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    Acoustics- Statistical methods for determining and verifying stated noise emission values of machinery and equipment - Part 4: Methods for stated values for batches of machines
    GYD 50,000

                  


     This contains statistical sampling methods for checking the stated noise emission values for batches (lots) of machines. The labelled value for all machines in a batch is checked by sampling procedures. A reference standard deviation is required when testing the compliance of a batch of a specific family of machines.  In addition, information on the type of sampling to be used (single, double or sequential) and the sample size is required. The procedure specified assumes that the noise emission values of a batch (lot) of machines will follow a normal distribution.  The method ensures that a batch (lot) of machine labelled in accordance with the specifications for the verification procedure has a predetermined probability of acceptance. 

     

     

    • Year of Declaration: 1996
    • Reference: SO 7574-4: 1985
    • Number of Pages: 14
    • Code: GYS 167-4
    • Version:
    • ICS Number: 17.140.20