OIML R99-2 Instruments for Measuring Vehicle Exhaust Emissions - Part 2: Metrological Controls and Performance Tests

Automotive Tests

OIML R99-2 Instruments for Measuring Vehicle Exhaust Emissions - Part 2: Metrological Controls and Performance Tests

EUROLAB, together with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of OIML R99-2 testing. This International recommendation specifies metrological and technical requirements and tests for digital measuring instruments (hereinafter "instruments") for determining the volume fractions of certain components of exhaust gases from motor vehicles. The conditions that such instruments must meet in order to meet any OIML performance requirements are also determined.

OIML R99-2 Instruments for Measuring Vehicle Exhaust Emissions - Part 2: Metrological Controls and Performance Tests

To speed up the testing procedure, the test lab can run different tests in different units at the same time. In this case, the testing laboratory must ensure that all instruments offered are of the same type. All accuracy and efficacy tests and inspections will be performed on the same unit, however deterioration tests may not be performed on more than two additional instruments.

As a rule, tests should be performed on the complete instrument. If the size or configuration of the device is not suitable for testing as a unit, or if only a particular component or device of the device is involved, a test may be performed on the component or device separately. Such tests may only be performed if a simulated measurement pattern can be obtained that reflects the rated operating conditions of the component or device.

A new instrument will only undergo initial verification after type approval. Verification should be done using appropriate test tools and certified reference gases. Subsequent verification should be performed using appropriate test tools and certified reference gases. The subsequent verification interval is subject to national or regional legislation. However, this recommendation recommends an interval not exceeding 1 year.

EUROLAB assists manufacturers with OIML R99-2 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.

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