Honeywell FS24X Infrared Flame Detector

FS24X is the latest generation of high-tech multi-spectrum flame detector (IR / IR / IR / Visible). Using advanced WideBand IR™ and WideBand 4.3 micron IR™ detection technology that performs in all weather conditions, the FS24X is a quantum leap in flame detection. Its algorithms, multi-function software and dual microprocessors give the FS24X the highest fire detection performance combined with optimal false alarm immunity.

Technical details:

• Detection time: 3-5 seconds for a 1 sq. ft. n-Heptane fire at 30 m; 3-10 seconds at 60 m
• Sensor sensitivity: 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
• Communication: selectable RS-485 ModBus or RS-485 FireBus II
• Other optional communication: HART (excluded under EN54-10)
• Optional software interface providing graphics, real-time data and retrieval of stored information
• Time and date stamping of events
• Erasable, reprogrammable flash memory
• Power requirement: 24 Vdc
• Operating humidity: 5 to 98% relative humidity, non-condensing
• Operating temperature:

110° field of view FS24X: -40ºC to +85ºC (-40ºF to +185ºF);

90° field of view FS24X: -60°C to +85°C (-76°F to +185°F)

Storage: -55ºC to +110ºC (-67ºF to +230ºF)

• Three-color visual indicator: green for power, red for alarm, yellow for fault
• 0 – 20 mA analog output, user-selectable source
• Alarm, Fault and Fire output relays
• Dual microprocessors for digital sampling and signal processing, data acquisition, communication and FirePic pre-fire event data storage
• Two ¾” NPT or 25 mm conduit entries
• Low power consumption
• RFI and EMI immunity
• Approvals: FM, cFM, IECEx, ATEX, CU-TR, EN54-10, Dash 5 and SIL 2
• Ingress protection: IP66

Versions and configuration

• FS24X-2: 110° field of view (±55° from the axis), operating temperature -40 to +85 °C.
• FS24X-9: 90° field of view (±45°), operating temperature -60 to +85 °C; EN 54-10 certified (LPCB 1175a/02).
• Switch-selectable sensitivity: very high (200 ft), high (150 ft), medium (100 ft) and low (50 ft) for the reference 1 sq. ft. n-heptane fire; response 3-5 s at 30 m and 3-10 s at 60 m.
• Copper-free powder-coated aluminium or 316 stainless steel housing; IP66 and NEMA 4 & 4X; two M25 or 3/4 in. NPT conduit entries.

Outputs and communication

• Relays: fire alarm (SPDT), fault (SPST) and auxiliary (SPDT), 1 A at 24 Vdc.
• 0-20 mA analog output, source or sink selectable; green (power), red (alarm) and yellow (fault) LEDs.
• Communication selectable between RS-485 Modbus and RS-485 FireBus II; optional HART module (not available on EN 54-10 units).
• Power 56 mA operating, 106 mA in alarm at 24 Vdc (plus 155 mA when the heater is on, which switches on at about -17 °C).
• FirePic stores pre-fire data and an event log with time stamps; PC software and the FSIM interface module for diagnostics; a swivel bracket is optional.

Applications and approvals

Applications named by the manufacturer: refineries and oil production facilities, off-shore platforms, turbine/compressor enclosures, oil and gas pipelines and pumping stations, LNG/LPG loading, natural gas/CNG plants, ethanol/methanol/IPA production and storage, crude oil and gasoline tank farms, aircraft hangars, paint and solvent storage, chemical facilities and power plants.

Approvals per the data sheet: FM (Class I Div. 1 & 2, Groups B, C, D and others), ATEX / IECEx (II 2 G Ex db IIC T4/T5/T6), CU-TR, INMETRO, EN 54-10 (FS24X-9), meets SIL 2 requirements (FMEDA available on request).

What to send for a quote

• Field of view version (FS24X-2 or FS24X-9) and housing material (aluminium or 316 stainless steel).
• Fuel type, and the distance and size of the fire to detect.
• Conduit entry type (M25 or NPT) and swivel bracket.
• Signal to the control panel: relay, 0-20 mA, Modbus or FireBus II.
• Hazardous-area approvals required (FM, ATEX, IECEx, EN 54-10) and quantity.

CAD replies with a quote within 24 working hours of receiving the details.