Laboratory Standards

Various other Standards bodies throughout the world have also published fan test Codes. These are not necessarily of the same technical merit. In a global economy, where fans of vari­ous nations and manufacturers compete regularly, this can present problems where comparisons have to be made. It is al­most impossible to make such comparisons where technical catalogues present data from tests to different national Codes.

In 1997 the first international Standard was published — ISO 5801 — and it is strongly recommended that this should be used in all competitive situations, both in customers, specifications and for acceptance tests. Even this is not enough. Many alter­native methods are detailed in the Standard, which may give slightly different results. Preferably the same method should also be used for an appropriate installation category (See Sec­tion 4.4)

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