PM number definition

PM number means the number of particles which is defined in the relevant series of amendments to Regulation No.49;
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PM number means the number of particles which is defined in the relevant series of amendments to UN Regulation No.49 (this definition is not used in the current provisions)…
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PM number means the number of particles which is defined in the relevant series of amendments to Regulation No.49;any material counted with an instrument as defined in this Regulation accordance with the procedure
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Examples of PM number in a sentence

  • The pollutant emissions to be measured from the exhaust of the engine include the following components: carbon monoxide, total hydrocarbons, nitrogen oxides and PM number for compression ignition engines and carbon monoxide, non- methane hydrocarbons, methane, nitrogen oxides and PM number for positive ignition engines.

  • The PM number analyser shall consist of a pre-conditioning unit and a particle detector (see Figure 1).

  • The PM number analyser shall fulfil the requirements of this Regulation and the specifications of the instrument manufacturer.

  • The gaseous emissions and the PM number shall be measured according to the procedure set out in Appendix 1.

  • The data from the PM number analyser shall be time aligned with its own transformation time, according to the instrument manufacturer’s instructions.