SIEMENS QRA4.U PHOTOCELL LAMP

General Description:
The SIEMENS QRA4.U is a UV flame sensor designed to detect flame presence in gas or oil burner systems. It is compatible with Siemens burner controllers such as LME, LGB, and LFL series.

Technical Specifications:

• Flame Detection Type: Ultraviolet (UV)

• Detection Wavelength Range: 190 – 270 nm

• Connection Type: 2-pin plug (QRA4 is plug-in version)

• Operating Voltage: Supplied via burner controller

• Ambient Temperature: -20 °C … +80 °C

• Protection Class: IP40

• Mounting Position: Vertical or horizontal (depending on burner setup)

• Cable Connection: External cable (depending on model)

• Compatible Controllers: LME series, LGB series, LFL series

Applications:

• Industrial and commercial burner systems

• Gas and oil boiler applications

• Flame safety detection setups

Advantages:

• High UV sensitivity

• Reliable flame supervision

• Full compatibility with Siemens controllers

• Easy to mount and wire