燃烧器专用电眼西门子火焰探测器QRA2
QRA2系列火焰探测器-电眼
品牌：SIEMENS（西门子）(原LANDIS&GYR)
型号：QRA2
产地：德国
火焰探测器与西门子燃烧控制器配合使用，用于燃气或燃油火焰的监测。
火焰探测器用于监测燃气火焰、黄色或蓝色燃油燃烧火焰以及点火火花的校对。
这种类型的火焰探测器监测燃气或燃油火焰放出的 UV 辐射产生的火焰信号。
辐射探测器是一个带 2 个电极的 UV 光电管，当它被光谱中nm 范围的光照射
时便会点燃，从而启动火焰探测器电路内的电流。
UV 不会对燃烧室内灼热的耐火砖,日光或照明光线产生反应。
The flame detectors are used for the supervision of gas flames, yellow- or blue-burning oil flames and for ignition spark proving.
With this type of flame supervision, the UV radiation emitted by gas or oil flames is used to generate the flame signal.
The radiation detector consists of a UV-sensitive cell with 2 electrodes, which ignite when illuminated with radiation in thenm range of the spectrum, thereby triggering a current in the flame detector circuit.
The UV cell does not respond to glowing firebrick in the combustion chamber, daylight or light from the boiler room illumination.
