NAC445B.767. Specifications for equipment for measurement of smoke opacity; test procedure.

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1. Equipment for the measurement of smoke opacity must meet the specifications set forth in section 6 of the Society of Automotive Engineers Procedure, SAE J1667, “Snap-Acceleration Smoke Test Procedure for Heavy-Duty Diesel Powered Vehicles.”

2. The test procedure must comply with the provisions of section 5 of SAE J1667, including the preparation phase and preconditioning phase set forth in subsections 1, 2 and 3 of section 5 of SAE J1667.

(Added to NAC by Environmental Comm’n, eff. 10-22-92; A 5-3-96, eff. 7-1-96; R102-02, 10-18-2002)

                    
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