Heavy Duty 18 Inch Air Sample Tube For Duct Smoke Detectors With PCB Mounted Photoelectric Sensor Plays Nice With Kidde Four Wire Systems Handles Up To 4000 Feet Per Minute Flow Built Tough For Everyday Hustle

Industrial 18 Inch Duct Air Sample Tube For Fire Safety Paths
✔️ PCB photoelectric sensor reads air velocities up to 4000 ft/min

This rugged sampling tube hooks straight into standard duct smoke detectors and keeps an eye on indoor ventilation routes in warehouses and office towers. It draws test air from main HVAC trunks to flag rising particulate levels before they spread.

✅ PC board mounted detector chip for steady performance tracking
✅ Shallow casing mounts quickly inside tight mechanical chases
✅ Works smooth with standard four wire control panels
✅ Reliable readouts stay stable through temp swings and shaking

💡 What makes a quality duct smoke detection tube for HVAC systems? A reliable sampling path requires proper airflow management and accurate particle detection. Solid air sampling depends on rigid tubing material and tight flange seals to stop false triggers. Built in drift compensation circuits separate regular lint from actual smoke particles so you get clean signals. Handy upkeep means clearing debris from intake holes every few months and giving wire terminals a quick visual check.

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