QRI2B2.B180B1 Siemens Flame Detector

Overview

The Siemens QRI2B2.B180B1 is a high-performance infrared (IR) flame detector designed for the supervision of gas, oil, or coal flames that emit infrared light. This self-checking sensor is engineered for continuous or intermittent operation and is specifically designed for lateral (90 degree) light entry, making it an ideal choice for specific burner mounting configurations. It integrates an infrared-sensitive photoresistor and a signal amplifier to provide reliable flame monitoring when used with Siemens burner controls.

Features

• Infrared-sensitive flame detecting element covers a spectral range of approximately 1 to 3 µm
• Integrated flame signal amplifier ensures robust signal processing
• Designed for lateral (90 degree) illumination for side-viewing applications
• Electronic self-supervision allows for use in continuous or intermittent burner operations
• Impact-proof black plastic housing with a dust-tight lens for durability in industrial environments
• High sensitivity requires mounting behind the burner’s baffle plate to prevent detection of extraneous light
• Includes a 180 cm cable with stripped ends, ferrules, flange, and clamp for secure installation

Specifications

• Model: QRI2B2.B180B1
• Sensing Type: Infrared (IR)
• Illumination: Lateral (Side Viewing)
• Operating Voltage: DC 14 V ±5%
• Signal Voltage: DC 0 to 5 V
• Power Consumption: Less than 0.5 W
• Protection Rating: IP54
• Cable Length: 180 cm (approx. 70 inches)
• Weight: Approximately 0.48 lbs (0.22 kg)
• Safety Class: II

Applications

• Supervision of gas, oil, and coal flames in industrial and commercial burner systems
• Compatible with Siemens burner controls, particularly the LMV5 and LME7 series
• Suitable for burners of any capacity in continuous or intermittent operation
• Used in HVAC systems, power plants, and process heating applications requiring precise flame monitoring