1-866-4 JJSTECH(1-866-455-7832)

Honeywell Analytics FS24X QuadBand™ IR3+ Fire and Flame Detector, 316 Stainless Steel Encl. (2) 25mm entries FM & ATEX approved - FS24X-911-24-1

Item #:
Honeywell Analytics
Honeywell Analytics FS24X QuadBand™ IR3+ Fire and Flame Detector, 316 Stainless Steel Encl. (2) 25mm entries FM & ATEX approved - FS24X-911-24-1
Send This Page to a Friend

Ask an Expert

Our tech experts are ready to help!

1-866-4 JJSTECH (1-866-455-7832)

Email Us
Share this product:
Honeywell Analytics FS24X QuadBand™ IR3+ Fire and Flame Detector, 316 Stainless Steel Encl. (2) 25mm entries FM & ATEX approved - FS24X-911-24-1

Honeywell Analytics FS24X QuadBand™ IR3+ Fire and Flame Detector, 316 Stainless Steel Encl. (2) 25mm entries FM & ATEX approved -...


FS24X-911-24-1 FS24X QuadBand™ IR3+ Fire and Flame Detector, 316 Stainless Steel Encl. (2) 25mm entries FM & ATEX approved by Honeywell Analytics

Fire Sentry FS24X is a quantum leap in flame 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) 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 detection. Sophisticated software algorithms and dual microprocessors ensure that the Fire Sentry FS24X has the highest flame detection performance combined with optimal false alarm rejection.

The WideBand IR™ Infrared technology using high-speed solid-state Quantum sensors allows 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 albeit 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 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.


  • Patented* WideBand IR™ technology
  • Patented* Electronic Frequency Analysis™
  • Visible sensor for optimum false alarm rejection
  • Selectable detection sensitivities
  • Field-of-View: 110° cone-of-vision (90° 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
  • Patented* Electronics Module for components protection with easy plug-in terminations and field installation
  • Two 3/4" NPT conduit entries
  • Low power consumption
  • High RFI and EMI immunity
  • FM, ATEX, CE mark approvals
  • CU-TR approved
  • INMETRO approved
  • Meets SIL 2 requirements
  • Certified to EN54-10:2002 (FS24X-9) option
  • FM 3260 Performance


  • Detects hydrocarbon and non-hydrocarbon fuel fires in all environmental conditions
  • User selectable outputs
  • Wide operating temperature range
  • Optimal false alarm rejection
  • 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


  • Refineries and oil production facilities
  • Off-Shore platforms
  • Turbine/Compressor enclosures
  • Oil and gas pipelines and pumping stations
  • LNG/LPG loading and unloading facilities
  • Natural Gas and CNG plants
  • Ethanol, Methanol, and IPA production and storage
  • Crude oil and gasoline storage and tank farms
  • Aircraft hangars
  • Paint and solvent storage
  • Chemical production, storage, and loading facilities
  • Power plants
FIELD OF VIEW FS24X-9: 90° cone of vision, ± 45° from on axis
FS24X-2: 110° cone of vision, ± 55° from on axis
SENSITIVITY Very high (200 ft.), high (150 ft.), medium (100 ft.) and low (50 ft.) - switch selectable
RESPONSE TIME 3-5 seconds to 1 sq. ft. n-Heptane fire at 30 m (100 ft.)
3-10 seconds to (1 sq. ft. n-Heptane fire at 60 m (200 ft.)
SPECTRAL SENSITIVITY Visible: 400 - 700 nanometres
Near Band IR: 0.7 - 1.1 microns
Wide Band IR: 1.1 - 3.0 microns
Wide Band IR: 3.0 - 5.0 microns
OPERATING VOLTAGE 24 Vdc nominal (18-32 Vdc) - regulated
POWER CONSUMPTION Operating: 56 mA @ 24 Vdc nominal
Alarm: 106 mA @ 24 Vdc nominal
Heater: 155 mA - additional
Note: Heater will turn on at 0°F (-17°C
OUTPUT RELAYS Fire Alarm: SPDT (NO / NC) - De-energized/energized, latching/non-latching
Fault: SPST (NO) - De-energized, latching/non-latching
Auxiliary: SPDT (NO / NC) - De-energized/energized, latching/non-latching
Contacts rating: 1 amp @ 24 Vdc
ANALOG OUTPUT 0 - 20 mA stepped - source or sink user selectable
COMMUNICATION One of the following - user selectable:
• RS-485, ModBus Protocol
• RS-485, FireBus II
• HART, Optional plug-in module (not available on EN54-10 units)
Red LED: Alarm
Yellow LED: Fault
Field of View FS24X: -40°F to +185°F (-40°C to +85°C); 90°
Field of View FS24X: -60°C to +85°C (-76°F to +185°F)
Storage: -67°F to +230°F (-55°C to +110°C)
HUMIDITY RANGE 5 to 98% relative humidity, non-condensing
VIBRATION Meets or exceeds MilSpec 810C Method 514.2, Curve AW12
WIRING 14 AWG to 22 AWG; shielded cable recommended
CONDUIT ENTRIES Standard: Two M25 or two 3/4" NPT
ENCLOSURE MATERIALS Copper-free powder coated aluminum or 316 stainless steel
SHIPPING WEIGHT Aluminum: 1.6 kg (3.6 lbs)
Stainless Steel: 3.2 kg (7 lbs)
MOUNTING Swivel bracket assembly - optional
WARRANTY Three years from date of shipping

Questions & Answers

There are no questions or answers for this item.