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- Third Assistant Engineer (Steam-Motor-Gas Turbine Plants (Unlimited)) »
- Q538 - Steam Plants II
215. A photoelectric cell is installed in an oil fired boiler safeguard system to introduce proper resistance values to the electronic control circuit. This device is primarily sensitive to __________.
The photoelectric cell in this boiler safeguard system detects flame presence. It is designed to respond to the blue portion of the flame spectrum, which indicates stable combustion and minimizes false readings from hot brickwork.
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