1800 174 536 (1800 1 RIKEN)

S2 Series Diffusion Sensor/Transmitter

The Control Equipment S2 series gas sensor/transmitters are highly reliable and very cost effective for the detection of common gas hazards. The S2 series are available for LEL, H2 Specific (LEL, and ppm), Oxygen, H2S, CO, and for a variety of toxic gases. The transmitters for LEL, H2 Specific, Oxygen, H2S, CO2, and Carbon Monoxide are explosion‐proof with flame arrestors, and approved for use in hazardous areas (Class l, Groups B, C, D). An optional non‐explosion proof version is available for oxygen, H2S, CO, and CO2 in non‐hazardous atmospheres. LEL sensors are available using catalytic bead and infrared technologies.

The toxic sensors are electrochemical type plug‐in sensors, which provide high specificity, fast response, and long life. The plug‐in design allows quick replacement in the field with no tools required. Toxic sensors are designed for use in Class I, Div. 2 hazardous locations. The S2 transmitters can be used either indoors or outdoors. The flame arrestors for the explosion‐proof versions utilise a patented coating which make them water repellent. Splash guards are also available for use in very wet environments. An optional stainless steel junction box is available for corrosive environments.


  • Detection of LEL,H2S,CO,PPM H2, and C02

  • Detection of NH3, S02, HCN , PH3 and ASH3

  • Infrared sensor for combustibles and C02

  • Hydrogen‐Specific now available

  • Patented water repellent sensor coating

  • 4‐20 mA output

  • Explosion proof construction

  • Optional stainless steel enclosure

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