Michell Instruments Ltd - a DwyerOmega Brand

Michell CondumaxModel II -Hydrocarbon Dew-Point Analyzer

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On-Line Dew-Point Analysis in Natural Gas. The Condumax II hydrocarbon and water dew-point analyzer provides continuous, automatic measurements of these two critical parameters of natural gas quality. It uses the ‘Dark Spot’ direct chilled-mirror technique to measure hydrocarbon dew point with high accuracy and long-term reliability. Water dew point measurements are provided by Michell’s Ceramic Metal-Oxide Moisture Sensor.

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The Condumax II is housed in a compact explosion-proof enclosure. Both indoor and outdoor sampling systems are available as standard providing comprehensive sample conditioning natural gas at up to 138 barg. For specific applications and requirements, we offer a custom engineering design service.

Condumax II is suitable for use with natural gas containing up to 20% hydrogen with no further modification required.

  • Fully automatic on-line analysis
  • Objective, highly repeatable measurements
  • 0.5°C hydrocarbon dew-point accuracy
  • Fundamental chilled mirror principle
  • Patented detection technique
  • Self-cleaning
  • No purge or cooling gas required
  • Optional water dew-point analysis
  • Modbus RTU
  • IECEx, ATEX, cQPSus and GOST Ex certifications
  • Measuring Technique Dark SpotTM fixed sample analysis.
  • Direct photo-detection of hydrocarbon condensate at hydrocarbon dew-point temperature
  • Sensor Cooling Automatic via 3-stage Peltier effect electronic cooler under adaptive control
  • Maximum Range Up to Δ -55K measurement depression from Main Unit operating temperature
  • Accuracy ±0.5°C hydrocarbon dew point (single and multiple condensible component analysis)
  • Sample Flow 0.03m³/hr (0.5 Nl/min) - alarm standard
  • Measurement Frequency 6 cycles/hour (recommended)
  • 12 cycles/hour (maximum)
Suitable Applications
  • Natural gas processing
  • Gas quality measurements at custody transfer
  • Transmission pipeline monitoring
  • Confirmation and control of fuel gas ‘superheat’ to turbine power plant