| QRB1系列火焰探測(cè)器-電眼 品牌：SIEMENS（西門(mén)子）
產(chǎn)地：德國(guó)
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| 產(chǎn)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.
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| 技術(shù)參數(shù) |
| 主要參數(shù) |
| 保護(hù)等級(jí) |
IP40 |
| 當(dāng)連接至LOA.../LAL...時(shí)，電纜長(zhǎng)度 |
1.5m最大 |
| 連接電纜 |
2*0.75mm2,5.1mm直徑 |
| 重量 |
20...35g |
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| 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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