|What is OIML Class 1?|
This is the defining standard for exhaust monitoring equipment accuracy, performance and functionality across Europe. All MOT Test Station analyser must meet this standard.
The critical parameters are as follows:
These measurements must be correct for a range of ambient temperatures, humidities and atmospheric pressures.
Please note that NOx measurements are currently not within the scope of the OIML criteria.
Other aspects of the standard include: