QRB1A-A035B40A Siemens Flame Sensor

Overview

The Siemens QRB1A-A035B40A is a compact photoresistive flame detector designed for the supervision of yellow-burning oil flames. This sensor is primarily used in conjunction with Siemens burner controls for intermittent operation, monitoring the visible light spectrum to ensure safe and efficient burner cycles. It utilizes a light-sensitive photoresistor element that changes resistance based on light intensity to generate a flame signal.

Features

• Photoresistive sensing element optimized for the visible light spectrum of oil flames
• Normal sensitivity rating with a maximum spectral sensitivity of approximately 600 nm
• Integrated 2-wire thermoplastic cable for simplified wiring
• Compact black housing design for versatile mounting
• Designed for both frontal and lateral (90 degree) illumination
• High reliability for intermittent burner operations

Specifications

• Model: QRB1A-A035B40A
• Housing Length: 50 mm
• Visible Cable Length: 35 cm
• Stripped Cable End: 40 mm
• Protection Rating: IP40
• Operating Temperature: -20 C to +60 C
• Weight: Approximately 20 g to 35 g
• Connection: 2-wire cable with ferrules, without plug or connector

Applications

• Supervision of yellow-burning oil flames in commercial and industrial burners
• Used with Siemens burner controls such as LAL, LME7, LMO, LMV, and LOA series
• Suitable for systems requiring frontal or side-viewing flame detection
• Integration into original equipment manufacturer (OEM) burner packages