QRA2 火焰探測器

品牌：SIEMENS（西門子）(原LANDIS&GYR)

產地：德國

火焰探測器與西門子燃燒控制器配合使用，用于燃氣或燃油火焰的監(jiān)測。

火焰探測器用于監(jiān)測燃氣火焰、黃色或藍色燃油燃燒火焰以及點火火花的校對。

這種類型的火焰探測器監(jiān)測燃氣或燃油火焰放出的 UV 輻射產生的火焰信號。輻射探測器是一個帶 2 個電極的 UV 光電管，當它被光譜中 190...270 nm 范圍的光照射時便會點燃，從而啟動火焰探測器電路內的電流。UV 不會對燃燒室內灼熱的耐火磚,日光或照明光線產生反應。

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 the 190...270 nm 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.