Comprehensive Genuine New Flame Scanner FIREYE 45UV5-1007 for Industrial Automation .

The FIREYE 45UV5-1007 is a self-check ultraviolet (UV) flame scanner engineered for continuous, high-demand industrial combustion systems. It is designed to detect UV radiation from fossil fuel flames and to feed a clean, reliable flame signal to compatible FIREYE flame safeguard controls. In modern boiler houses, process heaters, and ovens, the 45UV5-1007 acts as a critical safety component, confirming flame presence, enabling fast flame failure response, and providing built-in self-diagnostics that reduce the risk of undetected faults. 

Compared with simple, non-self-checking UV detectors, the 45UV5-1007 is purpose-built for continuously fired burners where shutdown intervals are long and manual testing is inconvenient. Its integrated shutter mechanism, robust aluminum housing, and wide power supply range make it suitable for retrofits and new installations in demanding industrial environments. 

Key Technical Data – FIREYE 45UV5-1007

Operating Principle of the 45UV5-1007

The FIREYE 45UV5-1007 uses a UV-eye detector tube to sense the unique ultraviolet energy emitted by fossil fuel flames. Inside the detector is a sealed gas-filled envelope with two electrodes connected to an AC voltage source. When UV radiation of sufficient energy strikes the detector, electrons are released, the gas becomes conductive, and a small current pulse flows between the electrodes. This pulse begins and ends abruptly and is described as an “avalanche.” 

A bright, stable flame produces a high frequency of avalanches per second, while a weak flame generates fewer pulses. If the flame disappears entirely, the pulses cease, apart from very rare events such as cosmic-ray interference that the connected control ignores. The associated FIREYE control monitors this pulse train as a representation of flame intensity and uses it to drive its internal flame relay logic. 

Because the detector responds only to a narrow band of UV radiation and not to visible light or infrared heat, the 45UV5-1007 can distinguish true flame presence from background conditions such as glowing refractory, hot metal, or ordinary lighting. This discrimination is essential in multi-burner furnaces and high-temperature chambers where false flame indications would compromise safety.

Self-Checking and Fail-Safe Design

A defining feature of the 45UV5-1007 is its built-in electromagnetic shutter. At regular intervals (approximately every four seconds), the shutter closes to interrupt the optical path between the flame and the UV detector. While the shutter is closed, the detector must stop producing flame pulses; when it reopens, the pulses must return if the burner flame is still present. The connected FIREYE flame safeguard evaluates this pattern to verify that: 

• The UV detector is alive and responding.

• The signal wiring between scanner and control is intact.

• The system is not latched in a false “flame on” condition.

If the expected signal changes do not occur during the shutter cycle, the control interprets this as a scanner or circuit fault and can drive the system to lockout. This continuous on-line testing means the 45UV5-1007 is particularly suitable for burners that operate for long stretches without planned shutdowns, where manual testing of the flame scanner would otherwise be rare.

Mechanical and Electrical Design Features

The mechanical design of the FIREYE 45UV5-1007 supports long service life in demanding combustion environments:

• Cast aluminum enclosure
  The scanner housing is cast aluminum sealed with high-temperature, oil-resistant gaskets. This construction protects the UV tube, transformer, and electronics from dust, moisture, and combustion deposits. 

• Quartz planoconvex lens
  At the front of the scanner, a quartz planoconvex lens concentrates UV radiation onto the detector and offers excellent UV transmission. Its geometry can increase sensitivity several times over basic flat windows, which is helpful on large burners or longer sight paths. 

• 1" BSP mounting
  The unit uses a 1" BSP threaded connection, allowing straightforward mounting on a rigid sight pipe. The hinge and mounting arrangement described in the general 45UV5 documentation permits the housing to be swung away for lens inspection and cleaning without disturbing pipe alignment. 

• Wide input voltage range
  With 102–264 VAC operating range at 50/60 Hz, the 45UV5-1007 can be powered from standard industrial supplies in many regions, easing global standardization for OEMs and end users. 

Typical Applications and Fuel Types

The 45UV5-1007 self-check flame scanner is optimized for fossil fuels that emit strong UV components in the flame. Common fuels include: 

• Natural gas and methane

• Coke oven gas and other high-temperature process gases

• Propane and butane

• Kerosene and light petroleum distillates

• Light fuel oils and diesel fuels

Typical application areas:

• Single-burner industrial or commercial steam boilers

• Process ovens and heat treatment furnaces

• Thermal oil heaters and direct-fired heaters

• Combustion systems using Flame-Monitor, BurnerLogix, MicroM, M-Series, D-Series or related FIREYE platforms 

For steam-atomized heavy oils or pulverized coal, FIREYE generally recommends infrared (IR) scanners instead of UV, due to the different spectral characteristics of those flames. 

Integration and Installation Considerations

To obtain a stable flame signal from the FIREYE 45UV5-1007, attention to installation is essential:

• Correct sighting
  The scanner should view the monitored burner flame at an angle rather than straight down the burner axis. Correct sighting ensures that the scanner “sees” only the intended burner and not neighboring flames or ignition sources. 

• Sight pipe and purge air
  A rigid sight pipe with proper wall penetration and thermal protection is recommended. Purge air, supplied through the dedicated tapping in the housing or the sight pipe, keeps the lens clean by preventing soot, dust, and unburned particles from depositing on the optical surface. High-temperature or dirty-fuel applications may require higher purge air flows as outlined in the data sheet. 

• Compatible controls and wiring practices
  The 45UV5-1007 must be connected only to designated FIREYE controls such as Flame-Monitor, BurnerLogix, MicroM and related models. Using non-sinusoidal power or incompatible amplifiers can result in scanner damage or unreliable flame signals. Proper cable shielding and grounding, as recommended in FIREYE service guides, helps prevent noise induced on the scanner signal wiring.

Benefits of Choosing FIREYE 45UV5-1007

Selecting the FIREYE 45UV5-1007 UV self-check flame scanner brings several advantages to a combustion safety system:

• Continuous, automatic self-checking
  The built-in shutter mechanism enables the control to verify scanner health during every firing period. This reduces reliance on manual tests and helps ensure that latent faults do not remain hidden.

• Fail-safe UV detection
  The scanner and associated control treat loss of pulses or abnormal self-check results as a fault. This fail-safe behavior aligns with modern safety standards for industrial burner management. 

• Proven platform compatibility
  Because the 45UV5-1007 is part of the broader 45UV5 product family, it integrates smoothly with established FIREYE flame safeguard systems widely used in power, petrochemical, and process industries. 

• Robust construction for harsh duty
  The combination of cast aluminum, oil-resistant seals, and quartz optics is engineered for long-term service at burner fronts, where vibration, heat, and contaminants are always present.

Altogether, the FIREYE 45UV5-1007 provides a reliable, self-checking UV flame monitoring solution for industrial users who need a durable scanner with strong diagnostic capability, wide electrical compatibility, and consistent performance on standard fossil-fuel burners.