Medor - Model THT -Gas Odour Measurement Analyzer

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 (...)