QRB1A-A150B70A Siemens Flame Sensor

Overview

The Siemens QRB1A-A150B70A is a photoresistive flame detector designed for the supervision of yellow-burning oil flames in conjunction with burner controls. This compact sensor is engineered to detect the visible light radiation emitted by oil flames, ensuring safe and reliable burner operation. It is commonly used in industrial and commercial heating systems where precise flame monitoring is essential to prevent hazardous conditions.

Features

• Photoresistive sensing element with maximum spectral sensitivity at approximately 600 nm
• Designed for both frontal and lateral (90 degree) illumination to suit various burner mounting configurations
• Normal sensitivity rating optimized for standard yellow-burning oil flames
• Integrated cable with a length of 150 cm and 70 mm stripped ends for simplified wiring
• Durable black plastic casing designed for industrial environments
• Compatible with a wide range of Siemens burner controls, including LAL, LME7, LMO, LMV, and LOA series

Specifications

• Model: QRB1A-A150B70A
• Type: Photoresistive flame detector
• Sensitivity: Normal
• Housing Length: 50 mm
• Cable Length: 150 cm (1500 mm)
• Stripped Cable Length: 70 mm
• Operating Temperature: -20 C to +60 C
• Protection Rating: IP40
• Weight: Approximately 0.054 kg (0.12 lbs)
• Spectral Sensitivity: Maximum approx. 600 nm

Applications

• Supervision of yellow-burning oil flames in industrial and commercial burners
• Used in conjunction with Siemens burner controls for safety shut-off and monitoring
• Suitable for heating plants and boiler systems requiring reliable oil flame detection
• Applicable in burner systems where side-viewing or frontal-viewing light entry is required