QRA4.U


USD 219

    Part Number: QRA4.U

    Manufacturer: Siemens

    Detection Type: Ultraviolet (UV)

    Operating Temperature: -40°C to +80°C (typical range)

    Mounting Position: Flexible, depending on burner setup

    QRA4.U | Siemens | UV Flame Detector

    The Siemens QRA4.U UV Flame Detector is a reliable and high-performance flame monitoring device designed for use with Siemens burner control systems. It provides accurate flame detection using ultraviolet (UV) sensing technology, ensuring safe and efficient combustion in industrial and commercial burner applications.


  • Estimated Lead Time: Usually ships in 1–10 working days

  • Manufacturer: Siemens

  • Product No.: QRA4.U

  • Product Type: Flame Detector

  • Detection Sensitivity: Normal

  • Average Life of UV Cell: Approx. 10,000 hours at max. +50 °C (higher ambient temperatures reduce cell life)

  • Permissible Combustion Chamber Pressure: Max. 150 mbar

  • Degree of Protection: IP54 (ensure proper mounting)

  • Weight: 0.18 kg

  • Shipping Weight: 1.18 kg

High-performance UV flame detection for accurate monitoring Normal sensitivity suitable for standard industrial applications Long-lasting UV cell with ~10,000 hours of life at 50 °C Operates under permissible combustion chamber pressure up to 150 mbar IP54 protection rating ensures dust and water resistance (when mounted properly) Compact and lightweight design (0.18 kg) for easy installation Reliable safety and combustion monitoring for industrial burners