|
|
| 西门子QRB3系列火焰探测器-电眼 |
| QRB3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 |
1.5m最大 |
| 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 | | | |
|
