1Overview
The Model 951 nukeALERT is the essential preventative detection tool for disclosing the presence and intensity of gamma radiation to nontechnical personnel. It is small, rugged, and watertight, and it is more sensitive than the radiation meters first responders commonly carry. That extra sensitivity matters most with concealed radiological material, where levels shift with distance and shielding.
The nukeALERT 951 detects gamma radiation discreetly and alerts the wearer with either a vibration or an audible signal. Battery life reaches two years, and the unit recalibrates automatically in high background environments. A belt clip and a bright visual display support hands-free operation. The rugged micro-sized package gives HAZMAT and emergency response teams a watertight monitoring tool that holds up in the field. When a radiological emergency unfolds, a team carrying the nukeALERT 951 can survey a large area quickly and cost-effectively, thanks to the improvement in sensitivity and response time.
2Key Features
- Simple to use, with no training required
- One second response to full readings
- Bright display for night or day operation
- Audible chirp or discreet vibration alarm
- Extremely low false alarm rate
- Automatic calibration that filters varying background levels
- Rugged enclosure, watertight against extreme weather
- Standard belt clip attachment
- Two-year battery life, self powered
3Detector & Performance
The Model 951 is a pager-style Personal Radiation Detector (PRD). It is built around a Cesium Iodide (CsI) scintillator, which gives it more sensitivity than the Geiger-Mueller meters first responders typically carry. The detector responds to gamma radiation down to 20 keV and reaches full readings in under a second.
The unit auto-calibrates to background when it powers on, then self-adjusts when high background is present, which keeps the false alarm rate low. It signals through four escalating methods, so the wearer gets the alert in any condition.
Notification methods
| Method | Behavior |
|---|---|
| Audio alarm | Beeps increase as radiation strength rises |
| Vibration | Vibration pulses increase as radiation strength rises |
| Flashing LED | Flashes increase with strength; color changes from orange to red |
| Numeric readout | LED reads "1" through "9," with "9" the highest |
4Specifications
| Parameter | Specification |
|---|---|
| Function | Gamma ray detection |
| Detector type | Cesium Iodide scintillator |
| Radiation types detected | Gamma only |
| Energy response | Down to 20 keV |
| Response time | Less than 1 second |
| Notification methods | Audio alarm, vibration, flashing color-changing LED, and a 1 through 9 numeric readout |
| Calibration | Automatic when turned on; self-adjusts when high background is present |
| Battery type | 2 AA alkaline |
| Battery life | 2+ years at 48 hours per week |
| Size | 3.75 x 2.5 x 1.25 in |
| Weight | 6.4 oz with batteries |
| Operating temperature range | -10 F to 122 F (-23 C to 50 C) |
| Environmental rating | Heavy rain; passes 3-foot drop test on concrete (watertight) |
| Placement / attachment | Belt clip or belt pouch |
| Alpha / beta / X-ray / neutron | Not detected (gamma only) |
| Dose rate range | verify |
| Sensitivity (specific value) | verify |
| IP rating | verify (rated for heavy rain and watertight, no IP code published) |
| Comms / connectivity | verify |
5Applications
- Homeland security and nuclear security safeguards
- Emergency services, HAZMAT, and counter-terrorism response
- Radiological area mapping
- Geological radiation survey
Typical end users
- Public safety officers (federal, state, local)
- First responders and HAZMAT teams
- Border patrol and cargo inspectors
- Radiation safety officers
- Military forces
6Options & Accessories
| Option | Description |
|---|---|
| Belt clip | Standard belt clip attachment, included |
| Belt pouch | Optional belt pouch carry |
| Additional accessories | verify against the latest released datasheet |
7Ordering / In the Box
The standard Model 951 nukeALERT ships ready to wear with the integrated CsI scintillator, the standard belt clip, and two AA alkaline batteries. Add the belt pouch for an alternate carry. Because the unit auto-calibrates and runs for two years on its own batteries, it stays mission-ready with minimal upkeep.
To order a Model 951, request a quote, or arrange a demonstration, contact Berkeley Nucleonics at info@berkeleynucleonics.com or 800-234-7858.