QRA55 flame detector

|-----------|--------------| | Product Type | UV Flame Detector | | Model | QRA55 | | Detection Principle | Ultraviolet (UV) flame detection | | Application | Industrial Gas and Oil Burner Systems | | Compatible Controllers | Siemens LFL, LFE, LME Series (depending on configuration) | | Spectral Range | Ultraviolet radiation (UV flame sensing) | | Operating Voltage | Supplied by compatible burner controller | | Mounting | Front mounting with viewing window | | Cable Connection | Fixed cable (length varies by version) | | Housing | Industrial-grade metal housing | | Operating Temperature | Suitable for industrial combustion environments | | Protection Class | Industrial design | | Condition | New / OEM |

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Product Overview

The Siemens QRA55 is an ultraviolet (UV) flame detector designed for industrial combustion safety applications.
It detects ultraviolet radiation emitted by a flame and transmits the signal to a compatible burner control unit to ensure safe burner operation.

The QRA55 is widely used in industrial gas-fired and oil-fired burners installed in boilers, furnaces, kilns, and process heating equipment.
It plays a critical role in flame supervision systems by ensuring that fuel supply is maintained only when a valid flame signal is present.

Compared to smaller UV detectors, the QRA55 is typically used in medium to large industrial burner installations where stable and reliable flame monitoring is required.

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Key Features

• Ultraviolet flame detection technology
• Designed for industrial burner safety systems
• Reliable flame supervision for gas and oil burners
• Compatible with Siemens LFL and LME series controllers
• Industrial-grade metal housing
• Stable performance in high-temperature environments
• Suitable for continuous industrial operation

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Packaging & Delivery

• Individual protective industrial carton packaging
• Shock-resistant internal protection
• 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

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Frequently Asked Questions (FAQ)

Q: What is the Siemens QRA55 used for?
A: It is a UV flame detector used for monitoring flame presence in industrial gas and oil burner systems.

Q: How does QRA55 detect flame?
A: It detects ultraviolet radiation emitted during combustion and sends a signal to the burner control unit.

Q: Which controllers are compatible with QRA55?
A: It is typically used with Siemens LFL, LFE, and LME series burner control units depending on system configuration.

Q: What is the difference between QRA53 and QRA55?
A: The models may differ in cable length, housing design, or application range depending on configuration, but both are UV flame detectors.

Q: Can QRA55 be used in industrial boilers?
A: Yes. It is widely used in boilers, furnaces, and other industrial combustion systems.

Q: Do you provide worldwide shipping?
A: Yes. International shipping is available.