Design and trial of a low cost inspection graded Portable Emission Measurement System (PEMS): for in-the field exhaust emission measurement in Hong Kong

This paper describes the rationale and background for a low cost Portable Emission Measurement System in Hong Kong. We describe an accurate and portable system design which makes emissions testing feasible and applicable for a broad range of applications. By using industry standard components the test results are comparable to certified laboratory systems. The low cost system takes emissions testing out of the laboratory into a larger range of applications making emissions testing more viable and available in locations previously very hard to test. The added benefits of deploying such systems lie in better data collection, for systems previously too difficult to measure due to location and or cost.