Thermo Fisher Scientific
RadEye PRD4 Personal Radiation Detector
Compact, sensitive personal radiation detector for quickly detecting and locating radiation sources, part of the RadEye PRD and SPRD family.
The PRD4 is intended for basic screening by users for whom radiation is not the primary duty. It does not include isotope identification – for that, see the RadEye SPRD.
- CsI(Tl) detector with 200 cps per µSv/h at 662 keV
- NBR distinguishes artificial radiation from natural background and reduces false alarms by 80 % without increasing alarm thresholds, according to the manufacturer
- Neutron indication via prompt gamma analysis
- Sourceless gain stabilisation running continuously in the background
- Optional Bluetooth with iOS and Android app, RadResponder compliant
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Technical data
| Radiation detected and analysed | Gamma and X-rays plus neutrons via prompt gamma |
|---|---|
| Detector | CsI(Tl), one low dose rate detector |
| Sensitivity (662 keV) | 200 cps per µSv/h |
| Dose rate range | 10 nSv/h – 250 µSv/h |
| Energy range | 58 keV – 6 MeV (dose and dose rate); 20 keV – 6 MeV (count rate, pager function) |
| Alarm notification | Display, LED, sounder, vibe |
| Battery | 2 × AAA alkaline (> 170 h) or rechargeable NiMH (> 100 h) |
| Ruggedness | IP 65; drop tested 1.5 m on concrete (with rubber sleeve) |
| Operating temperature | −20 °C to 50 °C |
| Dimensions | 4.1 × 2.6 × 1.6 inches (with rubber protective sleeve) |
| Weight | 179 g including batteries and rubber sleeve |
| Standards compliance | ANSI N42.32, IEC 60846-1 |
Source: Thermo Fisher Scientific, RadEye PRD and SPRD brochure (2024). Full specifications are available in the documents.
