| QRB1系列火焰探測器-電眼 品牌：SIEMENS（西門子） 產地：德國 |
| 產品介紹 |
| 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. | |
| 技術參數 |
| 主要參數 | | 保護等級 | IP40 | | 當連接至LOA.../LAL...時，電纜長度 | 1.5mzui大 | | 連接電纜 | 2*0.75mm2,5.1mm直徑 | | 重量 | 20...35g | | |
| 環境條件 | | 運輸環境 | IEC 60 721-3-2 | | 內部條件 | class 2K2 | | 溫度范圍 | -20...+60ºC | | 濕度 | <95% | | 運行環境 | IEC 60 721-3-3 | | 內部條件 | class 3K5 | | 機械條件 | class 3M2 | | 溫度范圍 | -20...+60ºC | | 濕度 | <95% | | 不得進水 | | |
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