{
  "url": "https://openlegislation.uk/eu-regulation-2017-654/annex-VI/division-9/division-9.4/division-9.4.3/division-9.4.3.2",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-654/annex-VI/division-9/division-9.4/division-9.4.3/division-9.4.3.2.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/9/division/9.4/division/9.4.3/division/9.4.3.2",
  "kind": "division",
  "number": "9.4.3.2",
  "heading": "Component requirements",
  "text": "Table 6.8 shows the specifications of transducers of torque, speed, and pressure, sensors of temperature and dew point, and other instruments. The overall system for measuring the given physical and/or chemical quantity shall meet the linearity verification in point 8.1.4. For gaseous emissions measurements, analyzers may be used, that have compensation algorithms that are functions of other measured gaseous components, and of the fuel properties for the specific engine test. Any compensation algorithm shall only provide offset compensation without affecting any gain (that is no bias).\nTable 6.8\nRecommended performance specifications for measurement instruments\nAccuracy and repeatability are all determined with the same collected data, as described in point 9.4.3, and based on absolute values. ‘pt.’ refers to the overall mean value expected at the emission limit; ‘max.’ refers to the peak value expected at the emission limit over the duty cycle, not the maximum of the instrument's range; ‘meas.’ refers to the actual mean measured over the duty cycle.\nMeasurement Instrument\nMeasured quantity symbol\nComplete SystemRise time\nRecording update frequency\nAccuracy\nRepeatability\nEngine speed transducer\nn\n1 s\n1 Hz means\n2,0 % of pt. or\n0,5 % of max\n1,0 % of pt. or\n0,25 % of max\nEngine torque transducer\nT\n1 s\n1 Hz means\n2,0 % of pt. or\n1,0 % of max\n1,0 % of pt. or\n0,5 % of max\nFuel flow meter\n(Fuel totalizer)\n5 s\n(N/A)\n1 Hz\n(N/A)\n2,0 % of pt. or\n1,5 % of max\n1,0 % of pt. or\n0,75 % of max\nTotal diluted exhaust gas meter (CVS)\n(With heat exchanger before meter)\n1 s\n(5 s)\n1 Hz means\n(1 Hz)\n2,0 % of pt. or\n1,5 % of max\n1,0 % of pt. or\n0,75 % of max\nDilution air, inlet air, exhaust gas, and sample flow meters\n1 s\n1 Hz means of 5 Hz samples\n2,5 % of pt. or\n1,5 % of max\n1,25 % of pt. or\n0,75 % of max\nContinuous gas analyzer raw\nx\n5 s\n2 Hz\n2,0 % of pt. or\n2,0 % of meas.\n1,0 % of pt. or\n1,0 % of meas.\nContinuous gas analyzer dilute\nx\n5 s\n1 Hz\n2,0 % of pt. or\n2,0 % of meas.\n1,0 % of pt. or\n1,0 % of meas.\nContinuous gas analyzer\nx\n5 s\n1 Hz\n2,0 % of pt. or\n2,0 % of meas.\n1,0 % of pt. or\n1,0 % of meas.\nBatch gas analyzer\nx\nN/A\nN/A\n2,0 % of pt. or\n2,0 % of meas.\n1,0 % of pt. or\n1,0 % of meas.\nGravimetric PM balance\nm PM\nN/A\nN/A\nSee 9.4.11\n0,5 μg\nInertial PM balance\nm PM\n5 s\n1 Hz\n2,0 % of pt. or\n2,0 % of meas.\n1,0 % of pt. or\n1,0 % of meas.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "Accuracy and repeatability are all determined with the same collected data, as described in point 9.4.3, and based on absolute values. ‘pt.’ refers to the overall mean value expected at the emission limit; ‘max.’ refers to the peak value expected at the emission limit over the duty cycle, not the maximum of the instrument's range; ‘meas.’ refers to the actual mean measured over the duty cycle."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2017/654/annex/VI/division/9/division/9.4/division/9.4.3/division/9.4.3.2",
    "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."
}