# 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 9.3.3.1: Sampling probes

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

PM probes with a single opening at the end shall be used. PM probes shall be oriented to face directly upstream.
The PM probe may be shielded with a hat that conforms with the requirements in Figure 6.8. In this case the pre-classifier described in point 9.3.3.3 shall not be used.

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Source: https://www.legislation.gov.uk/eur/2017/654/annex/VI/division/9/division/9.3/division/9.3.3/division/9.3.3.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-654/annex-VI/division-9/division-9.3/division-9.3.3/division-9.3.3.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.