The D5 RIID provides a unique high performance and versatile radiation detection device in a wearable package for military, homeland security, and industrial personnel.

The D5 RIID is a small, light, less than 4% resolution, wearable Radioisotope Identification Device (RIID) with an expansive radioisotope library and an ultra low false alarm rate. It continuously scans and accurately identifies radiological threats in real time, even in mixed source environments.

The D5 RIID combines small form factor with powerful radiometric performance and enhanced sensitivity at a medium resolution of less than 4%. The D5 RIID has an area efficiency which is 62% higher when compared with conventional RIIDs.


D5 RIID's New Additional Features

NORM Suppression

By simply enabling Kromek’s NORM suppression algorithm in the device settings, the differentiation between normal background sources and true sources is significantly enhanced, further improving the accuracy of your data.

User restricted settings

Further tailor the D5 RIID to the needs of your mission with the option for PIN-protected settings. Select which users have access to certain settings.

Set different dose rate thresholds

A total of three thresholds can now be set up on the D5 RIID based on your detection needs e.g., different thresholds for ‘low’, ‘medium’ and ‘high’ radiation levels.

Reset accumulated dose on the device

With a simple accumulated dose reset button now on the device, you can quickly reset this metric on the go without having to head back to a central location.

Store saved background files

Different background files are saved as ANSI N42.42 files on the device. Therefore, the appropriate background can be selected on a mission to accompany all new confirmation mode scans taken.

DEF-STAN and MIL-STD Testing

Alongside Kromek’s rigorous testing and collaboration of the D5 RIID, the device has now been tested in accordance with the relevant DEF-STAN and MIL-STD tests.

The high sensitivity of the device means that any source, even very low activity sources, can be accurately detected.

An extensive built-in calibrated isotope library enables the D5 RIID to detect and identify mixed, shielded or heavily masked isotope configurations and confirm radionuclide identification across naturally occurring radioactive materials (NORM), industrial, medical, and special nuclear materials.

D5 RIID meets both ANSI N42.34 and the more demanding US Department of Homeland Security Domestic Nuclear Detection Office (DNDO) technical capability standards.

D5 RIID on a Pelicase

Why resolution matters?

Resolution refers to the width of a single energy peak at a specific energy on a spectral data plot. The higher the resolution, the more distinct and clearly separated the energy peaks.

More information about the D5 RIID

Small and lightweight

The D5 RIID is only 660g, compared with legacy instruments often weighing more than 2kg. Measuring 173 x 79 x 41mm, the D5 RIID is light and unobtrusive enough to be both belt and body worn. It is also ideal for prolonged one-handed operation and is easily usable by someone wearing full PPE.

Low false alarm rate

While constantly scanning for threats and maintaining a high level of sensitivity, a low false alarm rate is essential. With a false alarm rate of just one in 24 hours, the D5 RIID consistently delivers accurate reliable information.

Networked Detectors

The D5 RIID can interface with or be integrated into existing systems, including smartphones, to enable reachback capability. Spectral results with enhanced resolution obtained in the field can be transmitted immediately to an offsite laboratory for secondary analysis. The D5 RIID can also link to a network of hubs and sensors to give a real time overview of a radiological threat.

Watch the D5 RIID in action

Easier navigation of data to aid use in the field

Localisation Mode

Localisation mode allows a user to pinpoint the location of a radioactive source. During normal scanning, the device will sound a tone approximately once per second. As the device moves closer to a radioactive source, the interval between these tones decreases so that there are more tones per second. The shorter the interval between tones, the closer the user is to a source. This tone can be audible or vibrational and is aided visually by a graph showing the gamma counts per second in yellow and the neutron counts per second in blue.

Viewing Spectral Data

The spectral data which accompanies every collected confirmation mode scan has been enhanced to give more information. The “scale” button can be used to move through the spectrum to see all energies. The up and down buttons on the D5 RIID controls can be used to navigate the cursor to give the exact counts per second data at a chosen energy.

Remote Mode

This mode allows a user to take readings, even when the device is at a distance. Entering remote mode on the D5 RIID and connecting it to a laptop or PC via USB or Bluetooth allows a user to utilise the D5 Settings App to remotely initiate and collect data from a scan without manually pressing the D5 RIID controls. The spectral data is saved in ANSI N42.42 file format. It is also possible to perform scans of the background radiation levels in the same way. This ensures the safety of the operator and speeds up the process of collecting data.

Expand your detection capabilities; let no source go unseen

Simply connect our new Alpha Beta Probe to the D5 RIID and extend the D5 RIID’s field-proven Gamma and Neutron detection capability to Alpha and Beta.

Kromek Alpha Beta Probe


Find out more about the D5 RIID

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Download the D5 RIID Brochure

A PDF with the complete specifications for the D5 RIID.

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Make sure the D5 RIID meets your needs and budget.

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