FS24X Plus Flame Detector

Overview

Elevate your gas detectors’ potential with Honeywell's expert maintenance services! Maximize uptime, eliminate costs, and ensure on-time, on-budget project completion.

Key features

Fast response to a wide range of hydrocarbon and hydrogen fires even in low visibility conditions
Advanced diagnostics including window clarity to maintain site protection Easy to Use
Sunshade and standard or marine mounting bracket included for quickly and easily positioning the detector in an optimal location.
Powerful FlameManager software replaces legacy dip switches for detector configuration and provides simplified diagnostics and post event FirePics™.

Applications

Confined space entry
Oil, gas and petrochemical
Wastewater and sewage
Steel and chemical plants

Standards and certification

EN 54-10

IEC61508

ATEX

IECEX

Supplier: ISO 9001:2015 certified

PRODUCT DATASHEETDoc. SSLS/DS/GD-021 · Rev. 01 · 13-Oct-2026

FS24X Plus Flame Detector – technical data

Technical specifications

Brand	Honeywell
Weight range	Aluminum: 1.7 kg (3.7 lbs) / Stainless Steel: 3.4 kg (7.4 lbs)
Humidity Range	0 to 99% RH / 0–99% relative humidity
Analog Output Signal Type	4-20mA standard
Number of Analog Outputs	1
Analog Outputs	4 to 20 mA
Connector Type	2 x M25 or 2 x ¾” NPT Entries
Digital Communication Ports	HART® with Handheld Communicator or Hardwired / RS485: Modbus and FP2 / USB: FP2
Relay Rated Load	2A at 32 VDC
Relay Output Configuration	Alarm, Fault, and Auxiliary: SPDT1 (NO2/NC3), De-Energized/Energized, Latching/Non-Latching Rating: 2A @32 VDC
Relay Activation Settings	Single Pole Double Throw (SPDT)
Sensing Method	Triple IR
Response Time	5 sec and a max of 10 sec (FM Witnessed) / Typically, 5 Seconds and a maximum of 10 Seconds
Number of Relay Outputs	3
Sensitivity	High 150 ft (45m) / Low 50 ft (15m) / Medium 100 ft (30m) / Very High 200 ft (60m) to 1 ft2 (0.1 m2)
Field of View	120° Cone of Vision (50% on Axis Range) / 90° Cone of vision
Conduit Entries	(2) 3/4 in NPT
Minimum Temperature	-55°C
Storage Temperature	-55 to +85°C
Certifications - Performance	EN54-10: Class1 (Medium, High, Very High Sensitivities), Class 2 (Low Sensitivity) / FM3260
Certifications - Other	IEC61508 SIL 2 Certified by TUV Sud / Maritime Type approved to ABS, Lloyds, BV, DNV

PRODUCT DATASHEETDoc. SSLS/DS/GD-021 · Rev. 01 · 13-Oct-2026

FS24X Plus Flame Detector – technical data, continued

Technical specifications

Certifications - Hazloc	ATEX: II 2 G Ex db IIC T5 Gb; II 2 D Ex tb IIIC T135° C Db IP66/67 / CCC / CU-TR / IECEx: Ex db IIC T5 Gb; Ex tb IIIC T135° C Db IP66/67 / INMETRO / cFMus: Class I, Div 1, Grps A,B,C,D; Class II/III, Div 1, Grps E,F,G NEMA 4X
NEMA Rating	Type 4X
Ingress Protection	IP66/67 (Type 4X)
Datalogging	5000 events and ten 30-second FirePics™
Relay Included	Yes
Visual Indicators	LED halo light ring - Green, Yellow, Red
Replacement Parts	FS24XP-PUCK
Material	316 Stainless Steel / Low Copper Aluminum with Marine Grade Paint
Enclosure Material	316 Stainless Steel / Low Copper Aluminum with Marine Grade Paint
Operating Current	1.8 Watts (Nominal) / 12 Watts (max) = with heater ON 100% duty cycle. / 2.4 Watts (Alarm)
Standards	EN 54-10, IEC61508, ATEX, IECEX

Ordering information

Brand	Honeywell

Inspection and care

Keep sensors and filters clean, charge batteries as directed and record bump tests and calibrations.

Storage

Store in a cool, dry place away from direct sunlight, heat and chemicals.

Data given in good faith from manufacturer information and subject to change without notice. Select PPE based on a site risk assessment. Scan the code for the product page.