With this type of flame supervision, the UV radiation emitted by gas or oil flames is used to generate the flame signal.
这种类型的火焰探测器监测燃气或燃油火焰放出的UV 辐射产生的火焰信号。
But what they noticed was that even when they turned the flame off they were still getting a signal - in other words, the laser was breaking up as well as exciting the oxygen.
但他们发现，即使将火焰熄灭，仍可以获得一个信号——换句话说，就是激光在激发氧原子的同时也分成了两束。
Application to detect and signal an existing gas flame using flame rod or UV detector.
通过使用火焰杆或紫外检测器检测现有气体火焰并发出相应信号。
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