The Model 331SDS H2S Analyzer utilizes field proven tape based technology that provides a linear and interference-free output of H2S on two streams simultaneously. An optional Total Sulfur measurement can be added to the analyzer as one of the streams. Certified for Class I, Div 2, Groups A, B, C and D.


  • Fast Response times using Rapid Response Algorithm (RRA)
  • 20 seconds to alarm
  • No interference from other components in the sample
  • Low power consumption < 3 Watts
  • Extended tape life of 60-90 days
  • Measures up to 5 times the calibrated range
  • Quick delivery
  • Full field service & training available

Application Areas

The Model 330SDS measures H2S and/or Total Sulfur in natural gas, petrochemical streams, condensate, liquids, or LPG. Common applications include:

  • Sales Gas
  • Plant Inlet
  • Pipeline Monitoring & Blending
  • H2S Scavenger Systems
  • Wellhead Monitoring
  • Acid Gas
  • Fuel Gas Monitoring
  • Bio Gas

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