{"id":616298,"date":"2024-11-05T23:19:26","date_gmt":"2024-11-05T23:19:26","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/iso-44072002\/"},"modified":"2024-11-05T23:19:26","modified_gmt":"2024-11-05T23:19:26","slug":"iso-44072002","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/iso\/iso-44072002\/","title":{"rendered":"ISO 4407:2002"},"content":{"rendered":"<p>La pr\u00e9sente Norme internationale d\u00e9finit des m\u00e9thodes permettant de d\u00e9terminer le niveau de pollution particulaire des liquides utilis\u00e9s dans les syst\u00e8mes hydrauliques, par comptage au microscope optique du nombre de particules d\u00e9pos\u00e9es \u00e0 la surface d&#039;une membrane filtrante. Elle traite du comptage des particules par deux m\u00e9thodes manuelle et par analyse d&#039;image, en utilisant soit une lumi\u00e8re transmise, soit une lumi\u00e8re incidente.<\/p>\n<p>Ces m\u00e9thodes permettent de classer et de d\u00e9nombrer des particules de taille sup\u00e9rieure ou \u00e9gale \u00e0 2 microm\u00e8tres, mais la r\u00e9solution et l&#039;exactitude des r\u00e9sultats d\u00e9pend du syst\u00e8me optique utilis\u00e9 et des aptitudes de l&#039;op\u00e9rateur.<\/p>\n<p>Tous les liquides hydrauliques qui pr\u00e9sentent un large \u00e9ventail de niveaux de pollution sont analysables selon la pr\u00e9sente Norme internationale. Cependant, l&#039;incertitude de comptage aux plus grandes tailles de particules augmente si le volume filtr\u00e9 est r\u00e9duit pour permettre le d\u00e9nombrement des particules de plus petites tailles, lorsqu&#039;on observe un l\u00e9ger pr\u00e9cipit\u00e9 ou que la concentration des particules est \u00e9lev\u00e9e.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Transmissions hydrauliques \u2014 Pollution des fluides \u2014 D\u00e9termination de la pollution particulaire par comptage au microscope optique<\/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>2002-04<\/td>\n<td>22<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":616314,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[372,2634],"product_tag":[],"class_list":{"0":"post-616298","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-23-100-60","7":"product_cat-iso","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/616298","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\/616314"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=616298"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=616298"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=616298"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}