| 
        R2868日本HAMAMATSU公司生产的火焰传感器和传感器应用电路板。
		我司是日本HAMAMATSU公司中国区域一级代理商主营紫外线照度计专用紫外线传感器G5842,火灾报警装置用火焰传感器R2868配套消防器材厂商,现货供应日本HAMAMATSU公司R2868火焰传感器C3704探测模块,R2868称为火焰发现者.在火星产生瞬间能够准确地发现, 
		并且对非可见光的高传输的电晕现象可以完全解除.Hamamatsu R2868 是利用紫外线 TRON 
		通过金属的光电效果和瓦斯乘法效果来发现火星源. 它可以探测 185 到 
		260个不同的狭窄光谱敏感源.它对可见光完全没有感应,也不需要过滤器任何可见光(不像半导体探测器). 
		它具有很小的体积和很宽敏感角度(择向性),并能快速准确地发现从火焰被发出的弱紫外线.(能够探测 5 m 或在稍远处发现香烟点大小的火焰.) 
        Compact UV 
        Sensor with High Sensitivity and Wide Directivity, 
        Suitable for 
        Flame Detectors and Fire Alarms.    Hamamatsu 
        R2868 is a UV TRON ultraviolet detector that makes
        use of 
        the photoelectric effect of metal and the gas multiplication
        effect. 
        It has a narrow spectral sensitivity of 185 to 260 nm, being
        
        completely insensitive to visible light. Unlike semiconductor
        
        detectors, it does not require optical visible-cut filters, thus
        making 
        it easy to use.   In spite of 
        its small size, the R2868 has wide angular sensitivity
        
        (directivity) and can reliably and quickly detect weak ultraviolet
        
        radiations emitted from flame due to use of the metal plate
        cathode 
        (eg. it can detect the flame of a cigarette lighter at a
        
        distance of more than 5 m.). 
            The R2868 is 
        well suited for use in flame detectors and fire
        alarms, 
        and also in detection of invisible discharge phenomena
        such as 
        corona discharge of high-voltage transmission lines.
         
        APPLICATIONS★     
        
        Flame detectors for gas/oil lighters and matches 
        ★     
        
        Fire alarms★     
        
        Combustion monitors for burners★     
        
        Inspection of ultraviolet leakage 
        ★     
        
        Detection of discharge★     
        
        Ultraviolet switchingGENERAL 
        Spectral 
        Response185 to 260nm   Window 
        Material    UV glass 
        Weight 
        Approx.     1.5g 
        MAXIMUM 
        RATINGS 
        Supply  
        Voltage    400Vdc   Peak    
        Current    30mA 
        Average 
        Discharge   Current   1ma   Operating  
        Temperature   -20 to +60C 
        
        CHARACTERISTICS (at 25C) 
        Discharge 
        Starting Voltage (with UV radiation)   280Vdc Max. 
        Recommended  
        Operating  Voltage   325±25Vdc   Recommended  
        Average    Discharge  Current  100μA 
        Background 
        10cpm Max    Sensitivity 
        4)5000cpm Typ. ★UV 
        TRON Driving Circuit C3704 series (Option) |