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Radionuclide Identifying Device (RID)


  • Detects and identifies nuclides in mixed, shielded and heavily masked configurations including Special Nuclear Material
  • Spectra view and analysis with data storage for Reachback
  • Small, lightweight (<1,25 Kg, <2,7 lbs)
  • Underwater operation to 10 meters (IP68)
  • User Interface with day and night view
  • High accuracy dose measurement
  • Finder mode with directionality
  • Spectrometry at up to 1 million cps between 10 KeV to 10 MeV
  • Replaceable batteries
  • Multiple modes of configuration
  • Operation from remote PC with full view of the screens
  • N42.42 data format
  • Superior efficiency with rugged non-hygroscopic BGO detector


The DiscoveRAD is an ultra-compact, rugged, sensitive Radionuclide Identifying Device (RID). It provides superior usability by offering a wider energy range, higher throughput, and better stability in a wearable handheld. For the first time, a 2”x 1” size BGO detector is combined with high precision, high-speed digital electronics in an ergonomic lightweight enclosure. The novel design features a water-tight aluminium housing and is small enough to be worn on a belt.

Law enforcement, customs, and other agencies are using RIDs as part of a national strategy to stop the illicit trafficking of radioactive material. When radiation sources are detected by screening devices such as radiation portal monitors or radiation pagers, RIDs are used to analyse the nature of the radioactive source and determine if it presents a high-level threat. Radiological emergency personnel, firefighters, and other responders also use RIDs for situational awareness during radiological emergencies. DiscoveRAD is a portable RID with an extensive radionuclide library, fully compliant with ANSI standards for the RID category. DiscoveRAD can continuously scan and identify radiological threats in real time even in mixed source environments with a high level of confidence. Detects and identifies nuclides in mixed, shielded and heavily masked configurations including Special Nuclear Material.

All measurements are saved on the instrument (25 GB user storage capacity) and can easily be transferred without special software.
Its multiple interfaces and the built-in web interface allow easy and flexible reach-back operation. The interface also provides for secure remote maintenance and remote operation of the instrument.


Technical Specifications


• 235 mm x 88 mm x 92 mm (9.3” x 3.5” x 3.6”)
• Weight: 1,250 g (2.7 lbs)

Scintillation Detector

• One crystal for detection of both gamma and neutron
• 51 x 25 mm (2“x1“) BGO (Bi4Ge3O12) detector

Radiation Measurement Performances

• 70 Nuclides (exceeding IEC 62755, ANSI 42.34)
• Operative in less than one minute
• Identification of 1 μCi of Cs-137 in 13s
• Real-time linearization of gamma energy


• Energy range (Gamma): 10 keVee ÷ 100 MeVee
• Maximum input count rate in id mode: 1 million cps (Cs-137)
• Gamma sensitivity: 1850 cps/μSv/h (Cs-137)


• According to ANSI N42.34
• Sensitivity: 5 cps/nv

Dose-Rate range (Cs-137)

• Dose rate range: 10 nSv/h – 10 mSv/h (1 μrem/h – 1 rem/h) ±30 %
• Dose rate range ID mode: 10 nSv/h – 200 μSv/h (1 μrem/h – 20 mrem/h)
• Dose rate overload range: 0.2 mSv/h – 500 mSv/h (0.02 rem/h – 50 rem/h)


• GPS: switchable 72 channel M8 engine (Navstar, Galileo, Glonass, Beidou)

Communication interfaces

• USB-C power and data port
• Wi-Fi access point 2,4 GHz 802.11 g, encryption WPA-PSK AES
• Bluetooth LE for connection to the Mobile App

Data acquisition

• MCA depth: 1024 channels


• Dimensions: 235 x 88 x 92 mm / (9.3” x 3.5” x 3.6”)
• Weight: 1250 g / (2.7 lbs)
• Housing material: aluminium

Operating condition

• Protection rating: IP68 according to IEC 60529 10 m (0.4″) 30 min submergible
• Operating/storage temperature: -20 °C to 50 °C (-4 °F to 122 °F)
• Operating humidity: up to 93 % at 40 °C (104 °F) non-condensing
• Charging temperature: 0 °C to 40 °C (+32 °F to 104 °F)


• User-interface update frequency is 0.5 s
• Operative modes: Dose rate, Survey, Easy finder (directionality), Identification, expert modes
• Web server: Web Interface for setup, data download and remote control
• Data streaming: Supporting Sigma streaming API via BT tethering
• Data reporting: Supporting Sigma reporting API via BT tethering
• Session data: Continuously tracking GPS position,
dose rate, alarms and identification results
• Night mode
• Screen rotation
• 30 GB internal data storage

Power supply

• Secure rechargeable Li-Ion battery pack (1 + 1 spare included)
• Run time at 20 °C (68 °F): > 6 h (non-alarm state)
• Run time at -20 °C (12 °F): > 1 h (non-alarm state)
• AC/DC included 220/100 V/AC to 5V/DC

Mobile app

• Remote Operation: Use any mobile device to remote operate the instrument
• Reachback: functionality (Mail with attached ANSI 42.42 data)

Standard compliance

• RID environmental tests: IEC 62706
• Data format: ANSI 42.42, IEC 62755


• Rugged carrying case, Micro-B socket usb cable


Radionuclide Identifying Device (RID)
Product page
  • Documentation
  • Software
  • Firmware

Brochures, Flyers

Name File extension File size Revision Last update
DiscoveRAD - The most efficient Radionuclide Identifying Device (RID) PDF 5.29 MB 0 June 14th, 2022





Trial – Software License

Copyright © 1998-2018 C.A.E.N. S.p.A

Licence Agreement for “CAEN Software or Firmware” (collectively, the “CAEN SwFw”)

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C.A.E.N. S.p.A (“C.A.E.N.”) is making this CAEN SwFw freely available on the basis that it is accepted as found and that the user checks its fitness for purpose prior to use.

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Tel No: +39.0584.388398 , Fax No.: +39.0584.388959, E-mail: support.computing@caen.it


Ordering Options

Code Description
WSRAD501AAAA DiscoveRAD 501 Radiation Isotope Identifier   RoHS
WADRADBATTXA Spare battery for DiscoveRAD 501   RoHS


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