FIREYE 45UV5-1101-1: Precision UV Flame Detection for Diverse Combustion Systems

The FIREYE 45UV5-1101-1 is a self-checking ultraviolet (UV) flame scanner designed to accurately detect the presence or absence of UV-emitting fossil fuel flames. Operating as a crucial component in industrial burner management systems, this scanner ensures safety and operational integrity across a range of single and multi-burner applications, including boilers, process ovens, and heaters.

Application Scenarios:

Consider a large industrial bakery where a series of highly efficient gas-fired ovens are in constant operation. Maintaining consistent and safe combustion is critical not only for product quality but also to prevent the build-up of uncombusted gas, which could lead to a hazardous explosion. The traditional method of relying on human operators to visually confirm flame presence is unreliable and introduces unacceptable risks in such a continuous production environment.

The FIREYE 45UV5-1101-1 self-checking UV flame scanner is perfectly suited for this application. Installed at each burner, the 45UV5-1101-1 continuously monitors the UV radiation from the pilot and main flames. Its integrated self-checking mechanism, which utilizes an internal shutter, periodically verifies that the UV tube and the associated circuitry are functioning correctly. This continuous internal diagnostic process eliminates the possibility of an undetected scanner failure, which could otherwise lead to a dangerous false “flame on” signal. In the event of a legitimate flame loss or a scanner malfunction, the 45UV5-1101-1 quickly sends a signal to the Fireye burner management system, initiating a safe shutdown sequence and preventing the accumulation of unburnt fuel. This provides the bakery with reliable, automated flame supervision, enhancing safety for personnel and equipment, and ensuring uninterrupted, high-quality production.

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Technical Principles and Innovative Values:

The FIREYE 45UV5-1101-1 incorporates proven and innovative technologies to deliver superior flame detection.

• UV-Eye Detector Technology: At its core, the 45UV5-1101-1 utilizes a sealed, gas-filled UV-sensitive tube. This detector precisely responds to the high-energy UV radiation (specifically in the 2200-2600 Angstrom range) characteristic of fossil fuel flames. When struck by sufficient UV energy, the gas becomes conductive, producing electrical pulses. The frequency of these pulses directly correlates to flame intensity, providing an accurate and reliable indication of flame presence.
• Integrated Self-Checking Shutter Mechanism: A key differentiating feature, the 45UV5-1101-1 includes an electromagnetic shutter that periodically interrupts the UV detector’s view of the flame. During these brief intervals, the associated Fireye control system verifies the proper operation of the UV tube and the entire flame signal circuit. This continuous self-diagnostic capability is paramount for safety, ensuring that any internal failure of the scanner is immediately identified, preventing a dangerous undetected “flame on” condition and maximizing system integrity.
• High Sensitivity with Quartz Lens: The 45UV5-1101-1 incorporates a planoconvex quartz lens. This design enances the scanner’s sensitivity by optimizing the collection of UV radiation, allowing for effective flame detection even when the scanner is positioned further away from the flame. This provides greater flexibility in installation and optimal performance in diverse burner configurations.
• Robust and Easy-Access Housing: Encased in a durable die-cast aluminum housing, the 45UV5-1101-1 is built to withstand harsh industrial environments. The design also features a hinged mount and a double screw-and-keyhole slot arrangement, allowing for quick and easy removal of the scanner housing for lens cleaning and maintenance, which contributes to long-term reliability and reduced service time.

Application Cases and Industry Value:

In a municipal waste incinerator facility, continuous and safe combustion is vital for waste reduction and energy generation. The existing flame detection system suffered from frequent false alarms due to background radiation and lacked the continuous self-checking required by stringent environmental and safety regulations. This led to costly unscheduled shutdowns and increased operational expenditure.

The facility upgraded its burner management system with the installation of FIREYE 45UV5-1101-1 self-checking UV flame scanners on each incinerator burner. The inherent self-checking capability of the 45UV5-1101-1 eliminated false flame indications by constantly verifying its own operational integrity. This meant that operators could rely on the flame signal with absolute confidence, leading to a significant reduction in nuisance trips and associated downtime. The precise UV detection minimized interference from hot refractory or other non-flame sources, ensuring that only actual flame presence was detected. This strategic deployment of the 45UV5-1101-1 enhanced the overall automation levels of the incineration process, drastically improved operational efficiency, and, most importantly, bolstered production safety by providing unwavering flame supervision in a challenging environment. The facility reported a notable increase in throughput and a decrease in maintenance interventions.

Related Product Combination Solutions:

The FIREYE 45UV5-1101-1 is often part of a comprehensive Fireye flame safeguard system, working synergistically with other components.

• FIREYE BurnerLogix YB110/YB230 Series: These advanced burner management systems are designed to seamlessly integrate with the 45UV5-1101-1, providing the control logic for safe startup, operation, and shutdown based on the scanner’s flame signal.
• FIREYE Flame-Monitor (E110, E300, etc.): These modular flame safeguard controls process the flame signal from the 45UV5-1101-1, initiating safety actions and managing burner operation.
• FIREYE 4-314-1 UV Tube Assembly: This is the specific replaceable UV-sensitive tube component within the 45UV5-1101-1, crucial for its detection capabilities and allowing for easy field replacement to extend scanner life.
• FIREYE 61-2914 Shutter Mechanism: This component is the replaceable electromagnetic shutter assembly that facilitates the self-checking function of the 45UV5-1101-1, ensuring continuous reliability.
• FIREYE 38-54 Flame Signal Meter: This portable diagnostic tool is used during commissioning and troubleshooting of the 45UV5-1101-1, providing a direct readout of flame signal strength for optimal scanner sighting and performance verification.
• FIREYE Purge Air Accessories (e.g., sight pipes with purge fittings): Essential for maintaining the cleanliness of the 45UV5-1101-1‘s optical path, these accessories ensure consistent performance in dusty or high-particulate environments.

Installation, Maintenance, and Full-Cycle Support:

The FIREYE 45UV5-1101-1 is designed for efficient installation and robust long-term operation. Proper scanner sighting is critical; it should be aimed to view the most reliable part of the flame (typically the base of the pilot and main flame), taking into account burner secondary air rotation and any potential obstructions within the sight path. The 1″ BSP threaded connection allows for secure mounting into a sight pipe. Adequate purge air (4 SCFM at 3/8″ NPT inlet) is essential to keep the quartz lens clear of contaminants like soot or ash, ensuring uninterrupted and accurate flame detection, particularly in challenging combustion environments. Wiring must adhere to Fireye specifications and local electrical codes to prevent electrical noise interference.