UVTRON® 是紫外线开/关探测器,可快速远距离检测火焰发出的微弱紫外线,因而适合用于火焰探测器和火警。它们的光谱灵敏度范围是 185 nm 到 300 nm,且对可见光完全不敏感。它们使设计具有简单电路的高灵敏度、快速响应的 UV 检测系统成为可能。
当火焰或放电发出的紫外线到达 UVTRON 并照射到阴极时,光电子从阴极表面释放。这些光电子被拉向阳极,同时与气体分子碰撞并将其离子化,产生二次电子。然后,电子与其它气体分子反复碰撞并将其离子化,直到最终到达阳极。利用这种称为气体倍增的现象,UVTRON 可放大电流并将其输出为信号。
UVTRON 可以检测火焰和放电发出的弱紫外线。这样即使在远距离和大空间内也能实现精确检测,从而在安装位置上提供更大的自由度和灵活性。
UVTRON 的光谱响应范围仅在 185 nm 至 300 nm 之间,因此在可见光区域不敏感。使用 Ni(镍)电极的型号甚至对来自太阳的紫外线也不敏感,因此不仅可以在室内使用,还可以在室外使用,无需光学可见光截止滤光片。
由于 UVTRON 直接检测从火焰或放电发出的紫外线,因此它可以在点火或放电发生后立即检测到火焰。其他利用烟雾或热感测的方法很难或无法实现这一点。UVTRON 可在几毫秒内检测紫外线并输出信号,确保高水平的安全性,并允许立即采取所需措施。
UVTRON 紧凑轻便,可轻松安装在紧凑型探测器内。我们提供广泛的产品阵容,让您可以针对具体用途和安装位置选择完全适合的 UVTRON。
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