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| 西門子QRB3系列火焰探測器-電眼 |
| QRB3系列火焰探測器-電眼
品牌：SIEMENS（西門子）
產(chǎn)地：德國 |
| 產(chǎn)品介紹 |
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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.
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With this type of flame supervision, the radiation of oil flames in the visible light spectrum is used for generating the flame signal.
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The light-sensitive element is a photoresistor.
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When there is no light, the detector′s resistance is in the MΩrange.
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The resistance drops as the intensity of illumination increases (kΩrange).
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In contrast to the selenium photocell of the RAR... detectors, glowing firebrick in the combustion chamber can be detected. | |
| 技術(shù)參數(shù) |
| 主要參數(shù) |
| 保護(hù)等級 |
IP40 |
| 當(dāng)連接至LOA.../LAL...時，電纜長度 |
1.5m最大 |
| 連接電纜 |
2*0.75mm2,5.1mm直徑 |
| 重量 |
20...35g | | |
| 環(huán)境條件 |
| 運(yùn)輸環(huán)境 |
IEC 60 721-3-2 |
| 內(nèi)部條件 |
class 2K2 |
| 溫度范圍 |
-20...+60ºC |
| 濕度 |
<95% |
| 運(yùn)行環(huán)境 |
IEC 60 721-3-3 |
| 內(nèi)部條件 |
class 3K5 |
| 機(jī)械條件 |
class 3M2 |
| 溫度范圍 |
-20...+60ºC |
| 濕度 |
<95% |
| 不得進(jìn)水 | | | |
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