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Radiation Source Direction Finding System Ecotest SVNG-T
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PDF Instruction 1
The SVNG-T radiation direction finding system manufactured by Ecotest is an advanced hardware complex engineered for continuous real-time monitoring of ambient gamma radiation levels and calculating the precise direction to a radioactive threat. Specifically constructed for integration onto special-purpose mobile platforms, military radiation-chemical reconnaissance vehicles, and civil defense units, this solution guarantees high operational reliability under extreme environmental conditions.
The system architecture comprises one BVNG-T display and control unit mounted inside the vehicle cabin and four external BDBG-T detection blocks positioned strategically on the front, rear, left, and right exterior perimeters. Data processing algorithms evaluate dose rate differentials across all channels to pinpoint the radiation vector relative to the vehicle heading with an angular resolution not exceeding 45 degrees, triggering instant visual and acoustic alerts upon threshold breaches.
Seamless system integration into host vehicle infrastructure is achieved via an industrial RS-485 digital interface, allowing full bidirectional telemetry transfer to an onboard specialized computer over distances up to 10 meters. With wide operating supply voltage ranges (12 to 28.5 V DC) and robust IP67/IP54 weatherproofing, the SVNG-T provides uninterrupted 24-hour continuous radiation surveillance.
Application Scope
- Radiation and chemical reconnaissance vehicles of armed forces
- Mobile emergency response units and civil defense command vehicles
- Perimeter security and radiation mapping for hazardous nuclear facilities
- Specialized armored personnel carriers and mobile monitoring posts
- Environmental radiation monitoring fleets in emergency zones
Specifications
| Parameter | Value |
| Gamma Radiation DER Measurement Range | 1·10-7 to 20 Sv/h |
| Direction Finding Angular Resolution | Not more than 45° relative to vehicle bow |
| Basic Relative Error (137Cs calibration, confidence 0.95) | (15 + 2 / H*(10)) %, where H*(10) is measured DER in µSv/h |
| Registered Gamma Energy Range | 0.06 to 3.0 MeV |
| Energy Dependence (0.06 to 1.25 MeV) | Not more than ±25 % |
| Additional Temperature Error (per 10 °C shift from 20 °C) | Not more than 5 % |
| Ingress Protection Rating | BVNG-T: IP54, BDBG-T: IP67 |
| Continuous Operation Time | Not less than 24 hours (with subsequent downtime <= 1 h) |
| Supply Voltage Range (DC) | 12 to 28.5 V DC |
| Current Consumption (at 24 V nominal) | Not more than 2 A |
| Data Transmission Interface | RS-485 (cable length up to 10 m) |
| Operating Temperature Range | -30 °C to +60 °C |
| Extreme Temperature Range | -40 °C to +70 °C |
| BVNG-T Dimensions and Weight | 190 × 180 × 90 mm, 2.5 kg |
| BDBG-T Dimensions and Weight (w/o collimator) | 120 × 50 × 50 mm, 0.5 kg |
Package Contents
- BVNG-T direction determination unit (1 pc)
- BDBG-T remote gamma detection blocks (4 pcs)
- Interconnecting cable set (up to 10 m RS-485 interface connection)
- Mounting and installation hardware kit
- Operational documentation and technical manual