Honeywell Analytics Series 3000 MK II Fixed Gas Detector S3KUL2

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Improve site-wide safety and efficiency for fixed gas detection and the maintenance of the Honeywell Analytics Series 3000 MK II Fixed Gas Detector. The Series 3000 MK II from Honeywell is a versatile unit, built for easy integration onto your systems and hassle free, downtime-free maintenance. Designed for gas detection in hazardous work environments, the 3000 MK II is intrinsically safe and built to ATEX standards. It can be used with a wide range of plug-and-play gas sensors, which can be hot-swapped without danger, meaning there is no need to shut down the site to perform maintenance and upgrades to the unit. Easy to set up with your existing systems, the unit can be installed on a two-wire circuit with relative ease. The device has large cable openings to enable your installation engineers to work safely without needing to remove their gloves. With low installation costs and increased up time, it‰Ûªs a great choice for chemical plants, pulp and paper factories, wastewater management sites and petrochemical industries. To order, simply pick the sensor you want from the drop-down option menu.

Electrical Connections and Power:

  • 2-wire loop powered
  • 17VDC (+/-10 pct.) to 24VDC max. (24VDC must not be exceeded).
  • 22mA max. over range


  • Material Transmitter: Epoxy painted aluminum alloy LM25
  • Entries 2 x M20 (for ATEX/IECEx Approval) or 2 x 3/4 NPT (for UL approval)

Maximum Dimensions:

  • 164 x 201 x 99mm
  • 6.4 x 7.9 x 3.9 inches


  • IP Rating IP66 (EN 60529), NEMA 4X
  • Certified Operating Temperature: ATEX/IECEX: -20 deg C to +55 deg C (-4 deg F to +131 deg F) UL/c-UL: -40 deg C to +55 deg C (-40 deg F to +131 deg F)
  • Operating Humidity: Continuous 20-90 pct. RH (non-condensing) Intermittent 0-99 pct. RH (non-condensing)
  • Operating Pressure: 90-110kPa
  • Storage Conditions Transmitter: 15 deg C to 30 deg C (59 deg F to 86 deg F) 30-70 pct. RH (non-condensing)

Certification: UL/c-UL Class I, Div 1 & 2, Groups B, C & D; Class II, Div 1, Groups E, F, G; Class II, Div 2, Groups F & G, Class I Zone 1, Group 2B + H2 Hazardous Locations

Safety Standards Met:

  • US (UL)
  • Canadian (c-UL/CSA)
  • International (IECEx)
  • European (ATEX)

ATEX: II 2 (1) G Ex d [ia] IIB+H2 T4 (Tamb -20 deg C to +55 deg C/-4 deg F to +131 deg F) IECEx Ex d [ia] IIB+H2 T4 EN 60079-0, EN 60079-1, EN 60079-11 Approvals CE compliant in accordance with: ATEX Directive 94/9/EC EMC Directive 2004/108/EC EN 50270 Base Unit

Part Number

S3KUL2 - UL/c-UL approved series 3000 MK II transmitter, aluminum LM25 and 2 x 3/4‰Û NPT entries

Weight: 1.7kg (3.75lbs.)

Optional Toxic and Oxygen Smart Sensors:
XNXXSA2SS - Ammonia (NH3) 0-1,000ppm (200 to 1,000ppm, 50ppm)
XNXXSA1SS - Ammonia (NH3) 0-200ppm (50 to 200ppm, 50ppm)
XNXXSC1SS - Carbon monoxide (CO) 0-300ppm (100 to 999ppm, 100ppm)
XNXXSL1SS - Chlorine (Cl2) 0-5.0ppm (5.0 to 20.0ppm, 5.0ppm)
S3KX1SS - Chlorine dioxide (ClO2) 0-1.00ppm
XNXXSG1SS - Hydrogen (H2) 0-1,000ppm
XNXXSG2SS - Hydrogen (H2) 0-10,000ppm
S3KXSR1SS - Hydrogen chloride (HCl) 0-10ppm (10.0 to 20.0ppm, 1.0ppm)
S3KXSY1SS - Hydrogen cyanide (HCN) 0-20.0ppm
XNXXSR1SS - Hydrogen chloride (HCl) 0-10ppm (10.0 to 20.0ppm, 1.0ppm)
XNXXSF1SS - Hydrogen fluoride (HF) 0-12.0ppm
XNXXSH2SS - Hydrogen sulfide (H2S) 0-100ppm (50 to 500ppm, 10ppm)
XNXXSH1SS - Hydrogen sulfide (H2S) 0-15ppm (10 to 50ppm, 1ppm)
XNXXSN1SS - Nitrogen dioxide (NO2) 0-10.0ppm (5.0 to 50.0ppm, 5.0ppm)
XNXXSM1SS - Nitrogen monoxide (NO) 0-100ppm
XNXXSO1SS - Oxygen (O2) 0-25 pct. vol
XNXXSP1SS - Phosphine (PH3) 0-1.2ppm
XNXXSS1SS - Sulfur dioxide (SO2) 0-15.0ppm (5.0 to 20.0ppm, 5.0ppm)

Additional Details:

5.00 LBS
10.00 (in)
8.00 (in)
13.50 (in)