{"id":12040,"date":"2025-09-05T16:36:59","date_gmt":"2025-09-05T19:36:59","guid":{"rendered":"https:\/\/blog.wika.com\/pt\/?p=12040"},"modified":"2025-07-28T16:38:30","modified_gmt":"2025-07-28T19:38:30","slug":"medicao-de-pressao-diferencial-2","status":"publish","type":"post","link":"https:\/\/blog.wika.com\/pt\/geral\/medicao-de-pressao-diferencial-2\/","title":{"rendered":"Melhor juntos: as vantagens de usar dois transmissores de processo interconectados para medi\u00e7\u00e3o de press\u00e3o diferencial"},"content":{"rendered":"<p><strong><span data-contrast=\"auto\" xml:lang=\"PT-BR\" lang=\"PT-BR\" class=\"TextRun SCXW73896337 BCX8\"><span class=\"NormalTextRun SCXW73896337 BCX8\">O monitoramento do n\u00edvel de l\u00edquido atinge um novo patamar com a solu\u00e7\u00e3o inovadora da WIKA: um sistema que usa dois transmissores de processo interconectados para medi\u00e7\u00e3o de press\u00e3o diferencial. Esta configura\u00e7\u00e3o \u00e9 extremamente precisa, f\u00e1cil de instalar e usar, e n\u00e3o suscet\u00edvel a varia\u00e7\u00f5es de temperatura.<\/span><\/span><\/strong><\/p>\n<p><span data-contrast=\"auto\" xml:lang=\"PT-BR\" lang=\"PT-BR\" class=\"TextRun SCXW115589833 BCX8\"><span class=\"NormalTextRun SCXW115589833 BCX8\">Originalmente projetado para medir a press\u00e3o antes e depois que o fluido encontra uma interrup\u00e7\u00e3o, um transmissor de press\u00e3o diferencial tamb\u00e9m pode determinar\u202fos n\u00edveis de l\u00edquido calculando a press\u00e3o diferencial entre as fases l\u00edquida e gasosa do fluido dentro de um tanque fechado.\u202fO principal problema, no entanto, \u00e9 que o pequeno tubo (capilar) usado para conectar essas duas fases est\u00e1 sujeito \u00e0\u202fLei de Gay-Lussac: dentro de um sistema fechado, a press\u00e3o de um g\u00e1s \u00e9 diretamente proporcional \u00e0 sua temperatura. Em outras palavras, temperaturas mais altas levam a leituras de press\u00e3o mais altas do que o real\u202f(consulte a\u202f<\/span><\/span><a class=\"Hyperlink SCXW115589833 BCX8 local-link\" href=\"https:\/\/blog.wika.com\/us\/products\/level-products\/how-differential-pressure-transmitters-measure-level\/\" target=\"_blank\" rel=\"noreferrer noopener\"><span class=\"SCXW115589833 BCX8\"><span data-contrast=\"none\" xml:lang=\"PT-BR\" lang=\"PT-BR\" class=\"TextRun Underlined SCXW115589833 BCX8\"><span class=\"NormalTextRun SCXW115589833 BCX8\" data-ccp-charstyle=\"Hyperlink\">Parte 1 desta s\u00e9rie<\/span><\/span><\/span><\/a><span data-contrast=\"auto\" xml:lang=\"PT-BR\" lang=\"PT-BR\" class=\"TextRun SCXW115589833 BCX8\"><span class=\"NormalTextRun SCXW115589833 BCX8\">).<\/span><\/span><span class=\"EOP SCXW115589833 BCX8\" data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><strong><span data-contrast=\"auto\" xml:lang=\"PT-BR\" lang=\"PT-BR\" class=\"TextRun SCXW39287458 BCX8\"><span class=\"NormalTextRun SCXW39287458 BCX8\">Medi\u00e7\u00e3o de Press\u00e3o Diferencial com Dois Transmissores de Processo Interconectados<\/span><\/span><\/strong><\/p>\n<p><span data-contrast=\"auto\" xml:lang=\"PT-BR\" lang=\"PT-BR\" class=\"TextRun SCXW206192362 BCX8\"><span class=\"NormalTextRun SCXW206192362 BCX8\">A WIKA desenvolveu uma solu\u00e7\u00e3o para os desafios de flutua\u00e7\u00f5es de temperatura e leituras imprecisas. Nosso sistema inovativo <\/span><\/span><span data-contrast=\"auto\" xml:lang=\"PT-BR\" lang=\"PT-BR\" class=\"TextRun Highlight SCXW206192362 BCX8\"><span class=\"NormalTextRun SCXW206192362 BCX8\">utiliza<\/span><\/span><span