QRB1A-A150B70A2 Siemens Flame Sensor

Overview

The Siemens QRB1A-A150B70A2 is a photoresistive flame detector designed for the supervision of yellow-burning oil flames. It is specifically engineered to work in conjunction with burner controls such as the LAL, LME7, LMO, LMV, and LOA series. This sensor detects the visible light radiation emitted by oil flames, ensuring safe burner operation by verifying the presence of a stable flame and preventing fuel delivery in the event of a flame failure.

Features

• High-quality photoresistive element for accurate flame detection in the visible spectrum
• Normal sensitivity calibrated for yellow-burning oil flames
• Compact 50 mm black plastic housing for durable and easy installation
• Integrated 150 cm thermoplastic cable for flexible wiring and long-reach connections
• 70 mm stripped cable ends for simplified termination to burner controls
• Support for both frontal and lateral illumination to suit various burner mounting configurations
• Enhanced safety by monitoring for extraneous light sources in accordance with industry regulations

Specifications

• Model: QRB1A-A150B70A2
• Sensing Type: Photoresistive
• Sensitivity: Normal
• Housing Length: 50 mm
• Housing Color: Black
• Cable Length: 150 cm (1500 mm)
• Stripped Length: 70 mm
• Operating Temperature: -20 C to +60 C
• Protection Rating: IP40
• Weight: Approximately 0.07 kg to 0.11 kg
• Spectral Sensitivity: Maximum approximately 600 nm

Applications

• Supervision of yellow-burning oil flames in industrial and commercial burners
• Use in intermittent burner operations requiring reliable safety shut-off
• Integration with Siemens burner control units like the LMV5 or LMO series
• Replacement and maintenance for HVAC systems, boilers, and furnace combustion equipment