QRB1A-A040B40B Siemens Flame Sensor

Overview

The Siemens QRB1A-A040B40B is a compact photoresistive flame detector designed for the supervision of yellow-burning oil flames in intermittent operation. It works by detecting the visible light radiation of the flame and is intended for use with various Siemens burner controls. This sensor is engineered for both frontal and lateral illumination, providing flexibility in burner mounting.

Features

• Normal sensitivity photoresistive element optimized for the visible light spectrum (maximum spectral sensitivity approximately 600 nm)
• Integrated 2-wire thermoplastic cable for straightforward electrical connection
• Compact design with a black casing indicating normal sensitivity
• Suitable for both frontal and lateral (90 degree) light entry
• Designed for intermittent operation in conjunction with oil burner controls

Specifications

• Model: QRB1A-A040B40B
• Casing Length: 50 mm
• Visible Cable Length: 40 cm
• Stripped Lead Length: 40 mm
• Casing Color: Black (Normal sensitivity)
• Protection Rating: IP40
• Operating Temperature: -20 C to +60 C
• Plug: Includes soft plastic plug for mounting

Applications

• Supervision of yellow-burning oil flames in industrial or commercial burners
• Used in connection with Siemens burner controls such as LAL, LME7, LMO, LMV, and LOA series
• Suitable for applications requiring a compact, cable-connected photoresistive sensor for intermittent burner cycles