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FS20X -Multi-Spectrum UV/Dual IR/VIS Fire and Flame Detector
Based on the reliable and high-performance SS4 detector, the FS20X represents a significant leap forward in the integration of infrared and ultraviolet detection technologies. The FS20X is a multispectrum, dual UV/IR/VIS flame and fire detector. It features a proven UV sensor with a sunscreen. The FS20X offers faster fire responses (without false alarms) over a wider temperature range and a much broader detection range than conventional UV/IR detectors.
Conventional and older UV/IR detectors, which use 4.3-micron “narrowband” IR sensors, will not react to fires with heavy smoke or if the detector lens is contaminated with oil or other substances, because the UV and 4.3-micron signals are attenuated, obstructed, or absorbed by the thick smoke or lens contamination. Furthermore, these older UV/IR detectors will not trigger an alarm if installed behind ordinary glass.
The two microprocessors ensure high intrinsic safety, as well as fast and reliable performance. The master microprocessor performs high-speed digital sampling and signal processing calculations, while the slave microprocessor handles the various sensor data, performs self-diagnostics, and provides communication and interface versatility: it also provides additional memory for storing the event log and FirePic™ data.
The FS20X detector has a detection range exceeding 200 feet (with a very high sensitivity setting) to detect a one-square-foot heptane reference fire, and its field of view, in terms of volumetric coverage, is significantly greater than that of most UV/IR detectors. Therefore, fewer detectors are required compared to other manufacturers’ solutions.
Product Description
• Patented WideBand IR™ infrared technology* combined with ultraviolet
• Detects a 0.1 m² heptane fire at over 60 m
• Patented electronic frequency analysis*
• Optical sensor operating in the visible light spectrum for optimal false alarm rejection •
Selectable detection sensitivities
90° viewing cone, 100% all-around vision with sunscreen
· . . . . Dual microprocessors for reliable performance
· . . . . Real-time clock for precise event timestamping
· . . . . FirePic™: up to 6 pre-fire event data storage
• Event Log: Up to 200 time-stamped events
• Integrated RS-485 Modbus communication
• Integrated non-isolated 4-20 mA analog output (receiver or transmitter)
• Fire, alarm, and fault check relays
• Automatic optical path and electronic self-test
• Widest operating temperature range
• Patented electronic module* for component protection with plug-in terminations and easy on-site installation
• Two ¾” NPT or 25 mm conduit connections
• Low power consumption
• High immunity to radio and electromagnetic interference
•FM certified
| Specification | Details |
|---|---|
| Model | FS20X |
| Detector Type | Multi-Spectrum UV/Dual IR/VIS Fire & Flame Detector |
| Detection Technology | Ultraviolet (UV), Dual Infrared (IR), and Visible (VIS) Sensors |
| Detectable Fires | Hydrocarbon and Non-Hydrocarbon Fires |
| Detection Range | Up to 60 m (200 ft) for a 0.1 m² (1 ft²) n-Heptane fire |
| Response Time | Typically 3–5 seconds |
| Field of View | 90° Full Cone (±45° from Axis) |
| Spectral Sensitivity | UV: 185–260 nm, VIS: 400–700 nm, Near IR: 0.7–1.1 µm, Wide Band IR: 1.1–3.5 µm |
| Sensitivity Levels | Very High, High, Medium, Low (Selectable) |
| Operating Voltage | 24 VDC Nominal (18–32 VDC) |
| Power Consumption | 83 mA (Normal), 133 mA (Alarm), Additional 155 mA (Heater) |
| Outputs | 4–20 mA, RS-485 (Modbus/FireBus II), 3 Relay Outputs |
| Relay Rating | 1 A @ 24 VDC |
| Operating Temperature | -40°C to +85°C |
| Storage Temperature | -55°C to +110°C |
| Humidity | 5–98% RH (Non-Condensing) |
| Ingress Protection | NEMA 4X / IP66 Equivalent |
| Housing Material | Copper-Free Aluminum or Stainless Steel |
| Approvals | FM, ATEX, IECEx, SIL 2 (Model Dependent) |