# Commission Delegated Regulation (EU) 2017/654 of 19 December 2016 supplementing Regulation (EU) 2016/1628 of the European Parliament and of the Council with regard to technical and general requirements relating to emission limits and type-approval for internal combustion engines for non-road mobile machinery, Division 9.4.6: CO and CO2 measurements

Extent: E+W+S+N.I.

A Non-dispersive infrared (NDIR) analyzer shall be used to measure CO and CO2 concentrations in raw or diluted exhaust gas for either batch or continuous sampling.
The NDIR-based system shall meet the calibration and verifications set out in point 8.1.9.1 or 8.1.9.2, as applicable.

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Source: https://www.legislation.gov.uk/eur/2017/654/annex/VI/division/9/division/9.4/division/9.4.6 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-654/annex-VI/division-9/division-9.4/division-9.4.6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.