QRB1A-A050B40A2 Siemens Flame Sensor

Overview

The Siemens QRB1A-A050B40A2 is a compact photoresistive flame detector designed for the supervision of yellow-burning oil flames in intermittent operation. It works in conjunction with various Siemens burner controls, such as the LAL, LME7, LMO, LMV, and LOA series, to ensure safe and reliable flame monitoring by detecting visible light radiation.

Features

• Photoresistive sensing element optimized for the visible light spectrum of oil flames
• Normal sensitivity with a black casing for standard industrial applications
• Designed for both frontal and lateral (90 degree) illumination to suit various mounting needs
• Vibration-free mounting via a guide groove in the securing flange and a cam on the detector clamp
• Integrated two-wire thermoplastic cable for direct connection without extra connectors

Specifications

• Model: QRB1A-A050B40A2
• Casing Length: 50 mm
• Visible Cable Length: 50 cm
• Stripped Cable Length: 40 mm
• Spectral Sensitivity: Approximately 600 nm
• Operating Temperature: -20 C to +60 C
• Degree of Protection: IP40
• Included Accessories: Large flange and clamp

Applications

• Supervision of yellow-burning oil flames in commercial and industrial burner systems
• Monitoring oil boiler flames to ensure stable combustion and prevent random shutdowns
• Use in heating plants and boiler installations requiring intermittent operation control
• Integration into burner systems using Siemens LMV or LMO series burner controls