The Rosemount 965 Flame Detector uses Multi-Spectrum Infrared Flame Detection with QuadSense technology to accurately analyze the multi-spectral signals of hydrocarbon gas or liquid fires using four infrared (IR) sensors. Its ability to differentiate flame sources from non-flame background radiation offers high immunity to false alarms for fires up to 150 ft (45 m) from the device. Five selectable sensitivity levels help you customize settings for your specific application .

The detector analyzes four infrared bands between 4 μm and 5 μm. Typical detection response time is less than 5 seconds. The horizontal field of view is 100°, and vertical field of view is 95° (at 50% of maximum distance). Sensitivity ranges include 9.8ft, 32.8ft, 65.6ft, 98.4ft, and 147.6ft, selectable based on application requirements .

The 965 features an internal log event recorder for data logging and is factory calibrated for life, eliminating the need for field calibration. It operates in temperatures from -40 to 158°F (-40 to 70°C) and offers HART communication and RS-485 Modbus compatibility for integration into control systems. Wiring is simplified with 9 terminals and a single cable conduit .

The detector comes with a two-year warranty and is designed for use in industrial, storage, manufacturing, processing and other sensitive locations to help comply with NFPA fire detection standards .