供应QRB1系列火焰探测器-电眼

产品说明： 
QRB1系列火焰探测器-电眼 
**：SIEMENS（西门子）

产地：德国
 
 产品介绍 
Photoresistive flame detectors for use with Landis & Staefa burner controls, for the supervision of oil flames in the visible light spectrum. The flame detectors are used primarily in connection with burner controls for small burners.

With this type of flame supervision, the radiation of oil flames in the visible light spectrum is used for generating the flame **. 

The light-sensitive element is a photoresistor. 

When there is no light, the detector′s resistance is in the MΩrange. 

The resistance drops as the intensity of illumination increases (kΩrange). 

In contrast to the selenium photocell of the RAR... detectors, glowing firebrick in the combustion chamber can be detected. 
 
 
 技术参数 
主要参数 保护等级 IP40 
当连接至LOA.../LAL...时，电缆长度 1.5m较大 
连接电缆 2*0.75mm2,5.1mm直径 
重量 20...35g 
 
 
环境条件 运输环境 IEC 60 721-3-2 
内部条件 class 2K2 
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