H2S/TOS TS MEDOR

Sulfur compounds analyzer

  • Model: H2S/TOS TS MEDOR®
  • Manufacturer: Chromatotec

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

Targetted compounds:

  • H2s, TOS (Total Organic Sulfur = mercaptans and sulfides) and Total Sulfur (TS) by sum

Main applications:

  • Trace and ultra trace detection in Natural Gas / LPG / Gaseous Fuels
  • H2S in crude oil / Diesel / Fuel oil / Condensates / water
  • Deodorisation/Desulfurisation control ppb
  • Catalyzer protection
  • H2S in pure gas : H2 with special application
Category:

The H2S/TOS TS MEDOR® is an autoGC-ED (MEDOR® Electrochemical wet cell Detector) for the analysis and monitoring of H2S, TOS and TS.

  • Different configurations exist depending on the application and concentration range : HS2/TOS TS MEDOR ppb for 0-1 ppm and 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)
Compounds Analysed: • H2S, TOS (total of mercaptans and sulfides) and TS by sum (H2S + TOS)
Detection Limit: • H2S/TOS TS MEDOR® ppb: 5 ppb H2S (7 μg/m3)
• H2S/TOS TS MEDOR® ppm: 0.1 ppm H2S (0.1417 mg/m3)
Detection Range: H2S / TOS / TS:  • 0/10, 0/100 or 0/1000 (ppb or ppm)
• Low % with HC sampling valve
Relative Standard Deviation: • RSD < 3% on concentration over 48H.
• RSD < 0.6% on retention time over 48H.
Cycle Time: • RSD < 3% on concentration over 48H.
• RSD < 0.6% on retention time over 48H.
Cycle Time: • H2S / TS result in 2 min for 0-3 ppm range
• H2S / TS result in 5 min for higher range
Linearity: • > 0.995 for all compounds
Storage / Transfer of Results: • Hardware storage
• MODBUS communication protocol (optional)
• 4-20mA (optional)
Gas supply: • Carrier: Dry air or N2 (3 bars): 5 ml/min.
• CALIB: in continuous 50 ml/min. (option )
• CALIB during validation ~ 250ml/min (option)
• Pneumatic valve 90ml/commutation
Power supply: • Main (230V / 115V 50/60Hz)
• 24V battery (optional)
Electrical consumption: • 150 VA
Dimensions and weight: Rack: 4582 mm 19″
• Height: 222 mm (5U)
• Width: 482mm
• Depth: 600 mm
• Net weight: 20 Kgs
Wall mounted box:
• Height: 800 mm (1300 mm if XXPurge ED Ex is included)
• Width: 600 mm
• Depth: 300 mm
• Net weight: 40 Kg (50 Kg if XXPurge ED Ex is included)
To order: Model:
H2S/TOS TS MEDOR®

inbuilt computer – 5U (XX022)

M51022-TS
Rack or wall mounted

H2S / TOS TS MEDOR®

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