The Honeywell FGM-3100 is a rugged fixed gas detector for combustible gas monitoring in industrial environments. Its catalytic bead sensor detects 0–100% LEL of gases like methane and propane with ±2% accuracy, triggering 4–20 mA outputs and alarm relays for safety systems. Designed for harsh conditions, it features IP66 protection and ATEX/IECEx certifications for use in hazardous zones. Ideal for leak detection in refineries, pipelines, and confined spaces.