QRA53.G17 Siemens Sensor

Overview

The Siemens QRA53.G17 is a high-sensitivity ultraviolet (UV) flame detector designed for the continuous supervision of gas flames, yellow or blue-burning oil flames, and ignition spark proving. Engineered for industrial environments, this self-checking sensor ensures high-level safety by providing reliable flame detection for high-demand burner cycles. It is specifically designed to work in conjunction with Siemens burner controls, such as the LGK16 and LGI16 series, and features a durable die-cast aluminum housing suitable for demanding applications.

Features

• Designed for continuous operation with integrated self-supervision for enhanced safety
• High-sensitivity UV cell provides rapid and accurate detection of various fuel flames
• NEMA 4 and IP65 rated housing offers protection against water, dust, and corrosion
• Integrated stepper motor and shutter system facilitate periodic self-testing of the UV cell
• Equipped with a 1-inch mounting coupling and facilities for cooling air connection
• Durable die-cast aluminum construction with a quartz-glass window to protect against dirt

Specifications

• Model: QRA53.G17
• Power Supply: AC 100 V to 110 V (50/60 Hz)
• Detector Tube Length: 125 mm
• Sensitivity: High
• Protection Rating: IP65 / NEMA 4
• Operating Temperature: -20 C to +60 C
• Weight: Approximately 1.58 lbs (0.717 kg)
• Replacement Part: Uses AGR4 502 4065 0 spare UV tube

Applications

• Supervision of gas and oil flames in industrial and commercial burner systems
• Continuous or high-demand burner operations requiring self-checking safety protocols
• Use with Siemens LGK16 or LGI16 burner control systems
• Ignition spark proving for gas-fired equipment and industrial ovens
• Suitable for harsh environments including boiler rooms, chemical processing plants, and HVAC systems