QRI2A2.B180B Siemens Flame Detector

Overview

The Siemens QRI2A2.B180B is a high-precision infrared (IR) flame detector designed for the supervision of gas, oil, and other hydrocarbon flames that emit infrared light. Engineered for both continuous and intermittent operation, this sensor is a critical safety component for industrial and commercial burner systems. It utilizes an infrared-sensitive photoresistor and an integrated flame signal amplifier to ensure reliable detection and electronic self-supervision, making it compatible with high-demand burner controls like the Siemens LMV5 series.

Features

• Infrared-sensitive flame detecting element with a spectral sensitivity maximum of approximately 2 µm
• Integrated flame signal amplifier for precise and reliable signal processing
• Designed for frontal illumination (forward viewing) to capture radiation behind the burner’s baffle plate
• Electronic self-supervision allows for use in continuous operation without safety interruptions
• Impact-proof black plastic housing with a dust-tight lens for durability in industrial environments
• Secure mounting via a flange and clamp system for easy adjustment against the flame

Specifications

• Model: QRI2A2.B180B
• Sensing Type: Infrared (IR)
• Illumination: Frontal (Front View)
• Operating Voltage: DC 14 V ±5%
• Power Consumption: < 0.5 W
• Signal Voltage: DC 0…5 V
• Cable Length: 180 cm (70 inches)
• Connection: 3-core cable with stripped ends and ferrules
• Protection Rating: IP54
• Weight: Approximately 0.45 lbs (0.2 kg) without cable

Applications

• Supervision of gas, oil, and coal flames in industrial and commercial burners
• Optimized for use with Siemens LMV5 and LME7 burner management systems
• Suitable for burners of any capacity in HVAC and boiler systems
• Used in systems requiring continuous or intermittent burner operation
• Ideal for monitoring flames that emit infrared radiation where ultraviolet sensors may not be suitable