Kromek Group plc (LON:KMK), a worldwide supplier of detection technology focusing on the medical, security screening and nuclear markets, has announced the launch of the D5 RIID, the world’s smallest high performance radioisotope identification device. The ruggedised device, with ultra-low false alarm rate, is designed for military, homeland security and industrial use.
The D5 RIID was developed under a programme with the Defense Threat Reduction Agency of the US Department of Defense. It detects a wide range of sources, including special nuclear material and mixed, shielded and heavily masked configurations. It provides high accuracy dose measurement and has an industry-leading ultra-low false alarm rate of less than 1 in 24 hours. The D5 RIID combines this advanced performance with being small, lightweight and easy-to-use – capable of being operated in one hand. It can also be used when wearing all levels of PPE, including gloves. It offers multiple modes of configuration, including being able to provide app-based training, and can be easily integrated into standard and custom networks.
It is the first device to be launched in Kromek’s new D5 product range, which expands the Group’s radiation detection portfolio to encompass devices specifically designed for more challenging use cases and harsh environments. This next-generation of product has a larger crystal, which enables higher accuracy and sensitivity – capable of detecting mixed, shielded and heavily masked configurations including special nuclear material – as well as being ruggedised.
Dr Arnab Basu, CEO of Kromek, said: “We are delighted to have launched the D5 RIID, which truly sets a new benchmark in radioisotope identification. The level of accuracy, combined with small size, far exceeds competing military standard detectors, enabling the rapid identification of radiological threats. As the first of our new D5 range, this device expands our portfolio to provide products ideal for use in harsh environments and for more challenging applications alongside our existing D3 solutions that are aimed at fleet deployment for large-scale networking across urban areas. We are proud to be continuing to drive innovation in this crucial area to enable rapid, informed decisions to be made in response to a radiation threat wherever it may appear.”
For further information on the D5 RIID, please visit: https://www.kromek.com/product/d5-riid/
D5 RIID Detector Specification
| Detector type | CLLBC – Gamma and Neutron detection |
| Detector size | 1.5″ diameter x 1.5″ long |
| Gamma energy range | 30 keV to 3 MeV |
| Gamma dose rate range | 0.01 µSv/h (10 µR/h) to 100 µSv/h (10 mR/h) spectroscopic100 µSv/h (10 mR/h) to 1 Sv/h (100 R/h) high dose sensor |
| Dose accuracy | ± 10% for Cs137 |
| Gamma resolution | Typically 3.5% @ 662 keV |
| Area efficiency* | 1.62 relative to a 2″ x 2″ Ø Nal |
| Neutron sensitivity | 𝐴𝜖𝑡= 16cm2 |
| Neutron detector gamma rejection | Better than 10-7 meets ANSI N42.34 (2015) section 6.7 |
| Operational temperature range | -20°C to 50°C |
| Humidity | Up to 93% RH |
| Moisture/dust | IP67 |
| Batteries | Primary cells: 2 x AA field replaceableInternal rechargeable: Li-Ion >2.25 Ah |
| Battery capacity (primary cells) | 24 hours at normal background |
| Battery charging | 1 hour to 50% capacity, 4 hours to full charge |
| Wired interface | USB-C |
| Wireless interface | BluetoothWi-Fi 802.11a/b/c/g/n |
| Firmware updating | Update over USB |
| Display | 2.8″ colour antiglare with backlight suitable for both high and low light |
| LED | Three colour |
| Alarm notifications | Visual, audio and vibration |
| Device size | 173.1mm x 79mm x 41.1mm |
| Device weight | 660 g (1.47 lb) |
| File storage | ANSI N42.42 |
| Confirmation mode | 30 sec to 5 minutes |
| False alarm rate | Better than ANSI N42.34 (2015) |
| Isotope ID | ANSI N42.34 (2015) |
| Hardware compliance | ANSI N42.34 (2015) |
| Rugged military standard compliance | MIL-STD-810Gm w/Charge 1 |
| Calibration stabilisation | Sourceless natural atmospheric |
* Area efficiency = Aε662 keV /R662 keV1.5
