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A flame sensor
/ supervisior suitable for detection of flame in
Oil / Gas / Coal fired burners. Highly sensitive
only to UV light emitted by flame and not to any
refractory glow or day light.
UV tube consists of two electrodes sealed in a
gas filled quartz envelope. When a voltage is
applied across the electrodes and the tube is
exposed to UV source like flame, the cathode
emits electrons which ionizes the gas in the
tube. When the filled gas is ionized the tube
becomes conductive and current flows throgh the
tube. This says-FLAME ON condition. |
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