| 详细说明 |
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| 品牌：西门子 | 产地：德国 | | 价格：40人民币/条 | 规格：QRB1 | 简要说明： SIEMENS西门子QRB1系列火焰探测器-电眼 | |  | | 详细介绍：| QRB1系列火焰探测器-电眼 品牌：SIEMENS（西门子）
产地：德国
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| 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.
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| 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最大 |
| 连接电缆 |
2*0.75mm2,5.1mm直径 |
| 重量 |
20...35g |
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| 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 |
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