# Commission Regulation (EU) No 582/2011 of 25 May 2011 implementing and amending Regulation (EC) No 595/2009 of the European Parliament and of the Council with respect to emissions from heavy duty vehicles (Euro VI) and amending Annexes I and III to Directive 2007/46/EC of the European Parliament and of the Council (Text with EEA relevance), Appendix 2

Extent: E+W+S+N.I.

Portable measurement equipment
1.
GENERAL
The gaseous emissions shall be measured according to the procedure set out in Appendix 1. The present Appendix describes the characteristics of the portable measurement equipment that shall be used to perform such tests.
2.
MEASURING EQUIPMENT
2.1.
Gas analysers general specifications
The PEMS gas analysers specifications shall meet the requirements set out in Section 9.3.1 of Annex 4B to UN/ECE Regulation No 49.
2.2.
Gas analysers technology
The gases shall be analysed using the technologies specified in paragraph 9.3.2 of Annex 4 to UNECE Regulation No 49.
The oxides of nitrogen analyser may also be of the Non-Dispersive Ultra Violet (NDUV) type.
2.3.
Sampling of gaseous emissions
The sampling probes shall meet the requirements set out in paragraphs A.2.1.2 and A.2.1.3 of Appendix 2 to Annex 4 to UNECE Regulation No 49. The sampling line shall be heated to 190 °C (+/– 10 °C).
2.4.
Other instruments
The measuring instruments shall satisfy the requirements set out in Table 7 and paragraph 9.3.1 of Annex 4 to UNECE Regulation No 49.
3.
AUXILIARY EQUIPMENT
3.1.
Exhaust gas flow meter (EFM) tailpipe connection
The installation of the EFM shall not increase the backpressure by more than the value recommended by the engine manufacturer, nor increase the length of the tailpipe by more than 2 m. As for the all the components of the PEMS equipment, the installation of the EFM shall comply with the locally applicable road safety regulations and insurance requirements.
3.2.
PEMS location and mounting hardware
The PEMS equipment shall be installed as specified in Section 2.4 of Appendix 1.
3.3.
Electrical power
The PEMS equipment shall be powered using the method described in point 4.6.6 of Annex II.

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Source: https://www.legislation.gov.uk/eur/2011/582/annex/II/appendix/2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2011-582/annex-II/appendix-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.