Siemens QRB1B-D025B40B flame sensor

Siemens QRB1B-D025B40B flame sensor — a reliable photodetector for flame monitoring in oil-fired 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 QRB1B-D025B40B detects the light emission of the flame and transmits a signal to the burner control. In the event of flame loss, the sensor instantly initiates an emergency fuel shut-off, helping to prevent accidents, improve operational safety, and protect the system from damage. The model features high sensitivity, stable operation, and reliability during 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 automatic operation. Advantages of Siemens QRB1B-D025B40B: • Reliable flame presence monitoring • Fast response to flame loss • Suitable for oil-fired burners • High sensitivity and stable operation • Compatibility with Siemens burner controls • Compact design and easy installation • Durability and ease of maintenance Specifications: • Device type: flame sensor / photodetector • Model: Siemens QRB1B-D025B40B • Purpose: flame monitoring for oil-fired burners • Fuel type: diesel oil, heavy oil • Operating principle: photoelectric flame detection • Compatibility: Siemens burner controls series LOA, LMO and similar • Application: boilers, heat generators, burner devices • Mounting: built into burner equipment • Housing material: heat-resistant plastic