Siemens Flame Detector QRI2A2180B

ENERGY COMBUSTION, Ahmadabad supplying all types of Siemens make Flame Sensors. The Siemens QRI2A2.B180B is a high-precision infrared (IR) flame detector designed for use with the LMV5... burner management system. Its defining feature is frontal illumination, meaning the sensor "looks" straight ahead out of the tip of the housing. Full Technical Specifications Feature Specification Detection Type Infrared (IR) Illumination Direction Frontal (Forward-viewing) Spectral Sensitivity Approx. 2 $\mu$m (optimal for gas, oil, and coal flames) Operating Voltage DC 14 V ± 5% Signal Output DC 0 to 5 V Power Consumption Max. 0.5 W Operational Mode Continuous or Intermittent Cable Length 180 cm (approx. 70 inches) Cable End Stripped with ferrules Protection Rating IP54 Housing Material Impact-proof black plastic Operating Temperature -20 °C to +60 °C Weight Approx. 0.175 kg Key Features Electronic Self-Supervision: Because it monitors its own internal circuitry, it is approved for burners in continuous operation (running more than 24 hours without shutdown). Integrated Amplifier: The flame signal is processed and amplified within the detector head itself, ensuring a stable signal transmission to the control unit. Flicker Sensitivity: The sensor is designed to ignore the steady glow from hot refractory bricks. It specifically triggers on the characteristic flicker frequency of an active flame. Sensitivity Positioning: Due to its high sensitivity, it is usually installed behind the burner's baffle plate to avoid oversaturation. Mounting & Accessories The QRI2A2.B180B is typically secured using a flange and clamp system. Standard Accessories: (Often sold separately unless specified as a kit) AGG2.110: Mounting set (includes a flange, clamp, and heat insulator). AGG2.120: Adapter for conduit connection. Mounting Position: Must be aligned so the frontal lens has a clear line of sight to the flame. Comparison: QRI2A vs. QRI2B Feature QRI2A QRI2B Viewing Angle Frontal (Straight) Lateral (90° Side-view) Best For... Long, narrow burner tubes Side-entry viewing ports Cable Length 180 cm (standard) 180 cm (standard) Safety Warning: Infrared sensors can be sensitive to moisture and soot. Ensure the lens is cleaned regularly with a soft, dry cloth. Never use solvents or chemical cleaners, as they can degrade the plastic lens or housing.