The Sensitive and Efficient Flame Scanner FIREYE 45UV5-1006 is Widely Used in Industrial Control.

The FIREYE 45UV5-1006 is a UV self-check flame scanner designed for reliable flame detection on industrial burners firing a wide range of fossil fuels. It belongs to the 45UV5 family, a series used worldwide on boilers, process heaters and ovens where continuous flame supervision and automatic safety shutdown are mandatory.

Unlike simple UV sensors, the 45UV5-1006 incorporates an internal self-check mechanism and a UV “eye” tube. This combination helps ensure that the device not only sees the flame, but also continuously verifies that its own sensing circuit is healthy. The result is a fail-safe flame monitoring solution for single-burner applications using Fireye Flame-Monitor™, BurnerLogix™, MicroM and related safeguard controls.

Key Technical Data (Summary Table)

This table is a practical entry point for engineers preparing datasheets, quotations or online product listings.

Working Principle – UV “Eye” with Built-In Self-Check

At the heart of the 45UV5-1006 is a sealed UV detector tube. The tube is filled with gas and contains two electrodes connected to an AC source. When a flame that emits UV radiation in the 2200–2600 Å region is in view, high-energy photons strike the electrodes. That UV energy causes electrons to be released and the gas between the electrodes becomes conductive. Current flows in short, rapid bursts – a process often described as an avalanche discharge.

The associated Fireye control interprets this pulsed current as a valid flame signal. There are several important consequences:

• The scanner is inherently selective to real flames, because ordinary hot surfaces mainly emit infrared, not strong UV in the narrow band to which the tube responds.

• The tube has no response to visible or infrared light, which helps avoid nuisance pickup from hot refractories, glowing tubes or ambient illumination.

Beyond the basic UV tube, the 45UV5-1006 incorporates a self-checking mechanism. The control periodically forces the scanner to prove that the sensing chain is alive (for example by an internal shutter or modulation scheme, depending on model and control). If the UV channel fails the self-check, the associated Fireye control trips to lockout. This concept is central to modern burner safety standards and helps prevent situations where a failed sensor keeps indicating flame when there is none.

Compatibility and System Integration

The 45UV5-1006 does not operate as a stand-alone device; it is explicitly engineered to work with Fireye flame safeguard systems such as:

• Flame-Monitor™

• BurnerLogix™

• MicroM

• Selected P-Series controls

• D-Series amplifiers such as 72DUVS1 (and related drive circuits like 61-5745-3)

In practice, the scanner is wired to the UV input of the flame amplifier. The amplifier provides:

• Proper excitation for the UV tube

• Amplification and shaping of the flame signal

• Self-check timing and supervision logic

By pairing the 45UV5-1006 with the correct amplifier and programmer module, you can build a complete flame safeguard system with:

• Pre-purge and post-purge

• Ignition sequencing

• Flame proving during trial for ignition

• Continuous flame monitoring during run

• Automatic lockout on loss of signal or self-check failure

This architecture simplifies compliance with many national and international burner safety codes.

Typical Applications

The FIREYE 45UV5-1006 is intended for single-burner systems that use fossil fuels where UV emission is present. Example applications include:

• Industrial and commercial steam or hot-water boilers

• Process heaters in refineries and petrochemical plants

• Ovens and dryers for food, paper, metals and minerals

• Combustion systems on FPSOs, FLNG units and HVAC plants (via the 45UV5 series in general)

Because the scanner is UV-only and immune to visible/IR light, it is particularly useful in:

• High-temperature furnaces where refractory surfaces glow red-hot

• Situations where multiple burners or hot objects are in the field of view but only the actual flame should be recognized

• Installations where external light sources might otherwise create false flame indications

The self-check function makes the 45UV5-1006 suitable for continuous-duty installations, where the burner stays in operation for long periods and standards require automatic checking of the flame detector.

Mechanical Construction and Purge Air

The scanner body is made from cast aluminum, giving a good balance of mechanical strength, corrosion resistance and weight.

Some key mechanical aspects:

• 1" NPT mounting makes it easy to attach to a flame observation port or a threaded sight pipe.

• An 8 ft (2.4 m) lead is supplied for electrical connection to the control panel, reducing junction-box work in many layouts.

• The optical design has roughly a 1 inch per foot field of view, so a 1" diameter spot at 1 ft becomes about 6" at 6 ft. This helps engineers align the scanner accurately on the flame root.gned to work with purge air. Typical requirements are about 4 SCFM (≈113 L/min) through the threaded housing inlet or Wye fitting, with the possibility of increasing to around 15 SCFM in hot or dirty conditions.

Using properly filtered air purge:

• Extends lens and tube life

• Reduces maintenance intervals

• Helps maintain a strong, stable flame signal over time

Benefits for System Designers and Maintenance Teams

When you select FIREYE 45UV5-1006 for a burner project, you are really buying a combination of features that target safety, reliability and maintainability:

1. Fail-safe self-check
   The internal self-check, enforced by Fireye flame safeguard controls, ensures that the scanner cannot “freeze” in a healthy state. A failed sensor becomes a detected fault, not a hidden hazard.

2. Selective UV detection
   Narrow-band UV response and immunity to visible/infrared light minimize false flame signals from hot walls, igniters and external lighting.

3. Wide fuel coverage
   The 45UV5 series is specified for natural gas, light and heavy gaseous fuels, and a range of liquid fuels from kerosene to diesel.

4. Proven platform
   The 45UV5 line has been supported for years across many industries, and documentation, wiring examples and application diagrams are available directly from Fireye.

5. Straightforward replacement and retrofit
   Since 45UV5 scanners are widely stocked by distributors and online industrial suppliers, sourcing the 45UV5-1006 as a drop-in replacement is usually straightforward.

Typical Listing Text Suggestions (for Online Catalogs)

To make your own listing more visible in search engines, you can embed keywords naturally. For example:

• “Fireye 45UV5-1006 UV self-check flame scanner for natural gas and oil burners”

• “1 inch NPT UV flame detector, 8 ft lead, compatible with Fireye Flame-Monitor, BurnerLogix and MicroM controls”

• “Industrial UV flame monitor for boilers, ovens and process heaters, with purge air connection and cast-aluminum housing”

Including the specification table above plus clear headings like Features, Applications, Technical Data and Compatible Controllers will generally help search indexing and make the page easier for engineers to scan.

Conclusion

The FIREYE 45UV5-1006 is a robust, UV-based self-check flame scanner aimed at serious industrial combustion systems. With its 1" NPT mounting, 8 ft lead, UV-only response, and integration with Fireye flame safeguard controls, it offers a practical combination of safety, selectivity and installability for single-burner boilers, heaters and ovens running on a wide range of fossil fuels.