BK51/IR3/S Tunnel Three-Band Far Infrared Flame De

Brief IntroductionAccording to the features of fires in the tunnel and the technical advantages of the triple-wavelength infrared flame detector, Xi'an Bokang Electronics Co., Ltd successfully develops the triple-wavelength infrared flame detector specially for the detection of fire in the tunnel. Besides the technical advantages of the common triple-wavelength infrared flame detector, the detector also has the following unique advantages: 1. duel-technology detection with a detection angle of 180 DEG, no detection angle adjustment needed during installation, no blind angle left in the detection of fire in the tunnel; 2, built-in lightning protective measures, which can effectively prevent the interference on the circuit caused by lightning and ensure the reliable and stable operation of the system in a zone full of mountains and lightning; 3, being hung on the side wall 2.5 3.5m from the ground, which ensures the detection effect free of the impact of barriers like automobiles and brings about simple and convenient installation; 4, ensuring effective range of detection in case of 50% of the monitoring window polluted, which greatly reduces maintenance cycle and cost; 5, unique dustproof waterproof pan seal structure with the protective grade of IP65, which enables the detector to be free of the impact of dust and oil pollution in the tunnel and fundamentally ensures the reliable and stable operation of the detector.Characteristics-Dual-technology detection with the detection angle of 180° -Built-in lightning protective measures -Immunity from electromagnetic radiation, sunlight and background heat radiation -Patented technology of multiple-frequency triple-wavelength infrared detection -Operation in a wide temperature range -Aplurality of output modes with flexibility and convenience -Multi-microprocessor with reliable performance - Protective grade: IP65 -Unique contour design, convenient and quick installationTechnical ParametersBasic Technical Parameters -Spectral Response: 0.7 1.0umIR,4.0 4.4umIR,5 6umIR -Fire Response Time: <10S -Range of Detection: horizontal≤180°, vertical≤80° -Ambient Temperature: -40°C 70°C -Humidity: ≤95 percents RH(40 + 2°C) -Detection Distance: 70m(petrol)Electrical Parameters-Operating voltage: 18V 32VDC - Operating Current: ≤20mA in a standby status (24VDC)≤35mA (24VDC)in an alarm status -Output Mode: relay output--------for normality: the contacts of the fault relay are normally closed,while the contacts of the fire alarm relay are normally open For Fault: the contacts of the fault relay become normally open from the normally closed status For Extinction: the contacts of the fire alarm relay become normally closed from the normally open status Rating of Contact: 0.5A /125VAC 1A /30VDC 0.3A/ 60VDC 4-20mA Output-------For Fault: 0+0.5mA. For Fire Ignition: 5 mA±5 percents.For Extinction: 18mA±5 percentsMechanical Characteristics-Cable Outlet Screw: M12 -Material: cast aluminum - External Dimensions: 210mm×165mm×134mm(length × width × height) -Weight: <1.7kg(cast aluminum)Certifications-Protective Grade: IP65 -Executing Standards: GB15631-1995,JT/T610-2004 -Inspection Standards: in accordance with the national standard of GB15631-1995