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Biogas Monitoring System (Ei2100)

High performance and cost-effective biogas and RNG monitoring solution

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The Ei2100 Biogas Monitoring System provides cost-effective online monitoring of compliance with Renewable Natural Gas (RNG) interconnection specifications, biomethane monitoring, and feedback to Anaerobic Digestor & Upgrading Process Control Systems.

Biomethane is biogas that has been conditioned or upgraded to comply with natural gas pipeline gas quality specifications.

Designed with flexibility in mind, the system is modular and capable of utilizing an assortment of proven measurement principles and sampling techniques to ensure optimal system configuration. The integrated InteliSense™ control and data acquisition software complete the turnkey solution and provide a simple and intuitive user interface.


Excellent accuracy with fast response

Compliance with Renewable Gas (RG) interconnection tariff specifications, including:

  • Pacific Gas & Electric (PG&E Rule 21)

  • Southern California Gas Company (SoCalGas Rule 30)

  • California Joint Utilities Renewable Gas Interconnection Rule

Multiple technologies available for optimal gas measurement

  • Nondispersive infrared (NDIR)

  • Ultraviolet (UV)

  • Optical (LED)

  • Gas Chromatograph (GC)

  • Gas Chromatograph Ion Mobility Spectrometer (GC-IMS)

  • Electrochemical Gas Sensor

Easy to Operate

  • No analytical specialist needed

  • Automatic calibration (Zero and Span)

  • Automatic correction for interferences

Multiple Communication Options

  • Analog and Digital

  • LAN or Remote Access

Rugged IP65 (NEMA 4X Equivalent) Type Enclosure

  • Temperature controlled

  • Small footprint

  • No building required

  • Suitable for hazardous rated locations

  • Integrated UPS

Available Options


  • Free Standing

  • Wall Mount (Limited to Base Measurements)

Technical Specifications
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Typical Applications
  • Wastewater Treatment Plants

  • Food Waste Digesters (co-digestion)

  • Dairy Farms

  • Hog and Pig Farms

  • Landfills

  • Others

Available Configurations

19" Rack

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Available Measurements

Base Measurements:

Additional Measurements:

  • Ammonia (NH3)

  • Siloxanes

  • Hydrogen (H2)

  • Nitrogen (N2)

  • Moisture (H2O)

  • Microbiologically Influenced Corrosion (MIC)

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Biogas System Flyer

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Application Questionnaire

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Biogas Analysis Services

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