Potter Electric Signal Co. Us STN-10 Sampling Tube 10 Ft

Product Description

The POTTER ELECTRIC SIGNAL CO. US STN-10 is a 10-foot sampling tube designed for use with duct-mounted smoke detectors. Sampling tubes extend into the airstream inside HVAC ductwork and draw air across the detector's sensing chamber, allowing the detector to monitor airborne combustion particles moving through the duct. This component is sold individually and is a direct accessory for compatible duct detector housings. Licensed fire alarm or HVAC technicians typically install these tubes as part of a complete duct smoke detection assembly during new installation or service replacement.

The STN-10 is intended for duct smoke detector applications in commercial and light commercial HVAC systems where air-sampling detection is required by code. It is commonly installed in supply or return air ducts on air handling units to comply with fire and life safety requirements. The tube spans 10 feet in length, making it suitable for medium to large duct cross-sections where adequate air sampling coverage is needed across the duct width.

Key Features

• 10-foot length provides sampling coverage for medium to large duct widths
• Designed as an accessory component for compatible duct smoke detector housings
• Sold as an individual unit for targeted replacement or new installation
• Draws duct airstream air across the detector sensing chamber for continuous monitoring

Compatibility

Designed for use with compatible duct smoke detector housings in the DDA product family. Confirm housing model compatibility before installation. No additional specific model numbers were provided in the product data.

Installation Notes

Installation should be performed by a licensed fire alarm technician or qualified HVAC technician in accordance with NFPA 72 and local fire and building codes. Shut down the air handling unit and de-energize the associated fire alarm control panel circuits before servicing the duct detector assembly. Ensure the sampling tube is properly seated and secured in the detector housing inlet port before restoring power. Do not operate the duct detector without the sampling tube properly installed, as this will compromise detection performance.