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Fire Sentry FS20X

Date:2017-10-20     Hits:2164

FS20X Flame Detector

FSX Flame Detectors

Part of the FSX family of electro-optical flame detectors, the FS20X represents a quantum leap in integrating infrared and ultraviolet sensing technologies.
Features & Benefits
Detects hydrocarbon and non-hydrocarbon fuel fires in all environmental conditions
Range greater than 200 feet to 1 sq. ft. heptane fire
Arc welding immunity 
Quick Specs
Field of view: 90° full 100% core of vision, ± 45° from on axis
Operating voltage: 24 VDC nominal (18-32 VDC) - regulated

Sensitivity: Very high, high, medium and low - switch selectable 

Product Overview

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.

The FS20X Flame Detector uses 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 but 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 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.

Additional Features and Benefits
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.

Multi-Spectrum IR & UV/Dual IR/VIS
Flame Detector
General Specifications
Field 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 nominal
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 date of shipping

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