio after an alarm has been indicated
ALARM RESET: Push-button to reset
the alarm
FAIL 1 (yellow LED): Indicates
when a signal is not received from detector 1
FAIL 2 (yellow LED): Indicates
when a signal is not received from detector 2
RS-232: 9 pin connector to allow
connection of a computer or printer for data logging.
CONTROLS: 5 pin connector allowing
for connection of external alarm indicators
RELAYS: 3 pin connector allowing
for connection of external alarm indicators
POWER: 95 - 135 VAC (178 - 240
VAC available), 50 - 60 Hz single phase (less than 100 mA)
ELECTRONICS CONSTRUCTION:Steel
NEMA 12 enclosure
TEMPERATURE RANGE: -4 degrees F(-20
degrees C) to 122 degrees F(50 degrees C)
May be certified for operation from -40
degrees F(-40 degrees C) to 150 degrees F(65 degrees C)
SIZE: 15" (38.1 cm)H X 12" (30.5
cm)W X 6.5" (16.5 cm)D
WEIGHT: 18 lbs (8.2 kg)
| SYSTEM |
MODEL 3500-1000 |
MODEL 3500-3000 |
MODEL 3500-6000 |
| SYSTEM CONFIGURATION |
1 detector per side |
2 detectors per side |
| PART NUMBER |
48-3046 |
48-3041 |
48-3059 |
| DETECTOR TYPE |
Plastic Scintillation |
| NO. OF DETECTORS |
2 |
4 |
| DETECTOR SIZE |
480 cubic inches |
1500 cubic inches |
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Photo of 3500-1000 detector |
Photo of 3500-3000 detector |
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