Thorn Security S251i+ Triple Waveband Infrared Flame Detection
| Product | Thorn Security S251i+ Triple Waveband Infrared Flame Detector |
| Brand | Thorn Security (Johnson Controls / Hochiki Group) |
| Model | S251i+ |
| Reference | TG_GB |
| Product Type | Triple Waveband IR Flame Detector |
| Detection Method | Triple Infrared (IR3) Waveband Flame Detection |
| Function | Detects open flames by sensing IR radiation across three simultaneous wavebands; provides fast, reliable flame detection while rejecting false alarms from hot objects, sunlight and artificial lighting |
| Detection Range | Up to 65 metres (Class 2 sensitivity) |
| Field of View | 90° cone angle |
| Response Time | Less than 5 seconds (Class 1 at 1 metre) |
| Operating Voltage | 18V – 32V DC |
| Output | Relay alarm + 4–20 mA analog output |
| Communication | RS-485 / Modbus (optional) |
| Housing Material | Die-cast Aluminium – IP66 rated |
| Protection Rating | IP66 – Dust tight and strong jet water protected |
| Operating Temperature | -55°C to +75°C |
| Explosion Classification | ATEX Zone 1 / Zone 2 – IECEx certified |
| Standards Compliance | EN 54-10, ATEX, IECEx, FM, UL |
| Application | Oil & Gas Facilities, Petrochemical Plants, Marine Engine Rooms, Aircraft Hangars, Refineries |
| Suitable For | Offshore Platforms, Tankers, Gas Turbine Areas, Paint Spray Booths, Ammunition Stores |
| Manufacturer | Thorn Security / Hochiki Group, UK |
| Country of Origin | United Kingdom |
| Availability | In Stock |
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