{
  "url": "https://openlegislation.uk/weights-and-measures-local-and-working-standard-capacity-measures-and-testing-equipment-regulations-1990/regulation-6",
  "json_url": "https://openlegislation.uk/weights-and-measures-local-and-working-standard-capacity-measures-and-testing-equipment-regulations-1990/regulation-6.json",
  "legislation": "uksi/1990/2626",
  "legislation_title": "The Weights and Measures (Local and Working Standard Capacity Measures and Testing Equipment) Regulations 1990",
  "legislation_url": "https://openlegislation.uk/weights-and-measures-local-and-working-standard-capacity-measures-and-testing-equipment-regulations-1990",
  "path": "regulation/6",
  "kind": "regulation",
  "number": "6",
  "heading": "Reference meters",
  "text": "A reference meter shall have been tested over the range of flowrates and liquids for which it is intended to be used within 24 months before use, and the results of the test shall be such that—\n(a) the range of five consecutive tests with the same liquid at the same flowrate does not exceed 0.05 per cent of the quantity delivered on each test;\n(b) the linearity shall be such that the range of the means of any five consecutive tests with the same liquid within the flowrate range shall not exceed 0.1 per cent of the quantity delivered on each test; and\n(c) notwithstanding the application of corrections when a reference meter is used to test meter measuring systems in accordance with the Measuring Equipment (Liquid Fuel delivered from Road Tankers) Regulations 1983 or the Measuring Instruments (EEC Requirements) Regulations 1988, the relative error of the mean of any five consecutive tests shall not exceed 0.5 per cent of the quantity delivered on any test.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "S.I. 1983/1390, amended by S.I. 1986/1210."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "S.I. 1988/186, amended by S.I. 1988/1128."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1990/2626/regulation/6",
    "retrieved_at": "2026-10-29T14:53:54.257768+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."
}