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Smoke opacimeter opacity meter exhaust gas

Smoke Opacity - DieselNet

Abstract: Smoke opacity instruments measure optical properties of diesel smoke, providing an indirect way of measuring of diesel particulate emissions.There are two groups of instruments: opacity meters, which evaluate smoke in the exhaust gas, and smoke number meters, which optically evaluate soot collected on paper filters.

optical path - Traduction française – Linguee

The length of the smoke obscured optical path between the opacimeter light [...]

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(A) abrasive paper abrasive base paper absorbing paper ; account book paper

PHILIPPINE CLEAN AIR ACT OF 1999 -

Full text of the Implementing Rules of the Philippine Clean Air Act of 1999 (Republic Act No. 8749). Featured on the World Wide Web by The Law Firm of Chan Robles & Associates - Philippines.