identiFINDER™ Series

The identiFINDER instrument series is a family of hand-held, digital gamma spectrometers. Every identiFINDER is able to rapidly locate, accurately measure and precisely identify sources or contaminations from gamma radiation. The ability to detect X-ray sources as well as the presence of neutrons in the radiation field via an optional neutron detector allows a wide application scope.

This standard identiFINDER includes a 1.4” diameter x 2” long NaI (Tl) detector plus a GM tube, for high gamma dose rate measurements. With the exception of the identiFINDER- X, every unit is supplied with a carrying holster, wrist strap, serial cable, battery pack for rechargeable and non- rechargeable batteries, charging unit, download and analysis software and a carrying case with shoulder strap.

Individual identiFINDER models are available with different types and sizes of detectors and special software. An optional, sealed 3He neutron detector with internal and external neutron moderator can be added for neutron detection.

Variations in normal operating conditions can affect the performance of radio-isotope identification devices (RIID) with scintillation detectors such as NaI(Tl) and LaBr3. Dramatic temperature variations can affect the scintillation detector and cause instabilities and non-linearities in the electronics. High count rate changes will also impact the peak position in a spectrum. The identiFINDER family of instruments has been developed to correct all these circumstances through different solutions for automatic calibration and continuous stabilization.

Easy to Operate

Two operation modes:

EASY (automatic mode): dose rate, finder and isotope identification parameters are password protected in EASY mode.
EXPERT MODE: full functionality of all capabilities including access for changing parameters/settings.

Three button operation plus ON/OFF
All components clearly marked:

identiFINDER™ ULTRA

New Generation, Multi-purpose Hand-Held Radioisotope

Identification Device with LED stabilization

The identiFINDERULTRA incorporates an unique method of stabilization that does not require a radioactive source of any type:

Stabilization of the photo multiplier gain is accomplished by means of a pulsed LED
Measurement of the effective NaI(Tl) crystal temperature is determined by pulse shape analysis
Gain shifts due to the measured temperature changes of the crystal are corrected

The identiFINDERULTRA is available with or without an optional 3He neutron detector. A watertight identiFINDERULTRA is also available.

identiFINDER™ -NG

Standard, Multi-purpose Hand-Held Radioisotope Identification Device

The identiFINDER-NG is a complete, portable, digital gamma spectrometer and dose rate measurement instrument. It integrates a digital multi-channel analyzer, amplifier, high voltage power supply and memory into a lightweight, easy to use device. In the standard identiFINDER Series an integrated 137Cs source of about 500 Bq (15 nCi) is used for calibration and stabilization. The identiFINDER is available with or without an optional 3He neutron detector.

identiFINDER™ -U

Ruggedized, Underwater Hand-Held Radioisotope Identification Device

The identiFINDER-U provides all of the features of the standard RIID identiFINDER in an underwater version. The identiFINDER-U is suitable for harsh, high humidity environments often encountered by fire fighters, civil defense workers, nuclear power plants and more. The identiFINDER-U is watertight to depths down to 10 m (33 feet). The identiFINDER is available with or without an optional 3He neutron detector.

identiFINDER™ -X

Telescopic Hand-Held Radioisotope Identification Device

The identiFINDER-X is a telescopic version of the identiFINDER. The telescopic handle extends the identiFINDER-X detector 2.2 m (7.2 feet) away from the operator. The identiFINDER is available with or without an optional 3He neutron detector.

SPECIFICATIONS

Features

Functions:           Dose rate display, radiation guard
                     and alarm annunciator, source
                     finder, gamma ray spectrometer,
                     spectrum analyzer, nuclide identifier,
                     spectrum memory, dose rate logger,
                     neutron indicator (optional)
Main detectors:      Ø 1.4” x 2” NaI(Tl) scintillator or
                     Ø 1.2” x 1.2” LaBr3(Ce3+) scintillator
Integrated ancillary
detectors:           Geiger-Mueller tube (GM tube) for
                     high dose rate measurements. Mode-
                     rated 3He tube for neutron detection
Remote Control:      RS232 interface, USB adapter;
                     setup and control including online
                     measurements
Language:            English, French, German, Russian,
                     Spanish
Integrated electronics: Digital Multi-Channel Analyzer for
                        main detector: Flash ADC, Digital
                        Signal Processor (DSP), Enhanced Fil-
                        ter Coprocessor (EFCOP); LED pulser;
                        HV power supplies for main and
                        ancillary detectors; Shaping Ampli-
                        fiers and Discriminators for ancillary
                        detectors (GM tube, 3He tube); serial
                        interface (RS232, USB)
Stabilization:          Integrated 137CS source and/or sour-
                        celess ULTRA detector stabilization
                        (pat. pend.)
Stability:              ±1.0% to ±1.5% (typical)
                        (-15°C to +55°C, 30 to 100,000 cps)
Calibration:            Automatic energy calibration and
                        stabilization

Spectrometry System - Dose / Dose Rate Measurement

Detector types:           NaI(Tl) or LaBr3(Ce3+)
Shaping:                  Digital filter
Resolution:               7.0% to 7.5% at 662 keV (NaI)
                          2.7% to 3.5% at 662 keV (LaBr3)
Throughput rate:          > 100,000 cps
Energy range:             15 keV to 3 MeV
INL, top 99%:             < 0.05%
DNL, top 99%:             < 0.1%
Spectrum characteristics: 1024 channels; linearized, calibra-
                          ted, and stabilized energy scale
Spectrum memory:         100 spectra at 1024 channels
Real time presets:       1 s – 1,000,000 s or none
Live time presets:       1 s – 1,000,000 s or none
Dose rate range (total): 0.01 µSv/h to 1 Sv/h
                         or 1 µrem/h to 100 rem/h
Dose rate range NaI:     0.01 µSv/h to 500 µSv/h
Dose rate range GM Tube: 500 µSv/h to 1,000 mSv/h
Dose range:              0.1 µSv to 1 Sv
                         or 10 µrem to 100 rem
Alarm levels:            5 adjustable preset levels

Dimensions - Controls, Display, Interfaces, Batteries and Accessories

Weight:            1250 g including batteries and
                   scintillation detector
Temperature range: –15 °C to +55 °C
Dimensions:        235 mm x 93 mm x 75 mm
                   255 mm x 93 mm x 81 mm
                   (U-version)
Operating time:    10 hours with 2500 mAh NiMH in
                   dose rate mode
Accessories:       AC adapter for stationary use and
                   recharging powerPACK plus;
                   RS232 and USB cables and
                   connector box; holster, carrying
                   case, optional: earphones
Keyboard:                 4 soft buttons
Alarm indicators:         Light (red and blue LEDs), sound, and
                          vibration
External power indicator: LED (green) on the rear side
Charger indicator:        LED (orange) on the rear side
Display type:             Monochrome LCD with backlight,
                          61 mm x 43 mm
Interface:                RS232 and USB
Battery pack:             powerPACK plus (rechargeable)
Standard batteries:       powerPACK for 4 pieces AA-size 1.2
                          V - 1.8 V batteries
                          (rechargeable NiMH, NiCd or non-
                          rechargeable Alkaline, MnO, Li)