{
  "url": "https://openlegislation.uk/measuring-instruments-regulations-2016/schedule-1J/paragraph-3.1",
  "json_url": "https://openlegislation.uk/measuring-instruments-regulations-2016/schedule-1J/paragraph-3.1.json",
  "legislation": "uksi/2016/1153",
  "legislation_title": "The Measuring Instruments Regulations 2016",
  "legislation_url": "https://openlegislation.uk/measuring-instruments-regulations-2016",
  "path": "schedule/1J/paragraph/3.1",
  "kind": "paragraph",
  "number": "3.1",
  "heading": null,
  "text": "For each of the fractions measured, the maximum error value permitted under rated operating conditions according to paragraph 1.1 of Schedule 1A is the greater of the two values shown in Table 2. Absolute values are expressed in % vol or ppm vol, percentage values are percent of the true value.\nTable 2\nParameter\nClass 0\nClass I\nMPEs\nCO fraction\n± 0.03 % vol\n± 5 %\n± 0.06 % vol\n± 5 %\nCO2 fraction\n± 0.5 % vol\n± 0.5 % vol\n±5 %\n± 5 %\nHC fraction\n± 10 ppm vol\n± 12 ppm vol\n± 5 %\n± 5 %\nO2 fraction\n± 0.1 % vol\n± 0.1 % vol\n± 5 %\n± 5 %",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Schs. 1A-1K inserted (E.W.S.) (31.12.2020) by The Product Safety and Metrology etc. (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/696), reg. 1, Sch. 27 para. 49 (with Sch. 27 para. 50(a)) (as amended by S.I. 2020/676, regs. 1(1), 2); 2020 c. 1, Sch. 5 para. 1(1)"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/2016/1153/schedule/1J/paragraph/3.1",
    "retrieved_at": "2026-10-28T23:17:40.726189+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."
}