The identiFINDER® R425 is the next generation of the most deployed radionuclide identification device (RID), offering 360-degree coverage so you can locate and measure gamma and neutron radioactive sources with confidence. It builds on FLIR’s trusted algorithms with advanced heuristics and hybrid identification techniques. With the familiar identiFINDER user interface and 3-button control, you can operate the R425 quickly, communicate results, and take command of any situation, in any environment, remotely. When other systems fail in extremely high gamma fields, the identiFINDER R425 provides pinpoint accuracy and remains fully operational. The R425 provides an ideal balance of size, weight, and performance for various missions including surveying, emergency response, and environmental monitoring.
| Technology | Radionuclide identification device (RID); Gamma and Gamma/Neutron Models |
| Gamma Detector - Nal (TI) | 45 x 45 x 45 mm cubic detector with silicon photomultiplier (SiPM) |
| Neutron Detector - ZnS (GN model only) | 27 x 58 x 5 mm moderated panels (2 each) |
| Energy Range (Gamma) | 20 keV - 3 MeV |
| Gamma Sensitivity (Cs-137) | 1610 cps/μSv/h |
| Neutron Sensitivity | more than 4 cps/nv |
| Gamma Spectrum Length | 1024 channels |
| Dose Rate Range (Cs-137) | 10 µrem/h – 1 rem/h ± 10%, 100 nSv/h – 10 mSv/h ± 10% |
| Dose Rate Range ID Mode (Cs-137) | 0.1 µrem/h – 5 mrem/h, 1 nSv/h – 50 µSv/h |
| Overload Dose Rate Range | more than1 rem/h, 10 mSv/h |
| Stabilization | Sourceless gain stabilization |
| Linearization | Real time linearization of gamma energy |
| Sample Introduction | Absorption of EM gamma and neutron emissions |
| Threats | Detects neutron and gamma radiation emitted from natural occurrences in the environment, special nuclear material, industrial, or medical material |
| Display & Alerts | 2.7” diagonal (400x240 pixels) screen; sunlight readable; visible through polarized glasses |
| Communications | USB-C (2x), Bluetooth (BLE 5.0) |
| Data Storage | 8GB internal memory |
| Input Voltage | 100-240 AC (wall adapter and USB-C cable supplied) |
| Battery Specification | Internal Li-ion cells; additional user-selectable external battery (1 each 16650 Li-ion or 2 each CR123) ; hot-swappable |
| Cold Start Time | ≤20 seconds from cold start |
| Operating Temp | -30 to 60 °C |
| Operating Humidity | 10 to 93%, non-condensing |
| Storage Temperature | -10 to 35 °C |
| Dimensions (L x W x H) | (235 x 100 x 95 mm) |
| Weight | ≤1.2 kg |
| Enclosure & Protection | Injection molded housing with overmold; rating IP67 according to IEC 60529; MIL-STD 810g Salt / Fog compliant |
