Hartridge Smoke Unit (HSU) and FILTER SMOKE NUMBER(FSN)

AI Thread Summary
The discussion focuses on the correlation between the Hartridge Smoke Unit (HSU) and the Filter Smoke Number (FSN) in measuring smoke emissions. Users are seeking to compare results from both systems, which provide different readings. A correlation chart that includes various smoke units is mentioned as a helpful resource, with a suggestion to refer to Dieselnet for access. Understanding the relationship between HSU and FSN is essential for accurate emissions analysis. The conversation emphasizes the importance of reliable data in assessing smoke levels.
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Anyone who can tell me the corelation between Hartridge Smoke Unit (HSU) and FILTER SMOKE NUMBER(FSN) as I have the two systems giving one in HSU and the other in FSN.I would like to compare the result given by the two SYSTEM
 
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There's a nice correlation chart (with the other smoke units) available, I think I got mine from Dieselnet. Have a look there.
 

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