Siemens FDL241-9-CN Linear Beam Smoke Detector
1. Overview of Siemens FDL241-9-CN
People also know the Siemens FDL241-9-CN Linear Beam Smoke Detector as the Siemens FDL241-9. Engineers designed this linear smoke detector for reliable smoke detection. It works well in large areas like warehouses, atriums, industrial sites, and commercial buildings.
The Siemens FDL241-9-CN detector meets the national standard GB14003-2005 for smoke fire detectors. It uses light attenuation by smoke to detect early-stage fires accurately.
The system consists of a transmitter and receiver housed in a single unit. The transmitter sends out an infrared (IR) light beam to a prismatic reflector. The reflector then sends the beam back to the receiver. The receiver converts the returning IR signal into an electrical signal that a microprocessor analyzes.
When smoke particles enter the detection path, the infrared beam’s intensity weakens. When the attenuation level exceeds a certain limit, the FDL241-9 triggers an alarm.
The system sends this alarm to the fire alarm controller. This shows that there is smoke or fire. The detector has a built-in alarm light for local status. It also uses ASAtechnology™ (Advanced Signal Analysis) to reduce false alarms.
The Siemens FDL241-9-CN Linear Beam Smoke Detector provides reliable smoke detection over long distances of 5 to 100 meters. This makes it perfect for protecting high ceilings or open areas from fire.
2 .Key Parameters of Siemens linear smoke detector fdl241-9linear smoke detector
l Complies with GB14003-2005 national standard for linear beam smoke detectors
l Transmitter and receiver design utilizing infrared light emission and reflection
l Detects fires according to the principle of light attenuation by smoke
l Signal weakening triggers an alarm once the predefined threshold is reached
l The distance measurement feature helps identify and compensate for environmental factors
l Built-in alarm indicator light for visual alarm confirmation
l Reliable smoke detection in large rooms (indoor applications)
l Detection range: 5–100 meters
l ASAtechnology™ for advanced signal analysis and reduced false alarms
l Three selectable sensitivity levels for flexible configuration
l Event control detection method
l Transmits four hazard levels to the control unit
l Microprocessor-based signal analysis for accuracy and reliability
l Self-testing and automatic contamination compensation functions
l Resistant to external light and electromagnetic interference
l Single-unit design housing both transmitter and receiver
l D-BUS communication protocol with independent addressing
l Multiple reflectors available for various distance configurations
l Indicator LED: Flashes every second (normal operation) / Constant on (alarm state)
l Operating voltage: 12–33 VDC
l Static operating current: 0.8 mA
l External and programmable door light output
l Operating temperature: –25°C to +60°C
l Storage temperature: –30°C to +75°C
l Humidity: ≤95% RH
l Terminal wire size: 0.2–1.5 mm²
l Protection rating: IP65 (EN60529/IEC529)
l Weight: 0.440 kg
l Colour: Pure white (RAL9010)
l Dimensions (with FDLB291): 135 × 135 × 115 mm
3. Key Features of siemens fdl241 9 Detector
l ASA Linear Smoke Detector Unit: Incorporates Advanced Signal Analyzing Technology for stable performance and reduced false alarms.
l Infrared Detection Principle: Uses infrared light attenuation to detect smoke presence effectively.
l Reliable Smoke Detection in Large Spaces: Designed for high-ceiling environments, such as airports, atriums, tunnels, and industrial plants.
l Microprocessor Control: Ensures precise signal interpretation and alarm triggering.
l Automatic Compensation: Maintains consistent sensitivity even as optical surfaces accumulate dust or dirt.
l Visual Status Indication: Integrated LED indicators show both normal operation and alarm conditions.
l Flexible Installation: Adjustable for detection ranges from 5 to 100 meters, compatible with multiple reflector options.
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