Chromatotec Group

- Model C1-C6+ - Hydrocarbons Measurement for Calorific Value and WOBBE Index Computation

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The chromEnergy is an automatic and industrial gas analyzer designed for the measurement of hydrocarbons in natural gas. Using a Thermal Conductivity Detector (TCD), the analyzer is the perfect tool to detect and quantify hydrocarbons from C1 to C6+. Coupled with the last version of Chromatotec’s software (Vistachrom), the instrument is able to provide calorific value and WOBBE index to the end user. With its high sensitivity and robustness, the chromEnergy will be the perfect instrument for natural gas characterization.

The chromEnergy is an industrial gas chromatograph for analysis and monitoring of C1C6+ in natural gas and gaseous fuels by TCD detection.

  • Automatic sampling usting a loop
  • Loop injection by automatic valve on the column
  • Back flush column for C6+ analysis and column cleaning
  • Isothermal gas chromatograph
  • Detection of all compounds eluting from the column performed by the micro TCD detector

  • Continuous monitoring with automatic online sampling
  • A pressure safety is located at detector outlet to protect the filament
  • Calorific value unit is configurable on request
  • Low maintenance instrument
  • Full traceability of results and calibration
  • 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
  • Algorithms using analog and digital signals received from flowmeters, temperature, pressure and density transmitters.

  • Explosion proof Exp box
    • ATEX Zone 2 : Ex II 3G Ex pz IIC T4
    • CSA International Class 1 Div 2, group B, C & D
  • Multiple stream selector (up to 16 streams with one analyzer)
  • Calculation modules (average / statistics / heating value...)
  • Module 4-20 mA / 0-10 V 4 output and 0 mA for instrument default
  • Electric selection valve to reduce air consumption
  • Gas cleaner
  • 24 V DC power supply
  • Carrier gas purificator

Detection limit:

  • Down to 10 ppm on Hexane

Detection range:

  • ppm to %

Relative Standard Deviation: Repeatability

  • RSD < 3 % over 48 h (concentration)
  • RSD < 0.5 % over 48 h (retention time)

Supervisor:

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

Communication:

  • Communication protocol MODBUS

Cycle time:

  • 10 minutes for C6+ / N2 / CO2 / C1 / C2 / C3 / IC4 /
  • NC4 / NeoC5 / IC5 / NC5

Gas supply:

  • Carrier gas : He (4 bar; 1/16’’) : 18 ml/min
  • Calibration inlet: 1 bar; 1/16’’
  • Sample inlet: 1 bar; 1/16’’
  • Pneumatic valve 90 ml/commutation

Power supply:

  • Main (230 V / 115 V 50 Hz/60Hz)

Electric consumption:

  • Average: 100 VA; Peak: 200 VA

Dimensions and weight:

  • Rack: 19’’ (5U)
  • Height: 222 mm
  • Width: 482 mm
  • Depth: 660 mm
  • Net weight of analyser: 22 kg

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