The Model M90 is designed to monitor percent level CO2 concentrations in natural gas applications. An infrared, dual-beam technology is incorporated into the design of the instrument. The M90 can be included as an additional measurement with other Envent analyzers, or can be offered as a stand-alone analyzer with an integrated sample conditioning system.
  • Dual-Beam NDIR Technology.
  • Long-term stability.
  • Low power consumption (2 watts).
  • Dual alarm outputs.
  • 4-20 mA output.
  • RS-232 and RS-485 Modbus communications.
  • Two Adjustable set point control relays.
  • Quick delivery.
  • Full service & training.
  • Available with differing sample systems and accessories as required in various applications.
  • The M90 dual-beam infra-red carbon dioxide detection systemcontinuously measures and corrects for the short and long-termconcentration changes that caused measurement errors in first generation (single beam) carbon dioxide sensors.

Application Areas
  • CO2 is measured routinely in natural gas for product quality and process control purposes. Common ranges are from 0-5% for sales gas and up to 0-30% for inlet CO2 concentration.
  • Gas plant Inlet.
  • Certain H2S-removal chemical processes can be fine-tuned by CO2 slipstreaming.
  • Quantify CO2 as a combustion by-product.

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