Isotopic Identifier - Model 702i


702i MCA

The portable Model 702i isotopic measurement system was developed to give end users such as first responders a simple tool to quickly locate any abnormal levels of radioactivity, and to accurately identify the isotopes present.

The instrument houses an internal 5.1 x 3.8 cm (2 x 1.5 in.) NaI detector. Its signal is gain stabilized and it automatically calibrates itself via an embedded 40K source. The Model 702i additionally offers several advanced features for well-trained experts seeking to perform more detailed analysis either in the field or in a laboratory.

Spectra can be captured to a removable CompactFlash 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.


FUNCTIONS: nuclide identification, spectrum analysis, dose rate calculation (rem/hr or Sv/h), 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: 0–100% of FS adjustable in < .01% steps
PULSE PROCESSOR: trapezoidal filter with adjustable time constant and pulse shape discrimination
GAIN: 0.5–16.0
DETECTOR: internally mounted 5.1 x 3.8 cm (2 x 1.5 in.) (Dia x L) Nal
DETECTOR SENSITIVITY: 775 cpm/μR/hr (137Cs)
ENERGY RESOLUTION: 7.5 to 8.5% (137Cs)
ENERGY RANGE: 18 keV to 3 MeV
CONNECTION: Switchcraft 6-pin weathertight connector
DISPLAY: 320 x 240 pixel, high brightness, 32000-color, 8.9 cm (3.5 in.) transflective LCD display
I/O: 10/100 Ethernet port
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
TEMPERATURE RANGE: -20 to 50 °C (-4 to 122 °F)
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, coarse calibration with 137Cs, advanced calibration routines are available
CLOCK: battery-backed real-time clock/calendar
Handle Keypad: three button for screen controls (left, right and enter)
Instrument Body Keypad: four buttons includes
Instrument on/off and also acknowledgement
Up key
Down key
Menu key
ALARM: visual (on screen) and audio internal speaker
CONSTRUCTION: durable plastic with metal support
DIMENSIONS: 25.1 x 11.4 x 22.1 cm (9.9 x 4.5 x 8.7 in.) (H x W x D) with handle
WEIGHT: 2.4 kg (5.2 lb)