energyMEDOR - H2S, Mercaptans, THT, Sulphides and Total Sulfur Analysis

The energyMEDOR is an automatic and isothermal gas chromatograph dedicated to sulfur compounds analysis (H₂S, mercaptans and sulphides) in different matrices.

Two versions exist : the energyMEDOR ppm which measures at ppm levels and the energyMEDOR ppb which measures at ppb levels.

• Loop injection by automatic valve
• Detection is made by a gas-liquid reaction
• Sulfur specific detector - no interferences
• The detector life is in excess of 10 years

• 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

• Fully compliant with ASTM D 7493-08 : Standard Test Method for Online Measurement of Sulfur Compounds in Natural Gas and Gaseous Fuels by Gas Chromatograph and Electrochemical Detection
• Continuous monitoring with automatic online sampling
• Analytical performances:
• Specific and very sensitive to sulfur compounds
• Results validation by automatic standard injection
• Long term stability using wet cell detector installed in reservoir
• Extremely low maintenance
• Very long life time detector, 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
• Automatic control with process device
• Intelligence system with tunable and interactive alarms levels
• Powerfull VISTACHROM Chromatotec® software:
• Remote monitoring & injection control
• Full traceability with on board archiving of results and chromatograms
• QC Set up and control of threshold alarms
• Data export by MODBUS / 4-20 mA / 0-10 V
• Time stamp results

• Explosion proof Exp box
• ATEX Zone 2 : Ex II 3G Ex pz IIC T4
• CSA International Class 1 Div 2, group B, C & D
• Internal calibration and validation system with permeation tube
• Multiple stream selector (up to 16 streams with one analyzer)
• Calculation modules (Average / Statistics / Odor index...)
• Module 4-20 mA / 0-10 V 4 output and 0 mA for instrument default
• Electric selection valve to reduce air consumption
• 24 V DC power supply

• Detection limits:
• energyMEDOR® ppm: H2S: 0.1 ppm (0.1417 mg/m3), mercaptans: 0.1 ppm
• energyMEDOR® ppb: H2S: 5 ppb (7.0 µg/m3), mercaptans: 5 ppb
• Range (adjustable depending on application): 0/10 or 0/100 or 0/1000 (ppb or ppm)
• Relative Standard Deviation:
• RSD < 3 %: on concentration over 48 h
• RSD < 0.5 %: on retention time over 48 h
• Cycle Time for the following different analysis:
• H2S/MeSH 120 s
• THT 180 s (if only THT)
• H2S, mercaptans1 600 s
• H2S, mercaptans2, THT 1800 s
• Calib during analysis + 200 s
• Supervisor:
• Embedded computer Windows® based with LCD display
• 32 GB of Hardware storage on SSD memory
• Communication: MODBUS protocol included in standard
• Gas supply:
• Carrier: Dry air or N2 (3 bar): < 4 ml/min
• Use N2 if THT is present
• Internal calibration: 50 ml/min for ppm range
• Sample inlet 1 bar
• Pneumatic valve 90 ml/commutation
• Power supply: Main: 230 V / 115 V or 50/60 Hz
• Electrical consumption: Average: 150 VA
• Dimensions and weight:
• Rack: 19" (5U)
• Height: 222 mm
• Width: 482 mm
• Depth: 660 mm
• Net Weight: 22 Kg

• 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 (...)
• The U.H.P. industry Air Liquide, Praxair, Air Products, BOC, Messer, Linde, Takachiho , Aga ... need to control the amount of impurities : Quality control before delibery to customer like : Petrochemistry, (...)
• Odorization low ppm The aim : analyze H2S and mercaptans concentration in natural gas (ppm). These mercaptans are added to natural gas to make it smell to make it detectable by the human nose (odorization process (...)
• Desodorization : ppb The energyMEDOR ppb allows the end user to observe the speciation of each component of the Sulphur present in natural gas, or for quality control of disulphuric gas (ppb) after desodorization. (...)
• Odorization injection and control Mercaptans or THT are added to natural gas to make it smell to make it detectable by the human nose (odorization process and odorization control in pipes). energyMEDOR ppm : 30 years (...)
• EnergyMEDOR : on-line measurement of sulphurs in natural gas - Netherlands 11 - 13 February 2009
• ASTM D7493 - 08 Standard Test Method for Online Measurement of Sulfur Compounds in Natural Gas and Gaseous Fuels by Gas Chromatograph and Electrochemical Detection EnergyMEDOR as reference for the ASTM D7493-08 norm
• NEW ASTM D7493-08 and EXP medor Gaseous fuels, such as natural gas, petroleum gases and bio-gases, contain varying amounts and types of odorous sulphur compounds. Their accurate on-line measurement is essential to gas (...)
• Metrology and on-line Gas Chromatography on sulfur compounds in Natural Gas Transport natural gas companies require to control qualitatively and quantitatively odorants species in natural gas for safety reasons. Chromatotec has introduced the energyMedor which is (...)
• Let’s give the word to users in the USA Over the past few years, our company has purchased twelve Energy Medors from Chromatotec. The analyzers continue to demonstrate their accuracy and reliability year after year. We employ the (...)