| QRB1系列火焰探测器-电眼 品牌：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 signal. -
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 | 1.5mzui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 | | |
