Measurement Procedure for Evaluation of Full-Flow, Light Extinction Smokemeter Performance
This SAE Recommended Practice is for evaluating the performance of full- flow, light extinction type smokemeters (opacimeters) designed to measure the exhaust smoke opacity from diesel engines. It is intended to serve as a design and development guide for instrument manufacturers and as a performance evaluation procedure to be used by engine laboratories for determining by a standard method, the performance of developed smokemeters. This recommended practice does not develop the various instrumental techniques for measuring smoke since these are contained in sAE Information Report, SAE J255 (1). The background data supporting this recommended practice is contained in Reference (2) and (3). SAE recommended Practice J35 (4) contains guidelines for running engine tests with developed full-flow light extinction type smokemeters.