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S3KUL3 Honeywell Analytics Series 3000 MkIII IS Fixed Gas Monitor
Honeywell Analytics Series 3000 MkIII 2 wire fixed gas monitor for toxic gases S3KUL3

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Base Price: $1,390.25

Availability: Usually Ships in 6 to 8 Weeks

Series 3000 Sensor Options*:


Honeywell Analytics Series 3000 MkIII IS Fixed Point Gas Monitor

Series 3000 MkIII Intrinsicaly Safe, toxic and oxygen transmitter, Aluminum LM25

Series 3000 MkIII is suited to a wide range of field applications and can detect toxic gases or Oxygen in a 2-wire 4-20mA format. This wiring configuration makes the Series 3000 MkIII ideal for retrofitting older 2-wire devices. A combination of hazardous area approvals ensures that Series 3000 MkIII can be wired alongside other Intrinsically Safe devices and still permit the ‘hot swap’ of a sensor, without the need to down-power the device or use a hot work permit. This type of certification approval also removes the need to segregate field wiring as required when IS (Intrinsic Safety) and Non IS field instruments are used in the same area, making the device both cost-effective and versatile. Series 3000 MkIII also utilizes a magnetically activated user interface, permitting configuration and calibration without opening the enclosure or having to obtain a hot work permit.

Series 3000 MkIII offers excellent reliability and ease of use with smart gas sensors which configure automatically when plugged into the transmitter. On board diagnostics provide a wealth of useful information during operation and fault finding routines. In addition, the patented ‘Reflex’ sensors test algorithms to ensure sensing elements are fitted and operational at all times. For extra flexibility, the remote sensor can be mounted up to 15m (50 feet) away from the transmitter making the Series 3000 MkIII the ideal choice for applications where the point of detection is located in a hard-to-reach area, e.g. in high or low level concealed areas or inside a room with the transmitter located outside.

The gas sensors available for the Series 3000 MkIII include Oxygen, Carbon Monoxide, Hydrogen Sulphide, Chlorine, Sulfur Dioxide, Chlorine Dioxide, Nitrogen Monoxide, Nitrogen Dioxide, Hydrogen, Hydrogen Fluoride, Ammonia and Phosphine. Further releases will include Hydrogen Chloride, Hydrogen Cyanide and Ozone. Series 3000 MkIII is ATEX, IECEx, UL and c-UL certified.

• Toxic and oxygen versions available
• New and retrofit applications
• Suitable for indoor or outdoor use
• Aluminum alloy explosion-proof housing
• IP66 as standard

Proven and Reliable Sensor Technology

• Surecel electrochemical sensors
• Poison immune infrared sensors
• For use with a separate suitable IS barrier for Zone 0 applications
• Long life sensors


UL/c-UL Class I, Div 1 & 2, Groups A, B, C & D; Class II, Div 1 & 2, Groups E, F, G
ATEX: II 1 (1) GD Ex [ia] IIC T4 Ga Ex ia IIIC T135°C Da
IECEx Ex ia IIC T4 Ga Ex ia IIIC T135°C Da

Easy to Use

• User friendly and intuitive tri-color backlit display with digits, bar graph and icons
• Fully configurable via magnetic switches
• Optional remote sensor mounting
• Selectable sink or source 4-20mA output
• Auto-inhibit during maintenance

Cost Effective

• Common transmitter platform
• Minimal training required
• Reduced spares
• Non-intrusive, one-man operation
• Plug-in sensor replacement

Simple Installation

• Plug-in display module removes to give access to terminal area
• Integral mounting bracket
• ¾” NPT cable/conduit entries
• Removable plug/socket type terminal blocks for ease of wiring
• Sink/source switch to suit preferred wiring topology

Range of Optional Accessories

• Remote sensor mounting kit
• Remote sensor gassing kit
• Duct mounting kit
• Calibration gas flow housing
• Collecting cone


• Industrial manufacturing facilities
• Power plants
• Waste water facilities
• Utilities
• Food and beverage production
• Refineries and chemical plants
• Onshore oil and gas terminals
• Production platforms
• Exploration and drilling

Rugged and reliable gas detector for the protection of personnel from toxic and oxygen gas hazards. Suitable for use in Zone 1 or 2 hazardous areas and North American Class I and II Division 1 or 2 areas.
Input Voltage Range
17 to 24VDC (24VDC nominal)
Recommended Cable
2 wire with shield (90% coverage) or conduit; 0.5mm (20AWG) to 2.0mm (14AWG)
0-100%FSD 4-20mA; Fault = 3mA; Calibration due selectable off or 3mAMax. over range 22mA; Inhibit (toxic sensors) = Selectable 3mA or 4mA Inhibit; (Oxygen sensors) = Selectable 3mA or 17.4mA

Housing: Epoxy painted aluminium alloy LM25
Sensor: 316 stainless steel
Weight (approx)
Aluminium Alloy LM25: 3.75lbs
Integral mounting plate with 4 x mounting holes suitable for M8 bolts. Optional pipe mounting kit for horizontal or vertical pipe Ø1.5 to 3" (2" nominal)
Cable Entries
UL\cUL versions: 2 x ¾"NPT conduit entries. Suitable blanking plug supplied for use if only 1 entry used. Seal to maintain IP rating

IP Rating
IP66 in accordance with EN60529:1992, NEMA 4X
Certified Temperature Range
59°F to 86°F (15°C to 30°C)

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