# 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, Division 8.1.2: Summary of calibration and verification Extent: E+W+S+N.I. Table 6.4 summarizes the calibrations and verifications described in section 8 and indicates when these have to be performed. Table 6.4 Summary of Calibration and Verifications Perform calibrations and verifications more frequently, according to measurement system manufacturer instructions and good engineering judgment. The CVS verification is not required for systems that agree within ± 2 % based on a chemical balance of carbon or oxygen of the intake air, fuel, and diluted exhaust gas. Type of calibration or verification Minimum frequency 8.1.3: accuracy, repeatability and noise Accuracy: Not required, but recommended for initial installation. Repeatability: Not required, but recommended for initial installation. Noise: Not required, but recommended for initial installation. 8.1.4: linearity verification Speed: Upon initial installation, within 370 days before testing and after major maintenance. Torque: Upon initial installation, within 370 days before testing and after major maintenance. Intake air, dilution air and diluted exhaust gas flows and batch sample flow rates: Upon initial installation, within 370 days before testing and after major maintenance, unless flow is verified by propane check or by carbon or oxygen balance. Raw exhaust gas flow: Upon initial installation, within 185 days before testing and after major maintenance, unless flow is verified by propane check or by carbon or oxygen balance. Gas dividers: Upon initial installation, within 370 days before testing and after major maintenance. Gas analyzers (unless otherwise noted): Upon initial installation, within 35 days before testing and after major maintenance. FTIR analyser: Upon installation, within 370 days before testing and after major maintenance. PM balance: Upon initial installation, within 370 days before testing and after major maintenance. Stand-alone pressure and temperature: Upon initial installation, within 370 days before testing and after major maintenance. 8.1.5: Continuous gas analyzer system response and updating-recording verification — for gas analyzers not continuously compensated for other gas species Upon initial installation or after system modification that would affect response. 8.1.6: Continuous gas analyzer system response and updating-recording verification — for gas analyzers continuously compensated for other gas species Upon initial installation or after system modification that would affect response. 8.1.7.1: torque Upon initial installation and after major maintenance. 8.1.7.2: pressure, temperature, dew point Upon initial installation and after major maintenance. 8.1.8.1: fuel flow Upon initial installation and after major maintenance. 8.1.8.2: intake flow Upon initial installation and after major maintenance. 8.1.8.3: exhaust gas flow Upon initial installation and after major maintenance. 8.1.8.4: diluted exhaust gas flow (CVS and PFD) Upon initial installation and after major maintenance. 8.1.8.5: CVS/PFD and batch sampler verification Upon initial installation, within 35 days before testing, and after major maintenance. (Propane check) 8.1.8.8: vacuum leak Upon installation of the sampling system. Before each laboratory test according to point 7.1: within 8 hours before the start of the first test interval of each duty cycle sequence and after maintenance such as pre-filter changes. 8.1.9.1: CO2 NDIR H2O interference Upon initial installation and after major maintenance. 8.1.9.2: CO NDIR CO2 and H2O interference Upon initial installation and after major maintenance. 8.1.10.1: FID calibration HC FID optimization and HC FID verification Calibrate, optimize, and determine CH4 response: upon initial installation and after major maintenance. Verify CH4 response: upon initial installation, within 185 days before testing, and after major maintenance. 8.1.10.2: raw exhaust gas FID O2 interference For all FID analyzers: upon initial installation, and after major maintenance. For THC FID analyzers: upon initial installation, after major maintenance, and after FID optimization according to 8.1.10.1. 8.1.11.1: CLD CO2 and H2O quench Upon initial installation and after major maintenance. 8.1.11.3: NDUV HC and H2O interference Upon initial installation and after major maintenance. 8.1.11.4: Sample dryer NO 2 penetration (chiller) Upon initial installation and after major maintenance. 8.1.11.5: NO2-to-NO converter conversion Upon initial installation, within 35 days before testing, and after major maintenance. 8.1.12: Sample dryer verification For thermal chillers: upon installation and after major maintenance. For osmotic membranes: upon installation, within 35 days of testing and after major maintenance. 8.1.13.1: PM balance and weighing Independent verification: upon initial installation, within 370 days before testing, and after major maintenance. Zero, span, and reference sample verifications: within 12 hours of weighing, and after major maintenance. --- Source: https://www.legislation.gov.uk/eur/2017/654/annex/VI/division/8/division/8.1/division/8.1.2 (the official version) Page: https://openlegislation.uk/eu-regulation-2017-654/annex-VI/division-8/division-8.1/division-8.1.2 Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.