QRB1A-B080B70A Siemens Flame Sensor

Overview

The Siemens QRB1A-B080B70A is a compact photoresistive flame detector designed for the supervision of yellow-burning oil flames. It is engineered primarily for use with Siemens burner controls in intermittent operation, providing critical safety by detecting visible light radiation from the flame. This sensor is highly versatile, supporting both frontal and lateral (90 degree) light entry, making it suitable for various burner mounting configurations.

Features

• Photoresistive sensing element optimized for the visible light spectrum
• Normal sensitivity calibrated for yellow-burning oil flames
• Compact design with a durable plastic housing
• Integrated 2-wire thermoplastic cable for easy installation
• Designed for both frontal and lateral illumination
• Compatible with a wide range of Siemens burner controls, including LAL, LME7, LMO, LMV, and LOA series
• Metalized housing to prevent static charging from fan air flow

Specifications

• Model: QRB1A-B080B70A
• Sensitivity: Normal (Black casing)
• Casing Length: 65 mm
• Visible Cable Length: 80 cm
• Stripped Cable Length: 70 mm
• Spectral Sensitivity: Approximately 600 nm
• Protection Rating: IP40
• Operating Temperature: -20 C to +60 C
• Mounting Position: Optional
• Weight: Approximately 0.25 kg

Applications

• Supervision of yellow-burning oil flames in industrial and commercial burners
• Used in conjunction with Siemens burner controls for safety shut-off functions
• Suitable for burners requiring either frontal or 90-degree lateral light entry
• Typically integrated by OEMs into package burners, line burners, and various heat generators