Honeywell 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.

Multi-Spectrum UV/Dual IR/VIS Fire and Flame Detector

The FS20 detector using advanced patented algorithms for signal processing and fire and flame analysis is designed to alarm to all types of 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.

Key Features of the Honeywell FS20X UV/IR Flame Detector

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

Honeywell FS20X UV/IR Flame Detector Specifications

Features

Specifications

Features

Specifications

ield of View	90° Full 100% Cone of vision, ± 45° from on-axis
Sensitivity	Very High, High, Medium and Low – Switch Selectable
Response Time	3-5 Seconds to 1 sq. ft. n-Heptane fire at 100 ft. 3-10 Seconds to 1 sq. ft. n-Heptane fire at 200 ft.
Spectral Sensitivity	Ultraviolet: 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 Consumption	Operating: 83 mA @ 24 VDC nomina
Alarm	133 mA @ 24 VDC nominal
Heater	155 mA – additional Note: Heater will turn on at 0ºF (-17ºC)
Output Relays	Fire Alarm: SPDT (NO / NC) – De-Energized/Energized, Latching/Non-Latching Fault: SPST (NO) – Normally 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
Loop Resistance	50 – 400 OHMS
Communication	One of the following – User Selectable: RS-485, Modbus Protocol RS-485, FireBus II RS-485 Special (optional) HART, Optional plug-in module
Visual Indications	Blue LED: Power Red LED: Alarm Yellow LED: Fault
Temperature Range	Operating: -40 to +185ºF (-40 to +85ºC) Storage: -67 to +230ºF (-55 to +110ºC)
Humidity Range	5 to 98% relative humidity, non-condensing
Vibration	Meets or exceeds MilSpec 810C Method 514.2, Curve AW12
Wiring	14 AWG (2.5mm2) to 22 AWG (0.326mm2); Shielded Cable Recommended
Conduit Entries	Standard: Two ¾” NPT or two M25
Enclosure Materials	Copper-Free Powder Coated Aluminum or 316 Stainless Steel
Enclosure Type	NEMA 4 & 4X, IP66
Certifications	FM: Class I, Div. 1 & 2, Groups B, C, & D; Class II, Div. 1 & 2, Groups E, F, & G; Class III ATEX: II 2 G D; Ex d IIC T4 (Ta: -40 to +110ºC), T5 (Ta: -40 to +75ºC), T6 (Ta: -40 to +60ºC) CE: Complies with EN6100-6-4 & EN50130-4
Shipping Weight	Aluminum: 3.6 lbs (1.6 kg) Stainless Steel: 7 lbs (3.2 kg)
Mounting	Swivel Bracket Assembly – Optional
Warranty	Three years from the date of shipping

Download FS20X Flame Detector Brochure