QRB1A-A080B70A Siemens Flame Sensor

Overview

The Siemens QRB1A-A080B70A is a compact photoresistive flame detector designed for the supervision of yellow-burning oil flames. This sensor is engineered for intermittent operation, primarily in industrial and commercial burner systems where it works in conjunction with specific burner controls to ensure safe ignition and flame monitoring. By detecting radiation in the visible light spectrum, it provides a critical safety link, shutting down the system if a flame is not detected during operation.

Features

• High-sensitivity photoresistive element optimized for the visible light radiation of oil flames
• Compact mechanical design with an infused 2-wire thermoplastic cable
• Designed for both frontal and lateral (90 degree) illumination, offering flexible mounting options
• Black housing indicates normal sensitivity levels
• Vibration-free mounting achieved through a guide groove in the securing flange and a cam on the detector clamp
• Reliable signal transmission with minimal interference risk when installed according to guidelines

Specifications

• Model: QRB1A-A080B70A
• Spectral Sensitivity: Maximum approximately 600 nm
• Housing Length: 50 mm
• Visible Cable Length: 80 cm
• Stripped Length: 70 mm
• Sensitivity: Normal
• Operating Temperature: -20 C to +60 C
• Protection Rating: IP40
• Weight: Approximately 0.023 kg

Applications

• Supervision of yellow-burning oil flames in intermittent burner operations
• Integration with Siemens burner controls such as LAL, LME7, LMO, LMV, and LOA series
• Used in industrial package burners, line burners, and various heating systems requiring reliable oil flame detection
• Suitable for HVAC systems where yellow-burning oil is the primary fuel source