QRB1A-A150B70A1 Siemens Flame Sensor

Overview

The Siemens QRB1A-A150B70A1 is a high-precision photoresistive flame detector designed for the supervision of yellow-burning oil flames. Engineered for use with Siemens burner controls, this sensor plays a critical role in safety by ensuring no stray flames exist in the combustion chamber during intermittent operation. The detector utilizes a specialized photoresistive element to monitor light levels in the visible spectrum, providing reliable feedback to the burner control system to maintain optimal performance and safety.

Features

• High-sensitivity photoresistive element optimized for yellow-burning oil flames
• Integrated 150 cm thermoplastic cable for flexible installation
• Compact black housing design for space-efficient mounting
• Includes a small flange and clamp for secure, vibration-free positioning
• Designed for both frontal and lateral (90 degree) illumination
• Durable construction suitable for demanding industrial and commercial heating environments

Specifications

• Model: QRB1A-A150B70A1
• Spectral Sensitivity: Approximately 600 nm
• Cable Length: 150 cm
• Stripped Cable Length: 70 mm
• Housing Length: 50 mm
• Protection Rating: IP40
• Operating Temperature: -20 C to +60 C
• Sensitivity: Normal
• Casing Color: Black

Applications

• Supervision of oil flames in industrial and commercial burners
• Used in connection with Siemens burner controls such as LAL, LME7, LMO, LMV, and LOA series
• Integration into heating systems, industrial furnaces, and boiler units
• Safety monitoring for yellow-burning oil flames in intermittent burner operations