{
  "url": "https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/5/division/division-5./division-5.2./division-5.2.2.",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/5/division/division-5./division-5.2./division-5.2.2..json",
  "legislation": "eur/2017/1151",
  "legislation_title": "Commission Regulation (EU) 2017/1151 of 1 June 2017 supplementing Regulation (EC) No 715/2007 of the European Parliament and of the Council on type-approval of motor vehicles with respect to emissions from light passenger and commercial vehicles (Euro 5 and Euro 6) and on access to vehicle repair and maintenance information, amending Directive 2007/46/EC of the European Parliament and of the Council, Commission Regulation (EC) No 692/2008 and Commission Regulation (EU) No 1230/2012 and repealing Commission Regulation (EC) No 692/2008 (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2017-1151",
  "path": "annex/Sub/5/division/division/5./division/5.2./division/5.2.2.",
  "kind": "division",
  "number": "5.2.2",
  "heading": "Each normally used operating range shall be linearized by the following procedure:",
  "text": "5.2.2.1.The analyser linearization curve shall be established by at least five calibration points spaced as uniformly as possible. The nominal concentration of the calibration gas of the highest concentration shall be not less than 80 per cent of the full scale.\n5.2.2.2.The calibration gas concentration required may be obtained by means of a gas divider, diluting with purified N2 or with purified synthetic air.\n5.2.2.3.The linearization curve shall be calculated by the least squares method. If the resulting polynomial degree is greater than 3, the number of calibration points shall be at least equal to this polynomial degree plus 2.\n5.2.2.4.The linearization curve shall not differ by more than ± 2 per cent from the nominal value of each calibration gas.\n5.2.2.5.From the trace of the linearization curve and the linearization points it is possible to verify that the calibration has been carried out correctly. The different characteristic parameters of the analyser shall be indicated, particularly:\n(a)Analyser and gas component;\n(b)Range;\n(c)Date of linearisation.\n5.2.2.6.If the approval authority is satisfied that alternative technologies (e.g. computer, electronically controlled range switch, etc.) give equivalent accuracy, these alternatives may be used.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2017/1151/annex/Sub/5/division/division/5./division/5.2./division/5.2.2.",
    "retrieved_at": "2026-11-01T14:44:48.753743+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."
}