Chromatotec Group

- Model THT - Odour Measurement Analyzer

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Online analysis & control of gas odorisatio.

THT Medor is an online Gas Chromatograph dedicated to the analysis of THT present in different gases.
Two versions of the instrument exist : 

  • THT Medor ppm (measuring at ppm levels)
  • THT Medor ppb (measuring at ppb levels)

  • Internal pressure & temperature monitoring
  • Sample loop injection is made by automatic valve
  • THT Medor uses a sulphur specific electrochemical cell for the detection of THT

  • Online, continuous sampling
  • No interference from other compounds
  • Low maintenance instrument – detector life may be up to 10 years
  • Automatic Validation of results by Internal Permeation Tube
  • Modifiable threshold alarms – High / Low alarm for odorising processes

 Chromatotec developed software system enables :

  • Remote monitoring injection control
  • Full traceability with on board archiving of results
  • QC Set up and control of threshold alarms
  • Export of data MODBUS / MGS1 / 4-20mA / 0-10V

  • Multiple stream selector (up to 32 streams with one analyser)
  • Explosion proof version Exp or Exd for ATEX, IECEx zone 1 and 2 group IIC T4 and also for CSA C1D2 group B , C & D T4
  • Calculation modules (Average / Statistics / Odor index and more)
  • Automatic data transfert through: Module for 4 outputs 4-20 mA (with 0 mA for instrument default) / 0 - 10 V / MODBUS RTU or TCPI IP or MGS1
  • Nitrogen or air generator for safe and hasardous area
  • 24 V DC power supply
  • Electric selection valve to reduce air consumption
  • Liquid injection valve from LPG up to condensates
  • High concentration injection valve up to 5%
  • Wall mounted box XXX934
  • Liquid injection valve for LPG analysis
  • Touch screen on the front panel for Exp version (only ATEX)
  • External cylinder inlet for automatic calibration from external cylinder
  • MFC for multipoint calibration from internal CALIB and/or from cylinder
  • Zero method

Compounds Analysed:

  • THT – TetraHydroThiophene and TBM Ter Buthyl Mercaptan

Detection Limit:

  • ppm Model – 1 mg/m3
  • ppb Model – 0.3 mg/m3

Detection Range:

  • ppm model - 1 to 50 mg/m3
  • ppb model - 0.3 to 3.0mg/ m3
  • (Ranges adjustable depending on Application)

Relative Standard Deviation:

  • RSD < 2 % on concentration over 48H
  • RSD < 0.6% on retention time over 48H

Cycle Time:

  • THT and TBM 180s (for one stream)
  • THT and TBM 240s to 300s (for multi stream)

Supervisor:

  • Embeded computer Windows® based with LCD display
  • 128 GB of Hardware storage on SSD memory

Communication:

  • MODBUS RTU included in standard
  • Ethernet, remote control

Gas supply:

  • Carrier Gas: N2 (3 bars): 10 ml/min
  • Internal calibration: 50 ml/min (if selected)
  • Sample inlet 1 bar (160 ml/min)
  • Pneumatic valve 90 ml/commutation

Power supply:

  • Main: 230V / 60Hz or 115V / 50Hz
  • In case of power loss, the isntrument will restart automatically

Electrical consumption:

  • Mean: 150 VA

Dimensions and weight:

Rack: 19’’ - (5U)

  • Height: 222mm
  • Width: 482mm
  • Depth: 600mm
  • Net weight: 22Kg

Exp version:

  • Height: 800mm
  • Width: 600mm
  • Depth: 320mm
  • Net weight: 40Kg

Medor Norm ISO 6326/2

Our Medor analysers (on-line sulfur detection in Air or natural gas / GPL) got the ISO Norm in 1981. Determination of gas method for the qualitative and quantitative analysis of sulphur compounds (...)

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