The Honeywell FS20X Fire Sentry Detector is the latest generation high technology multiSpectrum (UV/Dual IR/VIS) fire and flame detector, part of the FSX family. Based on the foundation of the highly successful and reliable Fire Sentry SS4 detector, the FS20X represents a quantum leap in integrating Infrared and Ultraviolet sensing technologies. It exhibits faster false-alarm free response to fires over a wider temperature range and with a much longer detection range compared to conventional UV/IR detectors .

The FS20X uses advanced patented algorithms for signal processing and fire analysis. It is designed to alarm to all types of fires in all industrial environmental conditions. If the detector's UV signal is degraded due to heavy smoke or a contaminated lens, the patented WideBand IR™, Near Band IR and Visible sensors will still alarm to fire but at a reduced sensitivity and slower response time .

Dual microprocessors provide a high level of fail-safe operation combined with fast and reliable performance. The Master Microprocessor performs high-speed digital sampling and signal processing calculations; while the slave microprocessor handles various sensor data, performs communications, self-diagnostics and provides interface versatility; and additional memory for storing Event Log and FirePic™ data. The detector has a detection range in excess of 200 feet for a one square-foot Heptane reference fire and has a cone of vision greater in volumetric coverage than most UV/IR detectors .

Applications include refineries, off-shore platforms, turbine enclosures, LNG/LPG facilities, aircraft hangars, hydrogen plants, and chemical facilities. Additional features include built-in RS-485 Modbus, 4-20 mA analog output, alarm/fault relays, automatic self-test, wide operating temperature range, low power consumption, and high RFI/EMI immunity .