QRB1 A-A 火焰探测器
品牌：SIEMENS（西门子）（原LANDIS&GYR品牌）
产地：德国
颜色：黑色
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.
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主要参数
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保护等级
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IP40
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当连接至LOA.../LAL...时，电缆长度
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1.5m最大
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连接电缆
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2*0.75mm2,5.1mm直径
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重量
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20...35g
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环境条件
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运输环境
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IEC 60 721-3-2
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内部条件
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class 2K2
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温度范围
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-20...+60oC
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湿度
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<95%
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运行环境
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IEC 60 721-3-3
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内部条件
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class 3K5
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机械条件
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class 3M2
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温度范围
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-20...+60oC
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湿度
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<95%
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不得进水
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此型号广泛应用于各个品牌的燃油燃烧器上，包括德国WEISHAUPT威索、意大利BALTUR百得、意大利ECOFLAM意高、瑞典BENTONE百通以及大部分国内品牌燃烧器。
