QRB1A-A068B70B Siemens Flame Sensor

Overview

The Siemens QRB1A-A068B70B is a compact, photoresistive flame detector designed for the supervision of yellow-burning oil flames. Functioning within the visible light spectrum, this sensor is engineered for intermittent operation and works in conjunction with various Siemens burner controls. It features a soft plastic plug for easy mounting and a durable thermoplastic cable, ensuring reliable flame monitoring in industrial and commercial heating applications.

Features

• Photoresistive sensing element specifically tuned for yellow-burning oil flames
• Normal sensitivity rating with a black housing for easy identification
• Integrated soft plastic plug design for simplified installation in a burner hole with a lateral groove
• High spectral sensitivity peak at approximately 600 nm to maximize visible light detection
• Compatible with a wide range of Landis & Staefa and Siemens burner controls
• Durable, infused 2-wire thermoplastic cable for secure signal transmission

Specifications

• Model: QRB1A-A068B70B
• Sensing Type: Photoresistive
• Sensitivity: Normal
• Housing Color: Black
• Housing Length: 50 mm
• Visible Cable Length: 68 cm
• Stripped Lead Length: 70 mm
• Connection Type: Includes soft plastic plug and ferrules
• Operating Temperature: -20 C to +60 C
• Protection Rating: IP40

Applications

• Supervision of yellow-burning oil flames in intermittent burner operations
• Used in industrial and commercial oil-fired burners and boilers
• Compatible with Siemens burner control types LAL, LME7, LMO, LMV, and LOA
• Suitable for both frontal and lateral (90 degree) illumination mounting configurations