FS20X-211 IR/UV AL M25 FM/EN54


Based on the foundation of the highly successful and reliable SS4 detector, the FS20X detector represents a quantum leap in integrating Infrared and Ultraviolet sensing technologies. The FS20X is a multi-spectrum UV/Dual IR/VIS fire and flame detector with a proven UV solar-blind sensor.
The FS20X detector uses advanced algorithms for signal processing and fire and flame analysis to alarm to most fires in all industrial environmental conditions. If the detector’s UV signal is degraded due to heavy smoke or a contaminated lens, the FS20X’s patented WideBand IR™, Near Band IR and Visible sensors will still alarm to fire, albeit at a reduced sensitivity and slower response time.

The FS20X detector has a detection range in excess of 60 m (200 feet) (very high sensitivity setting) for the detection of a 0.1m2 (one square-foot) n-Heptane reference fire and has a field of view with a greater volumetric coverage than most UV/IR detectors.

FS20X - Aluminium, M25, ATEX/IECEx, FM3260, EN54-10.
Advanced UV/Dual IR/VIS Flame Detector for Hazardous Industrial areas.

Visual Indicators:
Green LED: Power; Red LED: Alarm; Yellow LED: Fault

  • Patented WideBand IR™ Infrared combined with Ultraviolet
  • Detection range greater than 60 m (200 feet) to 0.1 m2 (sq. ft.) heptane fire
  • Patented Electronic Frequency Analysis
  • Visible sensor for optimum false alarm rejection
  • Selectable detection sensitivities
  • Solar blind 90° field of view
  • Dual microprocessors for reliable performance
  • Real-time clock for accurate time dating of events
  • FirePic™ — Up to 6 pre-fire event data storage
  • Event log — Up to 200 events with date and time stamp
  • Built-in RS-485 ModBus communication
  • Built-in 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 component protection with
  • plug-in terminations for easy field installation
  • Two M25 conduit entries
  • Low power consumption
  • High RFI and EMI immunity
  • FM hazardous area approved
  • Ex d ATEX /IECEx approved
  • CU-TR approved
  • INMETRO approved
  • Meets SIL 2 requirements
  • Certified to EN54-10:2002
  • FM 3260 performance
  • Detects hydrocarbon and non-hydrocarbon fuel fires in all environmental conditions
  • Wide operating temperature range
  • Arc welding immunity
  • False alarm rejection
  • Minimal maintenance for trouble-free operation
  • PC software and interface module (FSIM) for fault diagnostics real-time graphs (RTGs), and downloading of FirePics™ and event log
  • Suitable for a wide variety of applications

Additional Information
Mounting bracket SM4 and cable glands FSX-25M25 have to be ordered separately.

Field of view 90° Horizontal Cone of vision, ± 45° from on axis
Sensitivity Very high (60m), high (45m), medium (30m) and low (15m) - switch selectable
Response time 3-5 Seconds to 0.1 m2 (1 sq. ft.) n-Heptane fire at 30 m (100 ft.)
3-10 Seconds to 0.1 m2 (1 sq. ft.) n-Heptane fire at 60 m (200 ft.)
Power Consumption 24 Vdc nominal (18-32 Vdc) - regulated
Operating voltage 24 Vdc nominal (18-32 Vdc) - regulated
Output Relays Fire Alarm: SPDT (NO / NC) – De-energised/energized, latching/non-latching
Fault: SPST (NO) – De-energised, latching/non-latching
Auxiliary: SPDT (NO / NC) – De-energised/energised, latching/non-latching
Contacts rating: 1 amp @ 24 Vdc
Analog output 0 - 20 mA stepped - source or sink user selectable
Loop resistance 50 - 400 Ohms
Tempetarure range Operating: -40 to +85ºC (-40 to +185ºF)
Storage: -55 to +110ºC (-67 to +230ºF)
Vibration Meets or exceeds MilSpec 810C Method 514.2, Curve AW12
Wiring 2.5 mm2 (14 AWG) to 0.326 mm2 (22 AWG); shielded cable recommended
Conduit entries Two M25 conduit entries
Dimensions W: 110,4 mm H: 124,2 mm D: 156,4 mm
Housing Copper-free powder coated aluminum or 316 stainless steel
  • SM4 Stainless Steel Swivel mounting assembly for FS24X, and FS20X detectors
  • PSU-12 Universal charger for Test Lamps and Interface Kits. For 110-240 VAC with international plugs
  • TL-2055 IR Test Lamp for testing FSX detectors, explosion proof version. Incl universal charger
  • TL-1055 IR Test Lamp for testing FSX detectors, non-explosion proof version. Incl universal charger
  • SH-001 Sunshield (316 Stainless Steel)
  • FSX-25M25 Cable gland