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Ludlum Model
702
Radiation Isotope Identifier
- 2" x 2" NaI

Features
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Quick Identification with High Accuracy
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2" x 2" NaI Radiation Detector
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Self Calibrating
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Sunlight Readable Color LCD
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Separate User and Advanced Operational Modes
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Single Handed Operation
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ANSI N42-34 Compliant
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Removable Compact Flash Card Spectra Storage
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Detachable Detector
Introduction
The
portable Ludlum Model 702 radiation isotopic measurement system was
developed to give end users like first responders a simple tool to
quickly locate any abnormal levels of radioactivity and accurately
identify the isotopes present.
The instrument is coupled to a 2" x 2" NaI radiation detector whose signal is gain stabilized and automatically
calibrates itself via an embedded 40K source. The Model 702
additionally offers several advanced features for well trained experts
seeking to perform more detailed analysis either in the field or in a
laboratory.
Spectrums can be captured to a removable Compact Flash disk
or sent to a PC via an Ethernet connection. Quantum PC software to
analyze the spectra more thoroughly is included along with a NiMH
battery charger.
Neutron
Detection Capability
Ludlum also offers the Model 702-1 which adds a 3He
neutron detector. The detector is 1 in. in diameter by x 6.2 in.
long (2.5 cm by 15.7 cm), is filled to 2 atmospheres, and has a
sensitivity of 13 cps/nv. It is fed into a separate channel of the
702 and displays cps; there is no identification involved. The part
number for the Model 702-1 is: 48-3666.
Specifications
PART NUMBER: 48-3643
FUNCTIONS:
Nuclide identification, spectrum analysis, dose rate calculation (rem/hr
or Sv/hr), total dose, audible search tool.
INTEGRATED
ELECTRONICS: Digital
signal-processing MCA
ADC TYPE:
Base converter 14-bit pipelined-flash
CONV. MODES:
Linear 256, 512, 1024 QCC 256, 512 (U.S. Patent 5,608,222)
LLD/ULD:
0 to 100% of FS adjustable in < .01% steps Zero: ±100% of
FS adjustable by channels
PULSE PROCESSOR:
Trapezoidal filter with adjustable time constant and pulse shape
discrimination.
RADIATION DETECTOR:
2" x 2" Nal
DETECTOR SENSITIVITY:
900 cpm/uR/hr
DETACHABLE DETECTOR:
Detectors have an integral HV bias supply.
ENERGY RANGE:
18 keV – 3 MeV
DISPLAY:
320 x 240 high brightness 32000-color 3.5” transflective LCD display
I/O:
10/100 Ethernet port and optional RS-232
adapter cable.
POWER:
8 standard NiMH AA batteries and spare battery holder
included; alkaline AAs can also be used. Universal AC power adapter
included.
WATER/DUST RESISTANCE:
IP56
TEMPERATURE RANGE:
-4° F to 122° F (-20° C to 50° C)
TRIGGER LISTS:
Multiple trigger lists can be selected for
different applications, including standard ANSI isotopes, medical,
industrial, SNM, or user-defined lists.
LIBRARY
CUSTOMIZATION:
Modifications of isotopes and their associated energy lines can be
done either in the field or using Microsoft Excel®. Essentially no
limit to number of isotopes or lines.
EASE OF USE:
Setup options can be password-protected for use by
non-technical personnel.
CALIBRATION:
Automatic calibration (temperature) stabilization with
integral low-level 40K source. Advanced calibration
routines are available.
CLOCK:
Battery-backed real-time clock/calendar.
CONTROLS:
7-key custom keypad with one-thumb operation.
ALARM:
Visual (on screen) and Audio (internal speaker
or optional headphones)
WEIGHT:
5.4 lbs. (2.45 kg) with Model 702 and
batteries
DIMENSIONS:
12” L x 4” H x 5” W (30.5 x 10.2 x 12.7 cm) (excluding
detector)
This Product is CE Certified
Options
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Detector Cable (Model L-2311637) - 5 ft.
spare detector cable
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Car Adapter Cable (Model L-4525-383) - car
adapter cable +12V
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Headphone (Model L-4525-382)
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Battery Charger (Model L-2311438)
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Battery (Model L-2311439) - Battery, AA,
NiMH
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Battery Holder (Model L-2311509) - Battery
Holder for 8 size AA batteries, used on Model 700 Series
Isotopic Identifiers. Facilitates extended operation in the
event the standard rechargeable battery pack power is
exhausted. Can be easily installed in the field.
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Storm Case (Model L-2311064) - Airtight
and watertight (Waterproof design with tongue and groove locking
lid). Black injection-molded case utilizing HPXTM
resin. Large, 22" L x 17" W x 8" D (55.9 x 43.2 x 20.3 cm)
Spare Parts List
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Upper Housing (Ludlum Brown) 2311641
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Lower Housing (Ludlum Brown) 2311642
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Battery Cover (Ludlum Brown) 2311643
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Port Cover 2311644
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Main Board Tested 2311645
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Power Supply Board Tested 2311646
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E-Pac Board Holders (Set) 2311647
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Power Supply 2311648
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Battery Pack 2311649
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Internal Battery Cable 2311650
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Internal Detector Cable 2311651
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Internal I/O Data Cable 2311652
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Speaker Assembly 2311653
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Keypad 2311654
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Display Extender Board 2311655
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Display Extender Cable 2311656
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LCD Display 2311657
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External Detector Cable ( 9 inch) 2311658
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External Detector Cable ( 5 foot) 2311443
Software
Technical Information
Alternate Instruments
Other Ludlum Products
Ludlum Information
For more information or to request a quotation,
please contact us
by phone at: (865)
947-5123 or by email at:
sales@deqtech.com.
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