Model 702e Isotope Identifier

Integrated Spectroscopy with External Detector

702e MCA with external detector 702e MCA 702e MCA display


The Model 702e Isotope Identifier with an external NaI detector provides end users like first responders a simple tool to quickly locate any abnormal levels of radioactivity and accurately identify the isotopes present. It additionally offers several advanced features for well-trained experts seeking to perform more detailed analysis either in the field or in a laboratory. Connection to a PC is available via a built-in Ethernet connection where stored or real-time collected data can be processed by optional isotopic analysis programs, such as the Quantum software (available upon request).
The 700-Series employs time-slicing and patented Quantum Compression Conversion (QCC) technology that delivers improved energy resolution, real-time background subtraction, and the highest degrees of sensitivity. These units have a trace amount of 40K embedded to provide gain stabilization and self-calibration. All captured spectra data are stored to a removable compact flash card in ANSI N42.42 standard format. This convenient storage medium facilitates quick removal for review elsewhere as well as allowing virtually an unlimited number of spectra to be collected while in the field.

These instruments were the very first ones designed to meet ANSI N42.34 Performance Criteria for Handheld Instruments for the Detection and Identification of Radionuclides. The design was also optimized for portability, user-friendliness, and rugged use out in the field.

An ergonomic shape and excellent balance allow them to be operated with a single (gloved) hand with easy thumb access to a set of very large tactile type control buttons. The 8.9 cm (3.5 in.) color LCD is a transflective type, which actually brightens with use in bright sunlight conditions that typically render other types of LCDs useless. The use of color on the different displays is intelligently applied signifying the appropriate activity levels for capturing spectra, labeling isotope categories, and presenting alarms. Audible feedback and voice alerts further enhance the user interface. The instrument is powered with eight internal rechargeable AA NiMH batteries, and comes with a 35W, 12V or 15V universal adapter (depending on system revision), and has a 9V fused accessory adapter.

Functions Nuclide identification, Spectrum analysis, Dose rate calculation (rem/hr or Sv/h), Total dose, Audible search tool
Detector External NaI(Tl) scintillator, 5.1 x 5.1 cm (2 x 2 in.) (D x L)
Sensitivity 1500 cps per mSv/h (900 cpm per µR/h) (137Cs)
Energy Range 18 keV to 3 MeV
Energy Resolution 7.5 to 8.5% (137Cs)
Integrated Electronics Digital signal-processing MCA
ADC Type: Base converter 14-bit pipelined-flash
Conversion Modes: Linear - 256, 512, 1024 channels; QCC - 256, 512 channels (U.S. Patent 5,608,222)
LLD/ULD: 0 to 100% of FS adjustable in < 0.01% steps
Zero: -5% to +5% of full scale, digitally adjustable
Pulse Processor Trapezoidal filter with adjustable time constant and pulse shape discrimination
Gain 0.5 to 16.0
Display 320 x 240 high brightness, 32,000-color, 8.9 cm (3.5 in.) transflective LCD display
I/O RJ-45 Ethernet port
Trigger Lists Multiple trigger lists can be selected for different applications, including standard ANSI isotopes, medical, industrial, or SNM
Setup Options Can be password-protected for use by non-technical personnel
Calibration Automatic calibration (temperature) stabilization with low-level 40K source. Coarse and fine energy calibration and dose-rate calibration done at factory, but available for expert users.
Clock Battery-backed, real-time clock/calendar

Alarm Visual (on screen) and audio (internal speaker or optional headphones)
Temperature Range -20 to 50 °C (-4 to 122 °F)
Water/Dust Resistance IP56
Power Batteries: Internal, 8 x 2450 mAh NiMH AA batteries
AC: 35W, 12V or 15V universal AC adapter (depending on system revision)
Auto: 9V fused accessory adapter
Size (H x W x L) 16.5 x 11.4 x 22.8 cm (6.5 x 4.5 x 9 in.)
21.6 cm (8.5 in.) height with handle
Weight 2.8 kg (6.1 lb) with batteries