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EnCal 3000 Natural Gas Chromatograph

Manufacturer: Honeywell Elster

A chromatograph specially designed for natural gas energy measurements. Considered a state-of-the-art analyzer that uses chromatography components based on the latest and most modern electromechanical systems (MEMS), resulting in highly accurate analyses. With a compact, explosion-proof design, it includes the analytical hardware, current selection, and all electronics necessary for autonomous operation.


  • Fiscal measurement of the BTU (calorific value) of the gas;
  • Percentage measurement of each component of natural gas;
  • Gas quality measurement and control.


  • Accuracy: 0.1%;
  • Repeatability: 0.005%.

Main features and differentials

  • C6+ => Analysis time 3 minutes;
  • C9 => Analysis time 5 minutes;
  • Repeatability in BTU <0.005%;
  • Double block and bleed;
  • Selection of up to 5 currents + 01 calibration current;
  • TCP/IP communication;
  • Data storage according to API 21.1;
  • IP 66 enclosure;
  • RGC 3000 software for configuration, diagnostics and monitoring;
  • Ambient temperature range: -20 °C to +54 °C;
  • One Helium cylinder every 02 (two) years;
  • Calculations in accordance with ISO 6976, GPA 2172 or GOST 22667.


  • Calculation of dew point of hydrocarbons;
  • Gas Controller - Net 3000;
  • Sulfuros and H2S Analysis;
  • O2 Analysis.

Certifications and Approvals

  • PAM (Model Approval Ordinance) - Inmetro - Inmetro/Dimel Ordinance No. 208, of July 6, 2020, issued in accordance with the Metrological Technical Regulation for in-line gas chromatographs, approved by Inmetro Ordinance No. 272/2014 and Inmetro Ordinance No. 306/2019.
    This Ordinance approves the use of the in-line gas chromatograph, model Encal 3000, in use to determine the chemical composition of natural gas in the scope of Fiscal Measurement and Custody Transfer;
  • INMETRO definitive certificate for use in classified area Ex db IIC T6 Gb, in accordance with INMETRO Ordinance No. 179 of 05/18/2010.

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