Flame detectors are common equipment in industries such as thermal power plants

The flame detector is a common equipment in industries such as thermal power plants, and when it is working, it is controlled by the processor on the flame detector

1. In addition to the 4-20mA signal of flame intensity, the output signal of the flame detection processor also provides the output signal of fire and fault switch (contact capacity 220VAC, 4A). The threshold and hysteresis zone of the switch signal The delay time can be adjusted through the panel. The flame detection amplifier should also have a fault self-diagnosis function. The self-checking alarm unit will periodically detect the amplifier, and the power overload protection circuit will monitor the power supply to the probe at any time. It can detect and distinguish amplifier faults and probe faults. When a failure occurs, the amplifier panel should be able to display an alarm and distinguish the type of failure. After the failure is eliminated, press the reset button and the device will return to normal operation.

2. The flame processor is equipped with sensitivity adjustment and background level adjustment circuits, which can be adjusted by maintenance personnel to eliminate interference signals.

3. The signal provided by the flame detector is sufficient to meet the needs of the design of coal and oil burners and boiler protection safety logic. Ensure that the flame detection protection during the start, load, and shutdown periods of the boiler is fully put into operation. The flame detection signal directly adopts the switch signal output by the self-fire detection amplifier without any other condition correction.