H2S/TOS TS MEDOR

The H2S/TOS TS MEDOR® is an autoGC-ED (MEDOR® Electrochemical wet cell Detector) for the analysis and monitoring of H2S, TOS and TS by sum of H2S + TOS in natural gas and gaseous fuels.

Different configurations exist depending on the application and concentration range:

• HS2/TOS TS MEDOR ppb for 0-1 ppm
• H2S/TOS TS MEDOR ppm for 0-10 / 0-50 / 0-100 ppm

Principle

• Automatic sampling using a loop
• Automatic loop injection on metallic capillary column
• Isothermal gas chromatograph
• Detection of all compounds eluting from the column performed by MEDOR® detector : Electrochemical wet cell Detector which is a Sulfur Specific Detector (SSD)
• Signal provided by electrochemical reaction between the wet cell electrolyte and the sulfur compounds
• Fully compliant with ASTM D 7493-14 : Standard Test Method for On-line Measurement of Sulfur Compounds in Natural Gas and Gaseous Fuelsby Gas Chromatograph and Electrochemical Detection.
• Compliant with ASTM D 5504-20 : Standard Test Method for Determination of Sulfur Compounds in Natural Gas and Gaseous Fuels by Gas Chromatography and Chemiluminescence with alternative detector.

Key points

• Continuous monitoring with automatic online sampling
• Analytical performances :
  – Specific, linear and very sensitive to sulfur compounds
  – Results validation by automatic standard injection
  – Long term stability using detector installed in reservoir
• Extremely low maintenance :
  – Very long life time detector with electrolyte, up to 10 years.
  – Low gas consumption, can be reduced in option
  – More than 10 years data storage
  – No cylinders required thanks to internal calibration tube and gas generators
• Automatic control with process device
• Intelligents system with tunable and interactive alarm levels
• Powerful VISTACHROM Chromatotec® software :
  – Remote monitoring & injection control
  – Full traceability with on board archiving of results and chromatograms

Options

• MODBUS RTU communication protocol
• One modul for 4 x Analog output 4-20 mA or 0-10 V
• 24 V power supply for transportable analyzers
• Multiple stream selector (2 to 10).
• airmopure (XXX031) or nitroxychrom (XXX913CS)
• CALIB with DMS permeation tube
• Explosion proof version Exp or Exd for ATEX, IECEx, Zone 1 and 2 and also for CSA C1D2
• Internal electric heater and/or cooler for temperature regulation of the Exp/Exd cabinet with thermal insulation
• Liquid sample system with purge for Sulfurs extraction from liquid phase (XXPurge ED Ex)
• Multiple stream selector (2 to 32)