Honeywell FS20X Multi-Spectrum Flame Detector

The FS20X is a Multi-Spectrum (UV/IR/VIS) Flame Detector with a UV solar-blind sensor, providing fast response without false alarms across a broad temperature range. It is designed for hydrocarbon and non-hydrocarbon fuel fires in all environmental conditions. If the UV signal is impaired by smoke or lens dirt, the sensitivity is reduced, but the unit will still alarm.

The FS20X operates across a temperature range of -40° to 85°C and is available with Copper-Free Aluminium or 316 Stainless Steel housing. Kit versions include a HART module.

Features

• Detection Range: Greater than 60 m (200 feet) to 0.1 m² (1 sq. ft.) heptane fire
• Real-time clock with data logging for up to 200 events with historical time and date data
• Optical path and electrical self-testing
• Visual Indicators: Green indicates power, red indicates alarm, and yellow indicates fault
• Sensitivity: Very high (60m), high (45m), medium (30m), and low (15m) – switch selectable
• Analogue Output: 0–20 mA, stepped-source or sink, user-selectable
• Output Relays: Alarm, Fault and Fire
• Dual Microprocessors: One handles samples and signals, while the other handles data, diagnostics, and storage
• FirePic: Up to 6 pre-fire event data storage
• Two ¾” NPT or 25mm conduit entries
• Power: 24 VDC with low power consumption
• Enclosure: IP66
• Approvals: FM, cFM, ATEX, IECEx, EN54-10 and SIL 2 compliant

Communication

One of the following communication options can be selected:

• RS-485, ModBus Protocol
• RS-485, FireBus II
• RS-485 Special (optional)
• HART, optional plug-in module (not available on EN54-10 units)

This series replaces the SS4-A2, SS4-AS2 and SS2-AM models.

Order Information

Note: An SM4 Stainless Steel Swivel mounting assembly must be ordered with each flame detector.

• FS20X-211-21-2: Copper-Free Aluminum Enclosure, (2) ¾” NPT entries, FM, cFM for Class I, Division 1, Groups A, B, C, D; Class II, Div 1, Groups E, F, G; Class III
• FS20X-211-22-2: Stainless Steel Enclosure, (2) ¾” NPT entries, FM, cFM for Class I, Division 1, Groups A, B, C, D; Class II, Division 1, Groups E, F, G; Class III
• FS20X-211-23-3: Copper-Free Aluminum Enclosure, (2) M25 entries, FM, cFM, ATEX, IECEx for Class I, Zone 1
• FS20X-211-24-3: Stainless Steel Enclosure, (2) M25 entries, FM, cFM, ATEX, IECEx for Class I, Zone 1
• FS20X-211-21-6: Copper-Free Aluminum Enclosure, (2) ¾” NPT entries, FM, cFM for Class I, Division 1, Groups A, B, C, D; Class II, Div 1, Groups E, F, G; Class III
• FS20X-211-22-6: Stainless Steel Enclosure, (2) ¾” NPT entries, FM, cFM for Class I, Division 1, Groups A, B, C, D; Class II, Div 1, Groups E, F, G; Class III
• FS20X-211-23-6: Copper-Free Aluminum Enclosure, (2) M25 entries, FM, cFM, ATEX, IECEx for Class I, Zone 1
• FS20X-211-24-6: Stainless Steel Enclosure, (2) M25 entries, FM, cFM, ATEX, IECEx for Class I, Zone 1
• FS20X-211-23-8: Copper-Free Aluminum Enclosure, (2) M25 entries, CU-TR approval, T5, operating temperature -60° to 75°C
• FS20X-211-24-8: Stainless Steel Enclosure, (2) M25 entries, CU-TR approval, T5, operating temperature -60° to 75°C

* Supplied with EN54-10 certification.

Kit Versions

• FS20X-212-21-2: Copper-Free Aluminum Enclosure, (2) ¾” NPT entries, FM, cFM for Class I, Div 1, Groups A, B, C, D; Class II, Div 1, Groups E, F, G
• FS20X-212-22-2: Stainless Steel Enclosure, (2) ¾” NPT entries, FM, cFM for Class I, Division 1, Groups A, B, C, D; Class II, Div 1, Groups E, F, G
• FS20X-212-23-3: Copper-Free Aluminum Enclosure, (2) M25 entries, FM, cFM, ATEX, IECEx for Class I, Zone 1 with HART
• FS20X-212-24-3: Stainless Steel Enclosure, (2) M25 entries, FM, cFM, ATEX, IECEx for Class I, Zone 1 with HART
• FS20X-212-23-8: Copper-Free Aluminum Enclosure, (2) M25 entries, CU-TR approval, T5, operating temperature -60° to 75°C, with HART
• FS20X-212-24-8: Stainless Steel Enclosure, (2) M25 entries, CU-TR approval, T5, operating temperature -60° to 75°C, with HART

* Class III with HART.

Accessories

• FSX-A014: Optional HART Module for FS20X Detectors
• SM4: Stainless Steel Swivel Mounting Assembly for FS24X, FS20X, SS4 and SS2 detectors
• PSU-12: Universal charger for Fire Sentry Test Lamps and Interface Kits, for 110-240 VAC with international plugs
• TL-2055: IR Test Lamp for testing FSX detectors, explosion-proof version. Includes universal charger
• TL-1055: IR Test Lamp for testing FSX detectors, non-explosion-proof version. Includes universal charger
• SH-001: Sunshield for SS2, SS4 & FS24X Detectors, 316 Stainless Steel
• FSX-A001: FSX Interface Kit with Interface Module, RS485 Cable, USB Cable, Power Adapter and Windows PC Software
• FSX-A002: FSX Interface Module with RS485 Cable

Spare Parts

• FS20X-211-10: Replacement Electronics Module for FS20X Detectors. Module only, Standard Temperature Range
• FS20X-211-10-6: Replacement Electronics Module for FS20X Detectors. Module only, Standard Temperature Range, EN54-10
• FS20X-212-10: Electronics Module with HART Communication
• FSX-A006: Replacement IR Bulb for TL1055 and TL2055