Honeywell UV Flame Detector LG1093AA26 – Overview:

General Description:

• Model: LG1093AA26
• Type: UV (Ultraviolet) Flame Detector
• Application: Specifically designed for flame detection in turbine applications, such as those found in power generation, oil & gas, and industrial plants.
• Technology: Uses ultraviolet (UV) light to detect the presence of a flame. These detectors sense the UV radiation emitted by the flame during combustion.

Key Features:

• High Sensitivity: The UV flame detector is highly sensitive to ultraviolet radiation emitted by flames, making it capable of detecting even small flames.
• Reliable Performance: It ensures quick detection of flame presence, which is crucial for turbine systems that require real-time monitoring for safety and operation.
• Corrosion-Resistant Design: The detector is built to withstand harsh environmental conditions, including exposure to high temperatures, humidity, and chemicals, typical in industrial environments.
• Maintenance-Free Operation: Designed for long service life with minimal maintenance requirements, reducing operational downtime.
• Fast Response Time: UV flame detectors provide rapid flame detection compared to other types (such as IR detectors), offering quick response times for fast shutdown or safety action.
• Robust and Reliable: Honeywell UV flame detectors are known for their rugged construction, making them suitable for installation in demanding environments, such as turbine combustion chambers.

Applications:

• Gas Turbine Systems: Detects the presence of flame in gas turbine engines and other combustion systems to ensure safe and efficient operation.
• Industrial Combustion Systems: Suitable for use in boilers, furnaces, incinerators, and other industrial heating equipment where flame detection is critical.
• Power Generation: Commonly used in power plants where turbines are used for electricity generation.
• Oil & Gas: Often installed in oil refineries, gas processing units, and other areas where high-temperature combustion is used.

Specifications:

1. Detection Range:

   • The UV detector is designed to sense the ultraviolet radiation emitted by flames. It is sensitive to a range of UV wavelengths typically in the 180-260 nm range.

2. Output Signal:

   • The detector provides an electrical output signal that indicates the presence of a flame. This signal can be used to trigger alarms, shutdowns, or interlocks in the event of flame loss or abnormal conditions.

3. Operating Voltage:

   • Typically, UV flame detectors like the LG1093AA26 operate on a 24V DC or 110V AC power supply (depending on the specific model configuration).

4. Mounting and Installation:

   • Mounting: Designed for easy installation in turbine applications with the ability to integrate with existing systems.
   • Orientation: The detector needs to be positioned to ensure it can view the flame source within the turbine combustion chamber.

5. Temperature Range:

   • These detectors are typically rated to operate in extreme temperature environments, typically -40°C to +85°C or higher, depending on the configuration.

6. Ingress Protection:

   • The device typically has an IP65 or higher rating, ensuring it is dustproof and water-resistant, ideal for industrial settings.

7. Output Types:

   • Analog Output: For continuous monitoring of flame intensity.
   • Digital Output: Can provide discrete on/off signals for flame detection.

8. Certification:

   • Ex Certification: Flame detectors like the LG1093AA26 may come with ATEX, IECEx, or FM certifications for use in hazardous locations, ensuring compliance with safety standards in industrial and explosive environments.

9. UV Flame Detection Sensitivity:

   • The detector is specifically tuned to detect flames by their unique UV signature, making it capable of identifying flames that emit UV radiation, such as those in gas turbines or combustion engines.

10. Maintenance and Calibration:

    • Requires periodic testing and maintenance to ensure proper functioning, although UV flame detectors typically have fewer moving parts, leading to lower maintenance compared to other flame detection technologies.

Applications and Safety:

• Flame-out Detection: Quickly detects flame-out events in turbines and combustion systems, providing an early warning to prevent potential hazards.
• Explosion Protection: The detector can be integrated into systems that prevent explosions or fire hazards in hazardous areas (using Ex-rated variants).