QRB1B-A048B40B Siemens Flame Sensor

Overview

The Siemens QRB1B-A048B40B is a compact photoresistive flame detector designed for the supervision of yellow-burning oil flames. Engineered primarily for use in intermittent operation, this sensor works in conjunction with Siemens burner controls to ensure reliable flame monitoring in heating and industrial combustion systems. It features a soft plastic plug for easy mounting and is designed to detect radiation in the visible light spectrum, specifically at a maximum spectral sensitivity of approximately 600 nm.

Features

• High-sensitivity photoresistor element optimized for yellow-burning oil flames
• Integrated soft plastic plug for secure, vibration-free mounting in a lateral groove hole
• Infused two-wire thermoplastic cable for durable electrical connection
• Compact design suitable for both frontal and lateral (90 degree) illumination
• High-visibility red casing indicating higher sensitivity levels
• Plug-and-play style installation with included cable ferrules

Specifications

• Model: QRB1B-A048B40B
• Casing Color: Red (High Sensitivity)
• Casing Length: 50 mm
• Visible Cable Length: 48 cm
• Stripped Length: 40 mm
• Protection Rating: IP40
• Temperature Range: -20 C to +60 C
• Weight: Approximately 0.25 kg
• Spectral Sensitivity: Maximum approx. 600 nm

Applications

• Supervision of yellow-burning oil flames in commercial and industrial burners
• Intermittent operation systems in HVAC and boiler plants
• Compatible for use with Siemens burner control units including LAL, LME7, LMO, LMV, and LOA series
• Specialized mounting configurations requiring lateral groove securement via plastic plug