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RKI Instruments Introduces PPM Methane Range for the M2S Fixed Monitors

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RKI is now offering our Model M2A transmitter with a PPM range for methane detection. The M2A can monitor for 0 to 9,000 ppm methane with a resolution of 20 ppm.

This additional range means the M2A has the ability to monitor in the PPM, % LEL, or
% volume ranges for methane. The M2A PPM Methane transmitter is now available using the order information below.

To confirm if the ppm methane M2A is suitable for a given situation, please discuss your application with TG Technical Services at 816-524-8100

65-2647RK M2A, Methane (CH4) 0-9,000 ppm, sensor/transmitter with j-box



M2A, Methane (CH4) 0-9,000 ppm, sensor/transmitter with j-box,
cCSAus version


CH4 0 - 9,000 PPM Specifications




0 - 9,000 ppm


20 ppm

Alarm 1:

5,000 ppm

Alarm 2:

8,000 ppm

Temperature Range:

-40 - 75ºC

Applications M2A Features
  • Petrochemical Plants
  • Environmental applications
  • Water / Wastewater treatment
  • Pulp & Paper mills
  • Manufacturing facilities
  • Semiconductor plants
  • Chemical plants

  • Operates with or without a controller
  • Direct digital readout with OLED
    cold temperature display
  • LEL, O2, H2S, CO, CO2,
    -100% Vol CH4, and 0-9,000 PPM CH4
    -Toxic Gases include NH3, SO2, HCN,
    and more
  • Infrared sensor for combustibles
    and CO2
  • 4-20 mA & digital Modbus outputs standard
  • 2 fully programmable alarm relays
    & fail relay
  • Non-intrusive calibration via magnetic wand
  • Explosion proof construction
  • Patented water repellent sensor cover
  • User friendly setup, push buttons & OLED
  • Long-life sensors (2+ years typical)