A fire is a burning phenomenon in which an object emits light or heat in air or oxygen. It refers to the burning phenomenon of heat, smoke, and flame. At the beginning of the fire, the flame combustion showed a unique characteristic, that is, the flame contained ultraviolet rays and infrared rays of different wavelengths that could not be discerned by the naked eye.
Infrared flame detectors, in addition to the existing infrared flame detectors and dual-wave infrared flame detectors, the protection of road tunnels, the three-wavelength infrared flame detector combined with the characteristics of tunnel fires and the technical advantages of three-wavelength infrared flame detectors. A company successfully developed a three-wavelength infrared flame detector specifically for tunnel fire detection. In addition to the technical advantages of a common three-wavelength flame detector, the detector has the following unique features:
1. Double detection, the detection angle is 180 degrees, no need to adjust the detection angle during installation, to ensure that there is no dead angle in the tunnel fire detection;
2, built-in lightning protection measures, can effectively prevent lightning interference on the line, to ensure that the system is reliable and stable in mountainous and multi-lei areas.
3. The side wall is hung from 2.5 to 3.5 meters from the ground. The detection effect is not affected by obstacles such as vehicles, and the installation and maintenance are simple and convenient.
4. The effective detection distance can be ensured when the monitoring window is contaminated by 50%, which greatly reduces the maintenance period and cost.
5. Unique dustproof and waterproof full-sealed structure design, the protection grade is IP66, which is not affected by dust and oil in the tunnel, which fundamentally guarantees the stable and reliable operation of the detector.
The flame detector combines an ultraviolet detector that detects ultraviolet wavelengths and an infrared detector that detects infrared wavelengths. It is an ultraviolet/infrared composite detector. The UV/IR composite flame detector is sensitive only to certain relatively short wavelength segments, minimizing misoperation due to surrounding non-fire factors, and with high sensitivity sensors for minimal current consumption Maximum sensitivity is achieved, while the ability to judge the flame is enhanced, and the reliability of fire detection is improved.
