or Siemens Qra4. U Flame Detector with High Sensitivity Photocell for Gas Burner Accessories

• Usage: Hydrogen, Nitrogen, Ng and LPG
• Purpose: Control Gas
• Parts: Flame Detector
• Application Fields: Industrial Gas Burner
• Noise Level: Ultra Quiet
• Machine Size: Small
• Model NO.: QRA4. U
• Condition: New
• Certification: ISO, CE
• Model: Qra4.U
• Brand: Siemens
• Name: Flame Detector
• Material: Metal
• Color: Gold and Black
• Deliver Time: 2-3 Days
• Term of Payment: EXW/Fob
• Use: Gas Burner Accessories
• After Warranty Service: Video Technical Support
• Function: Detect Ultraviolet
• Transport Package: Carton
• Specification: 15*11*6CM
• Trademark: Siemens
• Origin: Germany
• HS Code: 8403900000
• Production Capacity: 2000

Product Description

OR Siemens QRA4.U Flame Detector With High Sensitivity Photocell For Gas Burner Accessories 

 

Detector Basic Data	Average UV unit life	approx. 10´000 hours at max. +50 °C; higher The ambient temperature reduces the corresponding life of the unit
	Protection class	IP 54(Install must confirm it)
	Installation location	Optional
	Weight	about 180g
	Allowable combustion chamber pressure	Max 150 mbar
Environmental Conditions	Shipping	IEC 721-3-2
	Climatic Conditions	class 2K3
	Mechanical Condition	class 2M2
	Temperature Range	-20...+60 °C
	Humidity	< 95 % r.h.
	Run	IEC 721-3-3
	Climatic Conditions	class 3K5
	Mechanical Condition	class 3M5
	Temperature Range	-20...+60 °C
	Humidity	< 95 % r.h.

Summary:

Flame detectors are used with combustion controllers from Siemens Building Technologies for monitoring of gas and oil flames.

The QRA4.U flame detector is especially suitable for OEMs integrating it into their products.

Use: Flame detectors are used to monitor gas flames, yellow or blue fuel combustion flames, and calibration of ignition sparks.

OR Siemens QRA4.U Flame Detector With High Sensitivity Photocell For Gas Burner Accessories 

 

Service Precautions

• Before replacing the flame detector, make sure that the wiring is properly connected. • KF8832 service pack is for short-term use only

Warning notice To avoid personal injury, property damage and environmental damage, the following warning notices must be observed! Do not open, interfere with or modify the flame detector! • All activities (installation, assembly and service work, etc.) are to be carried out by professionals • Fully isolate the equipment from mains (all two stages disconnected) before making any wiring changes in the detector's connection area. • Provide adequate protection to connection terminals from electrical shock. • Check to make sure the wiring is properly connected. • Halogen lamps, welding equipment, special lamps, or ignition sparks may generate enough radiation to cause the detector's UV Unit is lit. X-rays and gamma rays can also cause false flame signals. • A fall or impact can affect the safety function. Such detector units do not work, even though they appear to be No damage at all. Installation Precautions • Ensure compliance with relevant national security rules Installation Guide • Controller unit and other cables must be installed separately from high voltage ignition cables Electrical connections for flame detectors To exclude interference, it is important to avoid losses in signal transmission: • Do not run detector cables with other cables - Line capacitance reduces the level of the flame signal - Use a separate cable • Observe the permissible length of the detector cable (refer to Technical Data)

OR Siemens QRA4.U Flame Detector With High Sensitivity Photocell For Gas Burner Accessories