F1ANNEX IIIAVERIFYING REAL DRIVING EMISSIONS

Annotations:
Appendix 1

Test procedure for vehicle emissions testing with a Portable Emissions Measurement System (PEMS)

4.PRE-TEST PROCEDURES

4.4.Preparing the EFM

If used for measuring the exhaust mass flow, the EFM shall be purged and prepared for operation in accordance with the specifications of the EFM manufacturer. This procedure shall, if applicable, remove condensation and deposits from the lines and the associated measurement ports.