Process Moisture Analyzer - Michell Promet I.S

Multi-Channel Moisture Measurement in Process Gases

Key features

  • Simple, cost-efficient operation and low maintenance
  • Immune to chemical attack from H2S, mercaptans and other sulphides
  • Protected against glycol or other liquid contaminants
  • Accurate direct dew-point measurement at process pressure up to 45 MPa (450 barg/6526.7 psig)
  • Moisture range from ambient to ppb level with exhaustive list of hygrometric units, including key parameters of natural gas
  • Three 4...20 mA configurable outputs and digital Modbus RTU-based communication
  • Assured calibration integrity traceable to NPL (UK) and NIST (USA)
  • User programmable or real-time active pressure compensation for moisture content calculation
  • Multi-channel with up to 4 independent measurement channels
  • Customer configurable ES70 sample systems
  • Optional, highly reliable and cost-effective 2-wire, loop-powered O2 transmitter


Promet I.S. Process Moisture Analyzers are heavy duty, industrial hygrometer systems for measurement of high pressure, process gases and vaporized liquids on natural gas platforms and terminals, petrochemical plants and industrial gas manufacturing facilities. Promet I.S. combines Michell’s proven Ceramic Metal-Oxide Moisture Sensor with ES70 sample conditioning systems to provide a reliable and easy to operate, multi-channel on-line instrument for both flammable and non-flammable gases. Optional Oxygen Electrochemical sensors offer additional capability for percentage and ppmV O2 measurements.

Single or multichannel configurations are available. The Control Unit in the multi-channel format can also include moisture in liquid analysis or oxygen measurement function by combining with the Liquidew I.S. Moisture in Liquid Analyzer or the Minox-i O2 transmitter

Suitable for use with natural gas containing up to 20% hydrogen with no further modification required.


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