BS ISO 11614:1999

This standard BS ISO 11614:1999 Reciprocating internal combustion compression-ignition engines. Apparatus for measurement of the opacity and for determination of the light absorption coefficient of exhaust gas is classified in these ICS categories:

• 13.040.50 Transport exhaust emissions
• 43.180 Diagnostic, maintenance and test equipment
• 43.060.01 Internal combustion engines for road vehicles in general

This International Standard specifies the general requirements and the installation of apparatus for measurement of the opacity and for the determination of the light absorption coefficient of exhaust gas from internal combustion engines (not confined to road vehicles). These instruments are known as opacimeters.