Honeywell Fire Sentry FS24X Flame Detector



  • Patented* WideBand IR™ Technology
  • Patented* Electronic Frequency Analysis™
  • Visible Sensor for optimum false alarm rejection
  • Selectable detection sensitivities
  • Field-of-View: 110° full 100% cone-of-vision (90° full 100% cone-of-vision model also available)
  • Dual microprocessors for reliable performance
  • Real-time clock for accurate time dating of events
  • FirePic™ — pre-fire event data storage
  • Event log with date and time stamp
  • RS-485 ModBus communication
  • Non-Isolated 4-20 mA Analog output (sink or source)
  • Alarm, Fault and Fire Verification relays
  • Automatic optical path and electronic self-test
  • Widest operating temperature range
  • Patented* Electronics Module for components protection with easy plug-in terminations and field installation
  • Two ¾” NPT OR 25mm conduit entries
  • Low power consumption
  • High RFI and EMI immunity
  • FM, ATEX, CE mark approvals
  • Meets SIL 2 requirements


  • Detects hydrocarbon and non-hydrocarbon fuel fires in all environmental conditions
  • User selectable outputs
  • Optimal false alarm rejection for all environmental conditions
  • Minimal maintenance for trouble-free operation
  • PC software and Interface Module (FSIM) for fault diagnostics, real-time graphics (RTGs), and downloading of FirePics™ and event log
  • Suitable for a wide variety of applications
  • Easy electronics module replacement
  • Test lamps for manual testing

Fire Sentry FS24X is a quantum leap in flame and fire detection with its sophisticated software and detection technology.

The Fire Sentry FS24X is the latest generation high technology Multi-Spectrum Triple IR (IR/IR/IR/Visible) Fire and Flame Detector, which is part of our FSX family of advanced technology Electro-Optical fire detectors. Using our patented* WideBand IR™, WideBand 4.3 micron IR™, and Visible detection technology, the Fire Sentry FS24X is a quantum leap in flame and fire detection. Sophisticated software algorithms and dual microprocessors ensure that the Fire Sentry FS24X has the highest fire detection performance combined with optimal false alarm rejection.


  • Refineries and Oil Production Facilities
  • Off-Shore Platforms
  • Turbine/Compressor Enclosures
  • Oil & Gas Pipelines and Pumping Stations
  • LNG/LPG Loading & Unloading Facilities
  • Natural Gas and CNG Plants
  • Ethanol, Methanol, and IPA Production and Storage
  • Crude Oil and Gasoline Storage and Tank Farms
  • Aircraft Hangars
  • Hydrogen Plants and Storage
  • Paint & Solvent Storage
  • Chemical Production, Storage, and Loading Facilities
  • Power Plants

The WideBand IR™ Infrared technology using high-speed solid-state Quantum sensors allows the detection of all types of fires, hydrocarbon and non-hydrocarbon, in all weather conditions. If the detector’s signal is blocked by ordinary window glass, the patented WideBand IR sensors will still alarm to the 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 highspeed 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.Honeywell-Fire-Sentry-FS24X-Flame-Detector-FIG-1

The Fire Sentry FSX family of detectors feature our patented* FirePic data storage and information retrieval facility. FirePic™ records pre-fire data, which can be recovered from the Detector’s non-volatile flash memory for post fire analysis and postulation of the fire cause. Additionally, unique Real-Time Graphing (RTG™) allows viewing of the data which the Detector actually sees. A combination of outputs makes the Fire Sentry FS24X a truly versatile detector for today’s demanding industrial requirements. The Fire Sentry FS24X detector has a detection range greater than 200 feet (Very High Sensitivity setting) for the detection of a one square-foot Heptane reference fire and has a cone of vision far greater in volumetric coverage than any other Multi-Spectrum IR Detector. This means fewer Detectors can be used as compared to other manufacturers’ Detectors.

Honeywell Analytics Lines of Business


Gas detection from standalone units to fully engineered, multi-point systems, all offering cost-effective regulatory compliance

  • Applications: parking structures, chillers, mechanical rooms, office towers, commercial buildings, shopping centers, swimming pools, golf courses, schools and universities, laboratories.

Renowned Sieger and Manning gas detection systems with advanced electrochemical, infrared and open path sensing technologies

  • Applications: oil and gas, cold storage, water/wastewater treatment, chemicals, engine rooms, plastics and fibers, agriculture, printing and light industrial.

Single or multi-gas Lumidor and other premium detectors with compact, lightweight designs ranging from simple alarm-only units to advanced, fully configurable and serviceable instruments

  • Applications: underground utility and electricity ducts, boiler rooms, post-fire sites, sewers, industrial plants, industrial hygiene, first responder teams, and remote fleets.
High Tech/GovernmentHoneywell-Fire-Sentry-FS24X-Flame-Detector-FIG-5

A complete portfolio of gas and chemical detection instrumentation including infrared spectroscopy (MST) with no cross-interference, to Chemcassette paperbased solutions (MDA Scientific) offering detection down to parts per billion

  • Applications: semiconductor manufacturing and nanotechnology, aerospace propulsion and safety, specialty chemicals industry, research laboratories, emergency response.
Technical ServicesHoneywell-Fire-Sentry-FS24X-Flame-Detector-FIG-6

24/7 global network includes post-sales service and Systems Integration teams

  • Emergency call out, service contracts, on/off-site repair, training and commissioning
  • Complete range of spares, consumables and accessories.

Find out more:

Contact Honeywell Analytics


Honeywell Analytics, Inc

  • 405 Barclay Blvd. Lincolnshire, IL 60069 USA
  • Tel: 847.955.8200
  • Toll-free: 800.538.0363
  • Fax: 847.955.8210
  • 23311 La Palma Avenue Yorba Linda, CA 92887 USA
  • Tel: 714.694.2700
  • Fax: 714.694.2701

Technical Services

Europe, Middle East, Africa

  • Life Safety Distribution AG
  • Weiherallee 11a CH-8610 Uster Switzerland
  • Tel: +41 (0)44.943.4300
  • Fax: +41 (0)44.943.4398

Asia Pacific

  • Honeywell Analytics, Asia Pacific
  • #508, Kolon Science Valley (1) 187-10 Guro-Dong, Guro-Gu Seoul, 152-050 Korea
  • Tel: +82 (0)2.2025.0307
  • Fax: +82 (0)2.2025.0329

Fire Sentry Corporation is now part of Honeywell Analytics. As we begin to fully integrate our companies, you might notice some small changes. This integration is about bringing together two of the best in life safety. We are focused on putting our customers first and making the right decisions to guarantee Honeywell Analytics continues to remain the experts in fire and gas safety.

Please Note: While every effort has been made to ensure accuracy in this publication, no responsibility can be accepted for errors or omissions. Data may change, as well as legislation, and you are strongly advised to obtain copies of the most recently issued regulations, standards, and guidelines. This publication is not intended to form the basis of a contract.

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© 2012 Honeywell Analytics

Documents / Resources

Honeywell Fire Sentry FS24X Flame Detector [pdf] Owner's Manual
Fire Sentry FS24X Flame Detector, Fire Sentry FS24X, Fire Sentry, FS24X, FS24X Flame Detector, Flame Detector, Detector


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