Process Controls Corporation - RKI Instruments

The RKI Instruments M2A-XL Stand Alone Transmitter is a fixed gas detection transmitter designed for stand-alone use or integration with a controller, PLC, or DCS.

It supports industrial gas detection applications that require local gas concentration readout, output signals, programmable alarms, and transmitter-based configuration in one field-mounted device.

The M2A-XL is available for combustible gases, oxygen, carbon monoxide, hydrogen sulfide, carbon dioxide, methane, hydrocarbons, and selected toxic gases.

Process Controls Corporation - RKI Instruments M2A-XL Stand Alone Transmitter

It includes a digital OLED display, 4-20 mA and Modbus outputs, alarm relay capability, and magnetic-wand calibration for non-intrusive field adjustment.

Key Characteristics

  • Operates with or without a controller for stand-alone or integrated fixed gas detection system use
  • Direct digital gas concentration readout with OLED display
  • Standard 4-20 mA output and digital Modbus RTU output
  • Two fully programmable alarm relays plus fail relay
  • Non-intrusive calibration using a magnetic wand
  • Available configurations for LEL, O2, H2S, CO, CO2, CH4, hydrocarbons, and selected toxic gases
  • Explosion proof construction for supported configurations

Ideal Applications

  • Oil and Gas: Monitors for explosive methane or hydrogen gas near drilling sites and pipelines.
  • Water & Wastewater: Detects toxic hydrogen sulfide (H₂S) and chlorine (Cl₂) gases that can build up in treatment plants.
  • Chemical & Petrochemical: Tracks dangerous leaks of ammonia (NH₃), carbon monoxide (CO), or carbon dioxide (CO₂) during manufacturing.
  • Semiconductor & Automotive: Protects workers by finding trace toxic gases used to make computer chips or car batteries.

Product Family Includes

  • M2A-XL Stand Alone Transmitter for combustible gas, oxygen, hydrogen sulfide, carbon monoxide, carbon dioxide, methane, and hydrocarbon detection
  • M2A-XL toxic gas transmitter configurations for gases such as NH3, AsH3, Cl2, ClO2, HCN, NO2, PH3, and SO2
  • Configurations with 4-20 mA output, Modbus RTU output, programmable alarm relays, OLED display, and magnetic-wand calibration

Industries Served

  • Petrochemical Plants
  • Refineries
  • Water & Wastewater Treatment Plants
  • Pulp & Paper Mills
  • Manufacturing Facilities
  • Automotive
  • Semiconductor Plants
  • Chemical Plants
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