FS20X Flame Detector

Based on the foundation of the highly successful and reliable SS4 Flame Detector, the FS20X Flame Detector represents a quantum leap in integrating Infrared and Ultraviolet sensing technologies. The FS20X is a Multi-Spectrum and UV/Dual IR/VIS Flame Detector with a proven UV solar-blind sensor. The FS20X 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.

Conventional and older technology UV/IR detectors, using narrow band 4.3 micron IR sensors, will not respond to smoky fires or if the detector lens is contaminated with oil and other substances since both UV and 4.3 micron signals are attenuated, obscured or absorbed by thick smoke or detector lens contaminants. Also, these old technology UV/IR detectors will not alarm to any fire if they are installed behind ordinary window glass.

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 FS20X Flame Detector has a detection range in excess of 200 feet (very high sensitivity setting) for the detection of a one square-foot Heptane reference fire and has a cone of vision greater in volumetric coverage than most UV/IR detectors. This means fewer detectors can be used as compared to other manufacturers’ detectors.
• Patented WideBand IR Infrared combined with Ultraviolet

• Detection range greater than 200 feet to 1 sq. ft. heptane fire

• Patented Electronic Frequency Analysis

• Visible Sensor for optimum false alarm rejection

• Selectable detection sensitivities

• Solar blind 90° full 100% cone-of-vision

• 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

• Widest operating temperature range

• Patented Electronics Module for components protection with plug-in terminations for easy field installation

• Two ¾” NPT OR 25mm conduit entries

• Low power consumption

• High RFI and EMI immunity

• FM approved

• Detects hydrocarbon and non-hydrocarbon fuel fires in all environmental conditions

• Arc welding immunity

• False alarm rejection for all environmental conditions

• 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.
• Refineries and oil production facilities

• Off-Shore platforms

• Turbine/Compressor enclosures

• Acetylene processing and storage

• 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

• Hydrogen plants and storage

• Paint and solvent storage

• Chemical production, storage, and loading facilities

• Power plants

• Silane gas storage
FIELD OF VIEW 90° Horizontal Cone of vision, ± 45° from on axis
SENSITIVITYVery high (60m), high (45m), medium (30m) and low (15m) - switch selectable
RESPONSE TIME3-5 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.)
SPECTRAL SENSITIVITYUltraviolet:185 - 260 nanometers
Visible:400 – 700 nanometers
Near Band IR:0.7 – 1.1 microns
Wide Band IR:1.1 – 3.5 microns
OPERATING VOLTAGE 24 Vdc nominal (18-32 Vdc) - regulated
POWER CONSUMPTIONOperating: 85 mA @ 24 Vdc nominal
ALARM135 mA @ 24 Vdc nominal
HEATER155 mA – additional
Note: Heater will turn on at -17ºC (0ºF)
OUTPUT RELAYSFire Alarm: SPDT (NO / NC) – De-energized/energized, latching/non-latching
Fault: SPST (NO) – De-energized/energized, latching/non-latching
Auxiliary: SPDT (NO / NC) – De-energized/energized, latching/non-latching
Contacts rating:1 amp @ 24 Vdc
ANALOG OUTPUT0 - 20 mA stepped - source or sink user selectable
COMMUNICATIONOne of the following – user selectable:• RS-485, ModBus Protocol
• RS-485, FireBus II
• RS-485 Special (optional)
• HART, Optional plug-in module (not available on EN54-10 units)
Red LED:Alarm
Yellow LED:Fault
TEMPERATURE RANGEOperating:-40 to +85ºC (-40 to +185ºF)
Storage: -55 to +110ºC (-67 to +230ºF)
HUMIDITY RANGE5 to 98% relative humidity, non-condensing
VIBRATIONMeets or exceeds MilSpec 810C Method 514.2, Curve AW12
WIRING2.5 mm2 (14 AWG) to 0.326 mm2 (22 AWG); shielded cable recommended
CONDUIT ENTRIESStandard: Two M25 or two ¾” NPT
ENCLOSURE MATERIALSCopper-free powder coated aluminum or 316 stainless steel
CERTIFICATIONSFM:Class I, Div. 1 & 2, Groups B, C, & D; Class II, Div. 1 & 2, Groups E, F, & G; Class III
ATEX/IECEx:Ex II 2 G Ex db IIC T4 (Ta: -40 to +110°C), T5 (Ta: -40 to +75°C), T6 (Ta: -60 to +60°C), II 2 D Ex tb IIIC T135°C
Ex II 2 G Ex db IIC T4 (Ta: -60 to +110°C), T5 (Ta: -60 to +75°C),
T6 (Ta: -60 to +60°C), II 2 D Ex tb IIIC T135°C
CE:Complies with EN6100-6-4 & EN50130-4
SIL Rating:FMEDA available on request
EN54-10:FS20X certified 1175a/01 (LPCB); CPR 0832-CPR-F0515
SHIPPING WEIGHTAluminum:3.6 lbs (1.6 kg)
Stainless Steel:7 lbs (3.2 kg)
MOUNTINGSwivel bracket assembly - optional
WARRANTYThree years from date of shipping