供应QRA55.D27高敏电眼

产品说明： 
QRA55系列火焰探测器-电眼 
**：SIEMENS（西门子）

产地：德国
 
 产品介绍 
The flame detectors are used for the supervision of gas flames, yellow- or blue-burning oil flames and for ignition spark proving. Continuous operating mode.

With this type of flame supervision, the UV radiation emitted by gas or oil flames is used to generate the flame **. 

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. 

The detector’s UV cell is located behind a swivelling shutter at the front end of the detector tube which is flanged to the housing. A quartz glass window protects the tube and the shutter against dirt. The detector’s housing accommodates a stepper motor to drive the shutter and the electronics to control the shutter.

Using the adapter AGG16.C, this flame detector can be mounted either directly on the burner, on a viewing tube or on a combustion chamber viewing hole. 
 
 
 型号表 
型号 灵敏度 探测管长度 主电压 分离UV管型号 
QRA55.C27 普通 77mm AC220...240V 450240657 
QRA55.C17 普通 77mm AC100...110V 450240657 
QRA55.D27 高敏 77mm AC220...240V 450240657 
QRA55.D17 高敏 77mm AC100...110V 450240657 
 
 技术参数 
主要参数 UV单元平均寿命 10000小时（在50oC） 
保护等级 IP54 
重量 
- AGG16.C 650g 
- QRA53 900g 
 
 
环境条件 运输环境 IEC 60 721-3-2 
内部条件 class 2K2 
机械条件 class 2M2 
温度范围 -20...+60oC 
湿度 <95% 
运行环境 IEC 60 721-3-3 
内部条件 class 3K5 
机械条件 class 3M2 
温度范围 -20...+60oC 
湿度 <95% 
不得进水