5.9.2 Main exhaust components to be analysed
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5.9.2 Main exhaust components to be analysed

  5.9.2.1 An analytical system for the determination of the gaseous emissions (CO, CO2, HC, NOx, O2) in the raw exhaust gas shall be based on the use of the following analysers:

  • .1 HFID analyser for the measurement of hydrocarbons;

  • .2 NDIR analyser for the measurement of carbon monoxide and carbon dioxide;

  • .3 HCLD or equivalent analyser for the measurement of nitrogen oxides; and

  • .4 PMD, ECS or ZRDO for the measurement of oxygen.

  5.9.2.2 For the raw exhaust gas, the sample for all components may be taken with one sampling probe or with two sampling probes located in close proximity and internally split to the different analysers. Care must be taken that no condensation of the exhaust components (including water and sulphuric acid) occurs at any point of the analytic system.

  5.9.2.3 Specifications and calibration of these analysers shall be as set out in appendices 3 and 4 of this Code, respectively.

Parent topic: 5.9 Test run
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