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Appendix 2

United Kingdom

Original text. Later amendments are not shown.

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

F1The 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

F23.1.

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.

Annotations

Textual amendments

F1

Substituted by Commission Regulation (EU) No 133/2014 of 31 January 2014 amending, for the purposes of adapting to technical progress as regards emission limits, Directive 2007/46/EC of the European Parliament and of the Council, Regulation (EC) No 595/2009 of the European Parliament and of the Council and Commission Regulation (EU) No 582/2011 (Text with EEA relevance).

F2

Substituted by Commission Regulation (EU) 2016/1718 of 20 September 2016 amending Regulation (EU) No 582/2011 with respect to emissions from heavy-duty vehicles as regards the provisions on testing by means of portable emission measurement systems (PEMS) and the procedure for the testing of the durability of replacement pollution control devices (Text with EEA relevance).