QRB1B-A035B40A Siemens Flame Sensor

Overview

The Siemens QRB1B-A035B40A is a high-sensitivity photoresistive flame detector designed for the supervision of yellow-burning oil flames in conjunction with burner controls. This compact sensor is engineered for intermittent operation, detecting visible light radiation to ensure safe and reliable flame monitoring in industrial and commercial heating systems. It features a distinctive red housing to indicate its higher sensitivity level compared to standard models.

Features

• High-sensitivity photoresistive element optimized for yellow-burning oil flames
• Red plastic housing for easy identification of sensitivity rating
• Compact mechanical design with an integrated two-wire thermoplastic cable
• Suited for both frontal and lateral (90 degree) illumination
• Durable construction with an IP40 protection rating
• Easy installation options with or without mounting flanges and clamps

Specifications

• Model: QRB1B-A035B40A
• Sensitivity: High (Selected)
• Casing Length: 50 mm
• Visible Cable Length: 35 cm
• Stripped Cable Length: 40 mm
• Spectral Sensitivity: Approximately 600 nm
• Operating Temperature: -20 C to +60 C
• Protection Rating: IP40
• Weight: Approximately 0.018 kg

Applications

• Supervision of yellow-burning oil flames in HVAC and industrial burner systems
• Used in connection with Siemens burner controls such as LAL, LME7, LMO, LMV, and LOA series
• Suitable for burners requiring intermittent operation and high-precision flame detection
• Ideal for mounting configurations requiring either frontal or side-viewing light entry