Fuel Gas Analysis

Our work is focused on the chemical analysis of fuel gases and their combustion products. In addition to the classical natural gases and coal gases, we also investigate the chemical composition of alternative combustible gas mixtures such as bio fuels and hydrogenous energy gases. This allows us to determine physico-chemical gas-mixture properties such as calorific value, density, Wobbe index, molar mass and compression factors. By means of reference gas mixtures (calibration gases) as reference standards, we can disseminate them in such a way that they are traceable. We generally use gas chromatography combined with different detectors as an analytical method.

In addition, we perform conformity assessments of gas analyzers according to the German Verification Act that are used as gas-quality measuring devices, calorific-value determining devices and density gauges within the scope of gas billing.

Our R&D projects are structured around our Working Group’s profile, with an emphasis on:

• Development of new combustion-gas and exhaust-gas analysis procedures
      EMPIR Project 20IND10 (2021-2024)
      Metrology for decarbonising the gas grid
      BMDV Project 03B11026 (2023-2025)
      Comparability of Hydrogen Quality Analysis (RingWaBe)

• Traceability and verification of calibration gas mixtures
• Improvement of evaluation and calibration procedures for gas analyzers

The services offered by our Working Group serve to support industry and society.

• Provision of conformity assessments within the scope of the German Measures and Verification Act concerning gas-quality measuring devices and their auxiliary equipment
• Certification of calibration gas mixtures for legal metrology according to DIN EN ISO 6143 and DIN 51899, as well as evaluation of gas properties according to DIN EN ISO 6976
• Testing of the efficiency of fuel-gas analyzers
• Participation in working committee "Gas Measurement", "Arbeitsgemeinschaft Mess- und Eichwesen AGME"
• Consultation of the verification authorities and industry in case of legal gas-quality analysis
• Provision of consultation to the German Accreditation Service (DAkkS) within the Metrology Expert Council
• Provision of expert assessments to calibration and test laboratories, as well as to manufacturers of reference material, in the field of gases and their chemical analysis, on behalf of the German Accreditation Service (DAKKS)
• Participation in the development of standards for gas analysis and gas quality on the DIN committee NA-062-05-73 AA and ISO TC 193 “Natural Gas”
• Participation in TC 20 "Measurements of Energy & Related Quantities", IMEKO (International Measurement Confederation)

Below, we have provided you with the following information:

• List of the gas mixtures according to PTB requirement 7.63 with calorific values and densities according to DIN EN ISO 6976:2016
• List of the gas mixtures according to PTB requirement 7.63 with calorific values and densities according to DIN 51857
• Order form for conformity assessments of gas-quality measuring devices
• Analytical verification of calibration gas mixtures according to DIN EN ISO 6143