Request Information
The RKI 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, Div 1 Groups B, C, D). An optional non-explosion proof version is available for oxygen, H2S, CO, and CO2 in Class 1 Div 2. LEL sensors are available using catalytic bead and infrared technologies.
Unit of Measure

Brands

 N/A RKI Instruments

Gas Detected

 N/A Ammonia (NH3) Arsine (AsH3) Carbon Dioxide (CO2) Infrared (IR) Carbon Monoxide (CO) Chlorine (Cl2) Chlorine Dioxide (ClO2) Hydrocarbons (HC ) Infrared (IR) Hydrogen (H2) Parts per Minute (PPM) Hydrogen Cyanide (HCN) Hydrogen Sulfide (H2S) Lower Explosive Limit (LEL) General Purpose Lower Explosive Limit (LEL) Hydrogen (H2) Specific Methane (CH4) Infrared (IR) Oxygen (O2) Phosphine (PH3) Sulfur Dioxide (SO2)

Sensors

 N/A Catalytic Electrochemical (EC) Galvanic Cell Infrared (IR) Metal Oxide Semiconductor

Housing J-Box

 N/A Cast Aluminum, Explosion-Proof

Housing Sensors

 N/A Plastic or Aluminum

Output Signal

 N/A 4 to 20 mA

Approvals

 N/A CUnderwriter Laboratories (UL) US Canadian Standards Association (CSA) Canadian Standards Association (CSA) NRTL Underwriter Laboratories (UL)

Controllers

 N/A Compatible with the following controllers: Beacon 110, Beacon 200, Beacon 410A, and 800, also PLC and DCS systems

Material Warranty

 N/A 1 year

Workmanship Warranty

 N/A 1 year

Available Accessories

 N/A AC Power Supply Calibration Adapters Calibration Kits Data Loggers Flow Through Adapters Remote Horns and Lights Remote Mount Calibration Adapters Splash Guards

Package Type

 N/A Each

Units Per Package

 N/A 1

Location

 N/A Indoor Class I, Div. 2

Non-Condensing Relative Humidity

 N/A 0 to 99 %

Zero Controls

 N/A Sets transmitter output to 4 mA with zero output from sensor

Span Controls

 N/A Sets transmitter output to 20 mA with full scale output from sensor

Direct Interface with Beacon 110 / 200 / 410A / 800 Controllers

 N/A Number of Wires to Controller
3

Maximum Distance to Controller (18 AWG wire)
2500 ft

Maximum Distance to Controller (16 AWG wire)
5000 ft

Maximum Distance to Controller (14 AWG wire)
8000 ft

N/A

  • Available gases include
    • LEL, H2S, CO, PPM H2, and CO2
    • Toxic gases include NH3, AsH3, Cl2, ClO2, HCN, & SO2
  • Infrared sensor for combustibles and CO2
  • Hydrogen-Specific now available
  • Patented water repellent sensor coating
  • 4-20 mA output
  • Explosion proof construction
  • Optional stainless steel junction box

N/A 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. Sensors available for NH3, AsH3, Cl2, ClO2, HCN, PH3, and SO2.

The S2 transmitters can be used either indoors or outdoors. The flame arrestors for the explosion-proof versions utilize 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.
All of the S2 transmitters are designed to interface with RKI controllers, or with PLC/DCS systems.