Honeywell LG1093AA45 LG1093 Series Flame Sensor

Description

Heavy industrial gas turbine installations require high-reliability optical monitoring to ensure safe and continuous combustion. Designed specifically for critical power generation environments, the Honeywell LG1093AA45 is an ultraviolet optical flame sensor engineered for extreme durability. This LG1093 Series sensor serves as a qualified, field-proven component on General Electric (GE) industrial gas turbines, enabling continuous flame verification under intense temperature and pressure conditions. By transmitting light signals across extended distances to compatible amplifiers, it ensures rapid and accurate flameout detection for protective SIS/ESD actions.

Features

• Compatible with multiple system amplifier voltage ratings including 28 VDC, 20 to 35 VDC, and 115 VAC.
• Supports long-distance physical separation of up to 330 meters (1000 feet) between the sensor and amplifier without signal loss.
• High-integrity viewing window rated for system pressures up to 10 bar (150 psi).
• Robust housing featuring a 3/4-inch internal NPT mounting thread for secure turbine interface.
• Equipped with a high-temperature Teflon-shielded cable terminating in a 1-inch external conduit thread for superior physical protection and EMC shielding.

Applications

• General Electric (GE) frame and aeroderivative industrial gas turbines.
• Utility power generation plants and co-generation facilities.
• Refinery burner systems and high-capacity industrial boilers.
• Petrochemical and oil/gas pipeline compression stations.

Technical Specifications

Installation Guidelines

Ensure the turbine is completely shut down and depressurized before installing or replacing the flame sensor. Thread the 3/4-inch internal NPT connection securely onto the viewing port, using appropriate thread sealant for high-temperature and high-pressure turbine applications. Route the integrated Teflon-shielded cable through an approved 1-inch conduit system to protect against physical wear and thermal radiation. To minimize electromagnetic interference, terminate the cable shielding strictly in accordance with Honeywell and OEM grounding diagrams. Periodically inspect the viewing window to confirm it remains free of soot or combustion deposits.

Compliance and Certifications

• CE Mark: Compliant with European Directives EMC 89/336/EEC and LVD 73/23/EEC.
• ATEX Directive: Certified for hazardous explosive atmospheres (94/9/EC) under EEx d IIA T3 or EEx d IIC T3 (Zone 1 and Zone 2).
• Factory Mutual (FM): Approved for explosion-proof applications in Class I, Division 1 and 2, Groups B, C, and D.