Protectowire Confirmed Temperature Initiation (CTI) Series Linear Heat Detectors provide the most dependable and cost-effective fire detection option for cold storage applications. Protectowire FireSystems provides the only Digital Linear Heat Detector that offers short circuit discrimination. Unlike conventional linear heat detectors, damage to the CTI Series Linear Heat Detector will not cause a false alarm. The CTI Series uses multi-criteria detection to eliminate false alarms and assures only heat-activated alarms are reported. Most refrigerated and warehousing facilities are double interlocked pre-action systems, which makes the CTI Series an ideal Linear Heat Detector for this particular type of suppression system.
When used in double interlock pre-action sprinkler systems, Protectowire is typically installed at the ceiling and in the racks at every level of sprinkler piping. The detector has been specifically designed for the harsh environment and can protect in temperatures up to -60°F (-51°C), depending upon the model selected. Protectowire Detectors are available in wide variety of alarm temperatures and jackets suitable for any type of installation environment.