{"id":281577,"date":"2024-10-19T19:01:36","date_gmt":"2024-10-19T19:01:36","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-48712009\/"},"modified":"2024-10-25T15:40:49","modified_gmt":"2024-10-25T15:40:49","slug":"bs-en-iso-48712009","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-48712009\/","title":{"rendered":"BS EN ISO 4871:2009"},"content":{"rendered":"<p>This International Standard<\/p>\n<ul>\n<li>\n<p>gives information on the declaration of noise emission values,<\/p>\n<\/li>\n<li>\n<p>describes acoustical and product information to be presented in technical documents for the purposes of noise emission declaration, and<\/p>\n<\/li>\n<li>\n<p>specifies a method for verifying the noise emission declaration.<\/p>\n<\/li>\n<\/ul>\n<p>It is applicable to machinery and equipment.<\/p>\n<p>The values to be used for the purposes of noise emission declaration are either declared singlenumber noise emission values, <i>L<\/i>d, or declared dualnumber noise emission values, <i>L<\/i> and <i>K.<\/i> <i>L<\/i> is a noise emission value determined directly from measurements and <i>K<\/i> is the uncertainty associated with those measurements. <i>L<\/i>d is the sum of <i>L<\/i> and <i>K<\/i> and represents an upper limit which values from repeated measurements are unlikely to exceed at a given confidence level; <i>L<\/i>d corresponds to the stated or labelled value, <i>L<\/i>c, defined in ISO 7574-1.<\/p>\n<p>The two forms of noise declaration are alternative means of representing any or all of the A-weighted sound power level, <i>L<\/i><sub>wA<\/sub>, the A-weighted emission sound pressure level at specified positions, <i>L<\/i><sub>pA<\/sub>, and the C-weighted peak emission sound pressure level at specified positions, <i>L<\/i><sub>pC,peak<\/sub>\u00b7 The choice as to which of the two forms is used in a particular case depends upon the requirements to be fulfilled. This selection is made, and guidance on the values of <i>K<\/i> is given, in the appropriate noise test code.<\/p>\n<p>Guidelines for determining declared noise em1ss1on values are given in annex A.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Acoustics. Declaration and verification of noise emission values of machinery and equipment<\/b><\/p>\n<table class=\"shortdes-table\" style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/bsi\/\"><b>BSI<\/b><\/a><\/td>\n<td>2010<\/td>\n<td>22<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":281580,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-281577","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/281577","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/281580"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=281577"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=281577"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=281577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}