QRB1B-A070B70A Siemens Flame Sensor

Overview

The Siemens QRB1B-A070B70A is a photoresistive flame detector designed for the supervision of yellow-burning oil flames in the visible light spectrum. This compact sensor is engineered for use with Siemens burner controls in intermittent operation. It features a red housing indicating increased sensitivity and is supplied with an integrated two-wire thermoplastic cable, providing a reliable safety solution for combustion monitoring.

Features

• Photoresistive sensing element with maximum spectral sensitivity at approximately 600 nm
• Increased sensitivity design specifically for yellow-burning oil flames
• Compact 50 mm casing length for easy integration into burner assemblies
• Durable red plastic housing for clear identification of sensitivity level
• Integrated 70 cm cable with ferrules for straightforward wiring
• Designed for both frontal and lateral illumination

Specifications

• Model: QRB1B-A070B70A
• Part Number: BPZ:QRB1B-A070B70A
• Sensor Type: Photoresistive
• Sensitivity: High / Increased
• Casing Length: 50 mm
• Cable Length: 70 cm
• Stripped Length: 70 mm
• Degree of Protection: IP40
• Operating Temperature: -20 C to +60 C
• Connection: 2-wire cable with ferrules, without plug or strain relief

Applications

• Supervision of yellow-burning oil flames in industrial and commercial burners
• Used in conjunction with Siemens burner controls such as LAL, LME7, LMO, LMV, and LOA series
• Suitable for intermittent burner operation cycles
• Applied in heating and thermal processing systems requiring reliable flame presence detection