S2 Series Gas Sensor / Transmitter


S2 Series Gas Sensor / Transmitter

The S2 Series Sensor/Transmitter from RKI Instruments is a rugged, explosion‑proof fixed gas detector designed for reliable, long‑life monitoring of common industrial gases. Compact yet tough, it pairs seamlessly with controllers or PLC/DCS systems to keep your facility safe and compliant.
  • Detects LEL (catalytic/IR, H₂‑specific), O₂, CO, H₂S, CO₂, and toxics (NH₃, AsH₃, Cl₂, ClO₂, HCN, SO₂)
  • Explosion‑proof housing (Class I Div 1 Groups B C D) with patented water‑repellent sensor coating
  • Plug‑in sensors—field‑replaceable, tools not required
  • Outdoor‑ready: rugged flame arrestor, splash guards, optional stainless junction box

Technical Specifications

Temperature Range -40°F to 167°F
Gases LEL, H2S, CO, PPM H2, CO2, NH3, AsH3, Cl2, ClO2, HCN, & SO2
Life Expectancy 2 - 3 years with normal service / exposure

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