Siemens QRA55.E17 UV flame sensor

Siemens QRA55.E17 ultraviolet flame detector is a professional flame monitoring sensor for industrial gas, liquid fuel, and dual-fuel burners. The device is designed to detect ultraviolet radiation from the flame and is used in automatic combustion control systems to ensure safe and stable operation of boiler and thermal equipment. Siemens QRA55.E17 provides continuous monitoring of flame presence during burner operation. When the flame disappears, the detector instantly sends a signal to the burner control, initiating emergency fuel shutoff. This helps prevent dangerous situations, enhance industrial safety, and protect equipment from damage. The QRA55.E17 model features high sensitivity, resistance to electromagnetic interference, and stable operation under prolonged use. The detector is widely used in industrial boilers, heat generators, process furnaces, drying units, and other equipment requiring reliable combustion control. Advantages of Siemens QRA55.E17: • Accurate flame monitoring via ultraviolet radiation • Fast response to flame loss • Suitable for gas, liquid fuel, and dual-fuel burners • Compatibility with Siemens burner controls • High reliability and long service life • Resistance to industrial loads and interference • Easy installation and maintenance. The Siemens QRA55.E17 ultraviolet flame detector is in demand in industrial thermal power engineering and automation systems where safety, uninterrupted operation, and precise combustion control are especially important. Using original Siemens equipment helps reduce the risk of emergency shutdowns and increase the efficiency of burner equipment operation.