
Siemens Combustion QRA2(1) UV Detector
The Siemens Combustion QRA2(1) UV Detector is a high-performance ultraviolet flame sensor designed specifically for the supervision of gas and oil flames in industrial and commercial burner systems. Engineered for intermittent operation, this normal sensitivity detector utilizes a side-viewing photodiode to monitor UV radiation in the 190 to 270 nm spectral range. The QRA2(1) features a specialized metallized plastic housing that effectively prevents static charging from fan air flow, ensuring consistent signal integrity during critical ignition spark proving sequences. This model comes factory-equipped with a securing flange and clamp, facilitating direct, secure mounting to the burner. Compatible with a broad range of Siemens burner controls—including the LME, LFL, LMV, and LGB series—this UV flame detector is a standard-issue component for contractors maintaining complex combustion equipment. Capable of supervising both yellow and blue-burning oil flames, the QRA2(1) provides precise flame safeguarding and reliable signal transmission for HVACR burner maintenance and OEM applications.
Key Benefits for the Technician- Broad Compatibility: Seamlessly integrates with Siemens burner controls such as the LME21, LMV5, and LFL series for streamlined field replacement.
- Static Protection: The metallized housing mitigates interference from high-velocity burner fans, protecting the flame signal from electrical noise.
- Ready for Install: Includes the essential securing flange and clamp, reducing the need for separate hardware orders during installation.
- Versatile Supervision: Reliably detects UV radiation from gas burners, oil-fired systems, and ignition sparks, ensuring comprehensive combustion monitoring.
- Can this be used for continuous burner operation? No, the QRA2(1) is rated for intermittent operation only. For continuous processes, a self-checking detector like the QRA5 series is typically required.
- How do I test the signal strength in the field? Use a micro-ammeter (DC) with an internal resistance of ? 5000 ? connected across the appropriate adapter to verify the required detector current for your specific controller.
- Does it work with "green" fuel blends? Yes, the Siemens UV detector is capable of monitoring flames from renewable liquid energy carriers and hydrogen-enriched fuel blends.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Siemens Combustion QRA2(1) UV Detector
The Siemens Combustion QRA2(1) UV Detector is a high-performance ultraviolet flame sensor designed specifically for the supervision of gas and oil flames in industrial and commercial burner systems. Engineered for intermittent operation, this normal sensitivity detector utilizes a side-viewing photodiode to monitor UV radiation in the 190 to 270 nm spectral range. The QRA2(1) features a specialized metallized plastic housing that effectively prevents static charging from fan air flow, ensuring consistent signal integrity during critical ignition spark proving sequences. This model comes factory-equipped with a securing flange and clamp, facilitating direct, secure mounting to the burner. Compatible with a broad range of Siemens burner controls—including the LME, LFL, LMV, and LGB series—this UV flame detector is a standard-issue component for contractors maintaining complex combustion equipment. Capable of supervising both yellow and blue-burning oil flames, the QRA2(1) provides precise flame safeguarding and reliable signal transmission for HVACR burner maintenance and OEM applications.
Key Benefits for the Technician- Broad Compatibility: Seamlessly integrates with Siemens burner controls such as the LME21, LMV5, and LFL series for streamlined field replacement.
- Static Protection: The metallized housing mitigates interference from high-velocity burner fans, protecting the flame signal from electrical noise.
- Ready for Install: Includes the essential securing flange and clamp, reducing the need for separate hardware orders during installation.
- Versatile Supervision: Reliably detects UV radiation from gas burners, oil-fired systems, and ignition sparks, ensuring comprehensive combustion monitoring.
- Can this be used for continuous burner operation? No, the QRA2(1) is rated for intermittent operation only. For continuous processes, a self-checking detector like the QRA5 series is typically required.
- How do I test the signal strength in the field? Use a micro-ammeter (DC) with an internal resistance of ? 5000 ? connected across the appropriate adapter to verify the required detector current for your specific controller.
- Does it work with "green" fuel blends? Yes, the Siemens UV detector is capable of monitoring flames from renewable liquid energy carriers and hydrogen-enriched fuel blends.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Siemens Combustion QRA2(1) UV Detector is a high-performance ultraviolet flame sensor designed specifically for the supervision of gas and oil flames in industrial and commercial burner systems. Engineered for intermittent operation, this normal sensitivity detector utilizes a side-viewing photodiode to monitor UV radiation in the 190 to 270 nm spectral range. The QRA2(1) features a specialized metallized plastic housing that effectively prevents static charging from fan air flow, ensuring consistent signal integrity during critical ignition spark proving sequences. This model comes factory-equipped with a securing flange and clamp, facilitating direct, secure mounting to the burner. Compatible with a broad range of Siemens burner controls—including the LME, LFL, LMV, and LGB series—this UV flame detector is a standard-issue component for contractors maintaining complex combustion equipment. Capable of supervising both yellow and blue-burning oil flames, the QRA2(1) provides precise flame safeguarding and reliable signal transmission for HVACR burner maintenance and OEM applications.
Key Benefits for the Technician- Broad Compatibility: Seamlessly integrates with Siemens burner controls such as the LME21, LMV5, and LFL series for streamlined field replacement.
- Static Protection: The metallized housing mitigates interference from high-velocity burner fans, protecting the flame signal from electrical noise.
- Ready for Install: Includes the essential securing flange and clamp, reducing the need for separate hardware orders during installation.
- Versatile Supervision: Reliably detects UV radiation from gas burners, oil-fired systems, and ignition sparks, ensuring comprehensive combustion monitoring.
- Can this be used for continuous burner operation? No, the QRA2(1) is rated for intermittent operation only. For continuous processes, a self-checking detector like the QRA5 series is typically required.
- How do I test the signal strength in the field? Use a micro-ammeter (DC) with an internal resistance of ? 5000 ? connected across the appropriate adapter to verify the required detector current for your specific controller.
- Does it work with "green" fuel blends? Yes, the Siemens UV detector is capable of monitoring flames from renewable liquid energy carriers and hydrogen-enriched fuel blends.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












