YXHJ-4Explosion-proof flame monitoring and control boxEquipped with a UV photosensitive tube as a flame sensor, it features compact size and weight, ease of use, reliable operation, and long service life. It is widely applicable for flame monitoring and shutdown alarm on various gas and oil-fired boilers, as well as in locations requiring flame supervision.This monitor is only sensitive to generated ultraviolet light, showing no response to light and radiant heat from high-temperature furnace walls, and has strong anti-interference capabilities. When installing, avoid sensitive light sources such as electric welding and iodine tungsten lamps.

I. Features:　　　　　　

Monitor the combustion state of the furnace, promptly alarm and automatically close the fuel valve in the absence of fire; prevent fuel leakage and potential danger. The control box includes a flameout or ignition signal transmission function, capable of transmitting signals to the DCS or PLC.

Two、Key Technical Parameters　　　　　　　　　　　　　　　　　    

1. Working Voltage: 24VDC, ±10%

2. Input Signal: Peak signal from an ultraviolet flame sensor

3. Output Signal: Relay alarm normally open contact (0.3A), closes when a flame is present, opens when no flame is present.

4. Effective Measurement Distance: 4 meters