{"id":616313,"date":"2024-11-05T23:19:29","date_gmt":"2024-11-05T23:19:29","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/iso-4412-31991\/"},"modified":"2024-11-05T23:19:29","modified_gmt":"2024-11-05T23:19:29","slug":"iso-4412-31991","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/iso\/iso-4412-31991\/","title":{"rendered":"ISO 4412-3:1991"},"content":{"rendered":"<p>\nLa pr\u00e9sente partie de l&#039;ISO 4412 d\u00e9crit des m\u00e9thodes de d\u00e9termination des niveaux de puissance acoustique des pompes pour transmissions hydrauliques dans des conditions d\u00e9finies d&#039;installation et de fonctionnement. Ces m\u00e9thodes doivent fournir une base de comparaison valable des niveaux de bruit \u00e9mis par les pompes, traduits en terme de &#8212; niveau de puissance acoustique, pond\u00e9r\u00e9 A; &#8212; niveau de puissance acoustique par bande de tiers d&#039;octave. Ces niveaux de puissance acoustique permettent de calculer si n\u00e9cessaire les niveaux de pression acoustique de r\u00e9f\u00e9rence devant figurer dans les rapports d&#039;essai (voir article 11). En g\u00e9n\u00e9ral, la gamme des fr\u00e9quences utiles comprend les bandes de tiers d&#039;octave dont les fr\u00e9quences m\u00e9dianes s&#039;\u00e9chelonnent de 100 Hz \u00e0 10 000 Hz.<sup>1)<\/sup>. La pr\u00e9sente partie de l&#039;ISO 4412 est applicable \u00e0 tous les types de pompes hydrauliques, quelle que soit leur taille, fonctionnant dans des conditions sp\u00e9cifi\u00e9es, sauf si une limite est impos\u00e9e par les dimensions de la salle d&#039;essais (voir article 3). 1) 1 Hz = 1 s <sup>-1<\/sup><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Transmissions hydrauliques \u2014 Code d&#8217;essai pour la d\u00e9termination du niveau de bruit a\u00e9rien \u2014 Partie 3: Pompes \u2014 M\u00e9thode employant un \u00e9talage des microphones en parall\u00e9l\u00e9pip\u00e8de<\/b><\/p>\n<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\/iso\/\"><b>ISO<\/b><\/a><\/td>\n<td>1991-08<\/td>\n<td>16<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":616325,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[268,368,2634],"product_tag":[],"class_list":{"0":"post-616313","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-17-140-20","7":"product_cat-23-100-10","8":"product_cat-iso","10":"first","11":"instock","12":"sold-individually","13":"shipping-taxable","14":"purchasable","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/616313","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\/616325"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=616313"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=616313"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=616313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}