The JTW-XCD-SF800A Distributed Fiber Optic Linear Temperature Fire Detector is a continuous distributed fiber optic temperature sensing system. It employs Optical Time Domain Reflectometry (OTDR) technology and Raman scattering effects to measure temperature variations along the fiber. In this system, the fiber optic cable serves both as a transmission medium and a sensor. Laser pulses travel along the fiber, interacting with the fiber medium to produce extremely weak backward Raman scattering light (temperature-sensitive anti-Stokes light and temperature-insensitive Stokes light). After separation by a wavelength division multiplexer, the light intensity ratio and return time of the backward scattered signal light are detected by a high-sensitivity photoelectric detector. This is followed by high-speed signal acquisition and weak signal processing, enabling real-time temperature distribution information to be obtained.

Product Features

The JTW-XCD-SF800A features various alarm algorithms such as set temperature, differential temperature, and temperature rise. It offers audio, visual, image, and relay alarm methods, and comes with a wealth of standard interfaces for easy connection with fire alarm controllers and other fire protection equipment, ensuring good compatibility and expandability.

Applicable Scenarios

The Distributed Fiber Optic Temperature Sensing System, as an advanced linear fire detector both domestically and internationally, boasts advantages such as long measurement distance, no measurement blind spots, and real-time measurement. It is widely used in power, traffic tunnels, subways, petrochemical industries, and dams, among other fields.