QRA53 UV flame detector - View 1
Siemens

QRA53 UV flame detector

Technical Specifications

ParameterSpecification
Product TypeUV Flame Detector
ModelQRA53
Detection PrincipleUltraviolet (UV) flame detection
ApplicationIndustrial Gas and Oil Burner Systems
Compatible ControllersSiemens LFL, LFE, LME Series (depending on system configuration)
Spectral RangeUltraviolet radiation (flame detection range)
Operating VoltageSupplied by compatible burner controller
MountingFront mounting with viewing window
Cable ConnectionFixed cable (length varies by version)
Operating TemperatureSuitable for industrial combustion environments
HousingIndustrial-grade construction
Protection ClassIndustrial design
ConditionNew / OEM

Notes

Product Overview

The Siemens QRA53 is a UV flame detector designed for monitoring flame presence in industrial gas and oil burner systems.
It detects ultraviolet radiation emitted by a flame and sends a corresponding signal to the burner control unit to ensure safe operation.

The QRA53 is widely used in industrial boilers, furnaces, kilns, and process heating equipment.
It plays a critical role in burner safety by ensuring that fuel is only supplied when a valid flame signal is present.

This UV detector is typically installed together with Siemens burner control units such as the LFL or LME series and is suitable for single or multi-burner installations.


Key Features

  • Ultraviolet flame detection technology
  • Designed for industrial combustion safety applications
  • Reliable flame monitoring for gas and oil burners
  • Compatible with Siemens burner control systems
  • Durable industrial housing
  • Stable performance in high-temperature environments
  • Suitable for continuous industrial operation

Packaging & Delivery

  • Individual protective industrial carton packaging
  • Shock-resistant internal protection materials
  • Standard export packaging for international shipment
  • Fast dispatch for stocked models
  • Shipping via courier, air freight, or sea freight
  • Bulk supply available for OEM and distributor customers

Frequently Asked Questions (FAQ)

Q: What is the Siemens QRA53 used for?
A: It is a UV flame detector used to monitor flame presence in industrial gas and oil burner systems.

Q: How does QRA53 detect flame?
A: It detects ultraviolet radiation emitted by the flame during combustion.

Q: Which controllers are compatible with QRA53?
A: It is typically used with Siemens LFL and LME series burner control units depending on system configuration.

Q: Can QRA53 be used for gas burners?
A: Yes. It is suitable for both gas-fired and oil-fired industrial burner systems.

Q: Is QRA53 required for burner safety?
A: Yes. It is an essential component for flame supervision in burner management systems.

Q: Do you provide international shipping?
A: Yes. Worldwide shipping is available.

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