Produced in accordance with ISO-17025
Exhaust gas emission testing is a process where test equipment is used to measure the gases produced by a cars engine. A probe is placed in the tailpipe of the car and the exhaust gases are measured following a strict procedure. The exhaust gas analyser is used for measuring 4 gases, oxygen (O2), carbon monoxide (CO), carbon dioxide (CO2) and hydrocarbons (HC) as well as calculating lambda (λ) a measure of air/fuel ratio. These measurements together provide a very accurate way of measuring the combustion efficiency of an engine.
The vehicle exhaust emission test legislation requires that the instrument used to test the vehicles is type approved by a national recognized body. In addition the instrument must be calibrated using a Certified Reference Standard produced in accordance with ISO17025.
(Vehicle Test is also referred to as MOT (UK), APK (NL), Bilprovning (S))
The International Organization of Legal Metrology (OIML) is a worldwide, intergovernmental organization whose primary aim is to harmonize the regulations and metrological controls applied by the national metrological services. Recommendations, Documents and Guides are developed by Technical Committees. Cooperative agreements have been established between the OIML and ISO and the IEC, with the objective of avoiding contradictory requirements.