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QRB3 | 光敏电阻/火焰探测器 燃烧器专用【SIEMENS西门子LANDIS】 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. 网站标注价格为参考价，产品质量有保证，长年备有大量库存现货，随时要货，随时发快递。全国范围内1-3天可以到达。 如需了解更详细，请来电索取技术资料。 旺旺:wellpat 电话：0755 2767 5552，1367 002 1005,136 7000 7925 EMAIL:wellpat@139.com 主页：http://wellpat.cn.alibaba.com
