{"id":12152,"date":"2026-01-02T11:00:55","date_gmt":"2026-01-02T14:00:55","guid":{"rendered":"https:\/\/blog.wika.com\/pt\/?p=12152"},"modified":"2025-11-07T09:02:50","modified_gmt":"2025-11-07T12:02:50","slug":"medicao-com-dois-flutuadores","status":"publish","type":"post","link":"https:\/\/blog.wika.com\/pt\/geral\/medicao-com-dois-flutuadores\/","title":{"rendered":"Medi\u00e7\u00e3o de interface com dois flutuadores"},"content":{"rendered":"<p><strong>Fala-se de uma medi\u00e7\u00e3o de interface quando dois l\u00edquidos diferentes em um tanque ou recipiente s\u00e3o medidos independentemente um do outro. Essa medi\u00e7\u00e3o de interface \u00e9 sempre \u00fatil quando os l\u00edquidos n\u00e3o s\u00e3o misc\u00edveis entre si, como \u00e9 o caso do \u00f3leo e da \u00e1gua, por exemplo.<\/strong><\/p>\n\n      <div class=\"wp-caption alignleft\" style=\"max-width:396px;\"><img decoding=\"async\" src=\"https:\/\/blog.wika.com\/pt\/files\/2025\/11\/interface_oel_wasser.jpg\" \/><p class=\"wp-caption-text\">Exemplo de uma medi\u00e7\u00e3o de interface: \u00f3leo na parte superior e \u00e1gua na parte inferior<\/p><\/div>\n    \n<p>Na pr\u00e1tica, a tecnologia de medi\u00e7\u00e3o de n\u00edvel baseada em flutua\u00e7\u00e3o \u00e9 frequentemente usada para medi\u00e7\u00e3o de interface. Dois flutuadores s\u00e3o ajustados \u00e0s respectivas densidades dos dois l\u00edquidos. Isso resulta em uma medi\u00e7\u00e3o de interface simples, mas muito confi\u00e1vel.<\/p>\n<p>Uma das principais vantagens deste m\u00e9todo de medi\u00e7\u00e3o \u00e9 que n\u00e3o \u00e9 necess\u00e1rio fazer ajustes demorados no sensor de n\u00edvel. Al\u00e9m disso, a medi\u00e7\u00e3o de n\u00edvel baseada em flutua\u00e7\u00e3o \u00e9 f\u00e1cil de instalar e praticamente livre de manuten\u00e7\u00e3o.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Conhecida por sua robustez: a cadeia reed.<\/strong><\/p>\n\n      <div class=\"wp-caption alignright\" style=\"max-width:189px;\"><img decoding=\"async\" src=\"https:\/\/blog.wika.com\/pt\/files\/2025\/11\/flr_wika_ts-doublet15_trennschicht_181x471.png\" \/><p class=\"wp-caption-text\">Medi\u00e7\u00e3o de interface com dois flutuadores e dois transmissores de cabe\u00e7ote<\/p><\/div>\n    \n<p>Em aplica\u00e7\u00f5es com altos requisitos de choque e vibra\u00e7\u00e3o, a cadeia reed se destacou como uma tecnologia comprovada de medi\u00e7\u00e3o de n\u00edvel. O sistema magn\u00e9tico dentro do flutuador aciona os contatos da cadeia, que est\u00e3o localizados dentro do tubo guia em uma cadeia de medi\u00e7\u00e3o de resist\u00eancia. A conex\u00e3o em s\u00e9rie dos contatos e resistores gera um valor de resist\u00eancia vari\u00e1vel, que muda proporcionalmente ao n\u00edvel. Um transmissor montado no cabe\u00e7ote converte o valor da resist\u00eancia medida em um sinal de sa\u00edda 4 &#8230; 20mA\/HART<sup>\u00ae<\/sup>. Dependendo da escolha do transmissor de cabe\u00e7ote, outros sinais de sa\u00edda, como PROFIBUS<sup>\u00a9<\/sup> ou FOUNDATION\u2122 Fieldbus, tamb\u00e9m s\u00e3o poss\u00edveis.<\/p>\n<p>Esta configura\u00e7\u00e3o padr\u00e3o pode ser modificada com muita facilidade para permitir o monitoramento dos n\u00edveis de dois l\u00edquidos ao mesmo tempo. Em aplica\u00e7\u00f5es de interface, um segundo transmissor de cabe\u00e7ote pode ser usado para avaliar a posi\u00e7\u00e3o de um segundo flutuador. Isso significa que um instrumento de medi\u00e7\u00e3o com uma cadeia reed pode monitorar dois flutuadores por meio de dois flutuadores independentes de sinal de sa\u00eddas 4 &#8230; 20mA\/HART<sup>\u00ae<\/sup>. Assim, monitorar aplica\u00e7\u00f5es de interface com dois flutuadores n\u00e3o \u00e9 problema para o transmissor de n\u00edvel reed.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Nota<\/strong><br \/>\nMais informa\u00e7\u00f5es sobre o tema da medi\u00e7\u00e3o de n\u00edvel com flutuadores podem ser encontradas no\u00a0<a href=\"https:\/\/www.wika.com\/pt-br\/nivel.WIKA\" target=\"_blank\" rel=\"noopener external nofollow\" class=\"ext-link\" onclick=\"this.target=&#039;_blank&#039;;\">Site da WIKA<\/a>. Se voc\u00ea tiver alguma d\u00favida, seu\u00a0<a href=\"https:\/\/www.wika.com\/pt-br\/contato.WIKA\" target=\"_blank\" rel=\"noopener external nofollow\" class=\"ext-link\" onclick=\"this.target=&#039;_blank&#039;;\">contato<\/a>\u00a0ter\u00e1 prazer em ajud\u00e1-lo.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Fala-se de uma medi\u00e7\u00e3o de interface quando dois l\u00edquidos diferentes em um tanque ou recipiente s\u00e3o medidos independentemente um do outro. Essa medi\u00e7\u00e3o de interface \u00e9 sempre \u00fatil quando os l\u00edquidos n\u00e3o s\u00e3o misc\u00edveis entre si, como \u00e9 o caso do \u00f3leo e da \u00e1gua, por exemplo. Na pr\u00e1tica, a tecnologia de medi\u00e7\u00e3o de n\u00edvel [&hellip;]<\/p>\n","protected":false},"author":421,"featured_media":12155,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1,8,16],"tags":[120,91,301,605],"class_list":["post-12152","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-geral","category-produtos-nivel","category-produtos","tag-medicao-nivel","tag-sonda-nivel","tag-wika","tag-wika-smart-in-sensing"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Medi\u00e7\u00e3o de interface com dois flutuadores - WIKA blog<\/title>\n<meta name=\"description\" content=\"A medi\u00e7\u00e3o de n\u00edvel baseada em flutua\u00e7\u00e3o \u00e9 muito usada para medi\u00e7\u00e3o de interface, utilizando dois flutuadores. 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