BK52Ex/紫外辐射的爆炸防紫外线的火焰检测

Brief IntroductionThe UV Flame Detector is provided with a highly sensitive UV sensor to monitor the early UV radiations of flame. The unique UV flame sensor is capable of responding to the UV radiations at the moment of fire alarm and ignition of the explosive; the unique circuit design enables the UV flame detector to be adapted to various environments and technical requirements, and the special logic circuit helps to prevent false alarm caused by solar radiation. The UV flame detector is particularly suitable for detecting invisible flames such as hydrogen, silane, ammonia, hydride and metal fires. The flame detector, which is applicable to accurate flame detection in the industrial environment, is capable of working in environmental extremes like high/low temperature, high dampness, knock, etc.Characteristics-Ultraviolet (UV) spectral detection -High Explosion prevention and dustproof grade -Operation with a wide range of temperature -Detection in a 120 DEG wide taper zone -Real-time self-diagnosis function -Immunity from electromagnetic radiation -Patented and industrialized contour design -Adjustable sensitivity -Standard current output of 4-20mA, standard RS-485interface, passive contact outputTechnical ParametersBasic Technical Parameters -Spectral Response: 185 260nm UV -fire response time: <3S -Monitoring angle: ≤120° -Ambient Temperature: -40°C 70°C -Ambient Humidity: ≤95 percents RH(40 + 2°C) -Detection Distance: 15m(0.1square meterspetrol)Electrical Parameters-Operating Voltage: 18V 32VDC -Indicator Lamp: flash for normality and keep lighting for alarm - Operating Current: ≤20mA in a standby status (24VDC)≤40mA (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 alarm: 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 Normality: 5 mA±10% For Fire Alarm: 18mA±10% RS-485 Output-------RS-485 standard interface for being connected with equipmentMechanical Characteristics-Weight: <1.7kg(cast aluminum) <3.2kg(stainless steel) -External dimensions: 103mm×149mm×160mm(length × width × height) -Cable outlet screw: standard 3-G3/4" (1”=25.4mm) -Material: cast aluminum with stainless steel optionalCertifications-Explosion Prevention Mark: ExdIICT6 -Dust Explosion Prevention Mark: DIP A21 TA,T6 -Model inspection: In accordance with national standard of GB12791-2005 -Protective grade: IP65 -Standards: GB12791-2006,GB3836.1-2000,GB3836.2-2000,GB12476.1-2000Applications-Chemicals--- production, storage and transportation -Electricity generation--- pump zones, machine rooms and unmanned zones -Printing ---solvent treating, flattening and drying techniques -Aerospace---hydroxide, hydrazine and hydrogen fuel -Automobiles--- manufacture, spray booths -Paint--- manufacture -Warehouses--- storage of combustibles -Rubber industry---manufacture and composition -Petrochemicals--- production, storage and transportation -Explosive and munitions---storage, loading and unloading -Pharmaceutical industry