{
  "url": "https://openlegislation.uk/eu-regulation-2017-654/annex-VI/division-7/division-7.3/division-7.3.1/division-7.3.1.4",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-654/annex-VI/division-7/division-7.3/division-7.3.1/division-7.3.1.4.json",
  "legislation": "eur/2017/654",
  "legislation_title": "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",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2017-654",
  "path": "annex/VI/division/7/division/7.3/division/7.3.1/division/7.3.1.4",
  "kind": "division",
  "number": "7.3.1.4",
  "heading": "Preparation of measurement equipment for sampling",
  "text": "The following steps shall be taken before emission sampling begins:\n(a) Leak checks shall be performed within 8 hours prior to emission sampling in accordance with point 8.1.8.7;\n(b) For batch sampling, clean storage media shall be connected, such as evacuated bags or tare-weighed filters;\n(c) All measurement instruments shall be started in accordance with the instrument manufacturer's instructions and good engineering judgment;\n(d) Dilution systems, sample pumps, cooling fans, and the data-collection system shall be started;\n(e) The sample flow rates shall be adjusted to desired levels, using bypass flow, if desired;\n(f) Heat exchangers in the sampling system shall be pre-heated or pre-cooled to within their operating temperature ranges for a test;\n(g) Heated or cooled components such as sample lines, filters, chillers, and pumps shall be allowed to stabilize at their operating temperatures;\n(h) Exhaust gas dilution system flow shall be switched on at least 10 minutes before a test sequence;\n(i) Calibration of gas analyzers and zeroing of continuous analyzers shall be carried out in accordance with the procedure of point 7.3.1.5;\n(j) Any electronic integrating devices shall be zeroed or re-zeroed, before the start of any test interval.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Substituted by Commission Delegated Regulation (EU) 2018/989 of 18 May 2018 amending and correcting Delegated Regulation (EU) 2017/654 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 (Text with EEA relevance)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2017/654/annex/VI/division/7/division/7.3/division/7.3.1/division/7.3.1.4",
    "retrieved_at": "2026-11-01T14:45:01.864924+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}