Honeywell – 377-444401-100 FS20X Flame Detector
Discontinued by Honeywell — we can still source the original 377-444401-100 (new, used or refurbished, subject to availability). Request a quote below.
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Quick facts
| Availability | Confirmed on request |
| Category | Honeywell Fire Detectors & Manual Call Points |
| Lifecycle | Discontinued |
| Warranty | 12-month (new) · 3-month (used/refurbished) |
Shipping & availability
Can I still buy the 377-444401-100 now that it is discontinued?
Yes. Honeywell has discontinued the 377-444401-100, but sourcing discontinued parts is what PartnerPLC specialises in — new old stock, used and refurbished units. Request a quote and we'll confirm availability, condition and lead time.
When can 377-444401-100 be shipped?
377-444401-100 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.
Can I pick up 377-444401-100 in person?
Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.
Is express delivery available?
Yes — mention it when you request a quote for 377-444401-100 and we'll include express shipping options in our reply.
My factory is down and I need this urgently — can you help?
For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for 377-444401-100, subject to availability and destination.
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.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 approvedBenefits:
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.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 immunityQuick 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
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Honeywell Honeywell, Honeywell, Notifier 377-444401-100 — UV + IR flame detector hydrocarbon and non-hydrocarbon fires. Discontinued by Honeywell — no longer in the current range. PartnerPLC sources new, surplus and discontinued Honeywell parts — request a quote for price, condition and lead time.
Specifications
Product
| Lifecycle | Discontinued by Honeywell |
| Brand line | Honeywell, Honeywell, Notifier |
Overview
| Brand | Honeywell, Honeywell, Notifier |
| Warranty | 3 Years from Date of Shipment |
Features
| Sub-Category | Flame Detectors, Flame Detectors |
| Alarm Included | Yes |
| Features | Arc Welding Immunity |
| Relay Included | Yes |
| Warnings & Restrictions | Do Not Use Silicone-Based or Commercial Window Cleaning Products, These will Degrade the Model FS20X Detector Performance, Warning: Potential Electrostatic Charge and Wipe Enclosure Only with a Damp Cloth |
| Wireless Technology | WideBand IR™ |
| Visual Indicators | Green LED: Power, Red LED: Alarm, Yellow: Fault |
| Vibration | Meets or Exceeds MIL Spec 810C Method 514.2, Curve AW12 |
Dimensions & Weight
| Mounting Hole Diameter | 0.25 |
Technical Specifications
| Output Signal Range | 4 to 20 mA |
| Humidity Range | 5 to 98% RH (Non-Condensing) |
| Altitude Range | 200ft (60m) |
| Analog Output Signal Type | mA |
| Number of Digital Communication Ports | 2 |
| Relay Rated Load | 1A @24V DC |
| Relay Output Configuration | Auxiliary: SPDT (NO/NC), Fault: SPST (NO), Fire Alarm: SPDT (NO/NC) |
| Relay Activation Settings | Relay 1: Fire Alarm, Relay 2: Fault, Relay 3: Auxiliary |
| Sensing Method | IR, UV |
| Maximum Analog Input Resistance | 400 |
| Plug Type | 10 pin for J2 Connector, 6 pin for J1 Connector |
| Output Signal Type | mA |
| Number of Relay Outputs | 3 |
| Mounting | Swivel Bracket Assembly |
| Default Relay Activation | Alarm Relay (Relay 1), Auxiliary Relay V (Relay 2), Fault Relay (Relay 3) |
| Wiring | Shielded: 2.5 sq.mm (14 AWG) to 0.326 sq.mm (22 AWG) |
| Spectral Sensitivity | Near Band IR: 0.7 to 1.1 microns, Ultraviolet: 185 to 260 Nanometers, Visible: 400 to 700 Nanometers, Wide Band IR: 1.1 to 3.5 Microns |
| Sensitivity | Very High, High, Medium, Low |
| Loop Resistance | 50 to 400 Ohms, 50 to 400 Ohms |
| Field of View | 90° Full 100% Core of Vision, ± 45° From On Axis |
| Conduit Entries | (2) 3/4 in NPT |
| Communication | FireBus II, ModBus Protocol, RS485 |
Operating Characteristics
| Minimum Temperature | -40˚C |
| Storage Temperature | -55 to +110°C, -55 to 100°C |
Standards & Certifications
| Certifications - Regional | Global |
| NEMA Rating | NEMA 4, 4X |
| Ingress Protection | IP66 |
Electrical Specifications
| Operating Current | 85 |
| Maximum Operating Current | 83 mA |
| Operating Voltage | 24 VDC |
Material Specifications
| Enclosure Material | 316 Stainless Steel, Copper-Free Powder Coated Aluminum, Copper-Free Powder Coated Aluminum or 316 Stainless Steel |
Applications & Compatibility
| Application | Acetylene Processing and Storage, Aircraft Hangars, Chemical Production, Storage and Loading Facilities, Crude Oil and Gasoline Storage and Tank Farms, Ethanol, Methanol and IPA Production and Storage, Hydrogen Plants and Storage, LNG/LPG Loading and Unloading Facilities, Natural Gas and CNG Plants, Off-Shore Platforms, Oil and Gas Pipelines and Pumping Stations, Paint and Solvent Storage, Refineries and Oil Production Facilities, Turbine/Compressor Enclosures |
Others
| Industry | Aerospace, Energy, Government & Public Sector, Logistics & Warehouses |
Ordering codes
| Part numbers on this product page | 377-444401-100, 40/40-U-212AC, CA-CONNECTOR-10, CA-CONNECTOR-6, FL4000H-1053, FS20X-211-10, FS20X-211-10-6, FS20X-211-21-2, FS20X-211-21-3, FS20X-211-21-4, FS20X-211-21-6, FS20X-211-22-2, FS20X-211-22-3, FS20X-211-22-4, FS20X-211-22-6, FS20X-211-23-3, FS20X-211-23-4, FS20X-211-23-6, FS20X-211-23-8, FS20X-211-24-2, FS20X-211-24-3, FS20X-211-24-4, FS20X-211-24-6, FS20X-211-24-8, FS20X-212-10, FS20X-212-21-2, FS20X-212-21-2-C, FS20X-212-21-4, FS20X-212-22-2, FS20X-212-22-4, FS20X-212-23-3, FS20X-212-23-4, FS20X-212-23-8, FS20X-212-24-3, FS20X-212-24-4, FS20X-212-24-8, FSX-A014 |
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