SCHEDULE 5

(ANNEX V to Directive 97/68/EC)

ANALYTICAL AND SAMPLING SYSTEM
Figure 12

Partial flow dilution system with flow control and fractional sampling

— ISP isokinetic sampling probe (Figures 4 and 5)
The isokinetic sampling probe must be installed facing upstream on the exhaust pipe centre-line where the flow conditions in section EP are met, and designed to provide a proportional sample of the raw exhaust gas. The minimum inside diameter shall be 12 mm.