Siemens QRB1A-A068B70B flame sensor

Siemens QRB1A-A068B70B flame sensor — a reliable photodetector for flame monitoring in oil burners, designed for safe and stable operation of boiler and thermal equipment. The device is used in automatic combustion control systems and provides accurate flame presence monitoring during burner operation. Siemens QRB1A-A068B70B detects the light emission of the flame and transmits a signal to the burner control. In case of flame loss, the sensor instantly initiates an emergency shutdown of fuel supply, helping to prevent accidents, enhance equipment safety, and protect the system from damage. The model features high sensitivity, stable operation, and reliability under long-term use. The sensor is widely used in diesel and heavy oil burners of heating boilers, heat generators, and other thermal equipment requiring reliable combustion monitoring and uninterrupted automation operation. Advantages of Siemens QRB1A-A068B70B: • Reliable flame presence monitoring • Fast response to flame loss • Suitable for oil burners • High sensitivity and stable operation • Compatibility with Siemens burner controls • Compact design and easy installation • Durability and simple maintenance Specifications: • Device type: flame sensor / photodetector • Model: Siemens QRB1A-A068B70B • Purpose: flame monitoring for oil burners • Fuel type: diesel, heavy oil • Operating principle: photoelectric flame monitoring • Compatibility: Siemens LOA, LMO series burner controls and similar • Application: boilers, heat generators, burner devices • Mounting: built into burner equipment • Housing material: heat-resistant plastic