data-contrast=\"auto\" xml:lang=\"PT-BR\" lang=\"PT-BR\" class=\"TextRun SCXW206192362 BCX8\"><span class=\"NormalTextRun SCXW206192362 BCX8\"> dois do mesmo transmissor <\/span><\/span><span data-contrast=\"auto\" xml:lang=\"PT-BR\" lang=\"PT-BR\" class=\"TextRun Highlight SCXW206192362 BCX8\"><span class=\"NormalTextRun SCXW206192362 BCX8\">d<\/span><span class=\"NormalTextRun SCXW206192362 BCX8\">e<\/span><\/span><span data-contrast=\"auto\" xml:lang=\"PT-BR\" lang=\"PT-BR\" class=\"TextRun SCXW206192362 BCX8\"><span class=\"NormalTextRun SCXW206192362 BCX8\"> processo, tal como\u202f<\/span><\/span><a class=\"Hyperlink SCXW206192362 BCX8 ext-link\" href=\"https:\/\/www.wika.com\/pt-br\/cpt_20_cpt_21.WIKA?highlightedText=CPT\" target=\"_blank\" rel=\"noreferrer noopener external nofollow\" onclick=\"this.target=&#039;_blank&#039;;\"><span data-contrast=\"none\" xml:lang=\"PT-BR\" lang=\"PT-BR\" class=\"TextRun Underlined SCXW206192362 BCX8\"><span class=\"NormalTextRun SCXW206192362 BCX8\" data-ccp-charstyle=\"Hyperlink\">CPT-2X\u202f<\/span><\/span><\/a><span data-contrast=\"auto\" xml:lang=\"PT-BR\" lang=\"PT-BR\" class=\"TextRun SCXW206192362 BCX8\"><span class=\"NormalTextRun SCXW206192362 BCX8\">ou\u202f<\/span><\/span><a class=\"Hyperlink SCXW206192362 BCX8 ext-link\" href=\"https:\/\/www.wika.com\/pt-br\/ipt_20_ipt_21.WIKA?highlightedText=ipt-\" target=\"_blank\" rel=\"noreferrer noopener external nofollow\" onclick=\"this.target=&#039;_blank&#039;;\"><span data-contrast=\"none\" xml:lang=\"PT-BR\" lang=\"PT-BR\" class=\"TextRun Underlined SCXW206192362 BCX8\"><span class=\"NormalTextRun SCXW206192362 BCX8\" data-ccp-charstyle=\"Hyperlink\">IPT-2X<\/span><\/span><\/a><span data-contrast=\"auto\" xml:lang=\"PT-BR\" lang=\"PT-BR\" class=\"TextRun SCXW206192362 BCX8\"><span class=\"NormalTextRun SCXW206192362 BCX8\">e os conecta por meio de um cabo de sinal.<\/span><\/span><\/p>\n\n      <div class=\"wp-caption alignright\" style=\"max-width:222px;\"><img decoding=\"async\" src=\"https:\/\/blog.wika.com\/pt\/files\/2025\/07\/figure-3-20200318105208.jpg\" \/><p class=\"wp-caption-text\">Figura 3: Medi\u00e7\u00e3o de n\u00edvel usando dois transmissores de processo interconectados<\/p><\/div>\n    \n<p><span data-contrast=\"auto\">Nesta configura\u00e7\u00e3o, o transmissor de processo subordinado mede a press\u00e3o do g\u00e1s (P<\/span><span data-contrast=\"auto\">1<\/span><span data-contrast=\"auto\">) e comunica essa leitura ao <\/span><span data-contrast=\"auto\">principal por meio de um barramento interno (Figura 3). O transmissor principal mede a press\u00e3o do l\u00edquido (P<\/span><span data-contrast=\"auto\">2<\/span><span data-contrast=\"auto\">) e, em seguida, calcula a diferen\u00e7a entre P<\/span><span data-contrast=\"auto\">1\u202f<\/span><span data-contrast=\"auto\">e P<\/span><span data-contrast=\"auto\">2<\/span><span data-contrast=\"auto\">. Usando essa diferen\u00e7a, bem como par\u00e2metros pr\u00e9-programados, como as vari\u00e1veis geom\u00e9tricas do tanque e a densidade espec\u00edfica do l\u00edquido, o transmissor principal \u00e9 capaz de determinar o volume e o n\u00edvel <\/span><span data-contrast=\"auto\">do l\u00edquido com precis\u00e3o<\/span><span data-contrast=\"auto\">. Em seguida, ele envia esse valor para uma sala de controle e\/ou o exibe no transmissor como um sinal digital ou anal\u00f3gico. O transmissor principal tamb\u00e9m parametriza e <\/span><span data-contrast=\"auto\">fornece a alimenta\u00e7\u00e3o el\u00e9trica ao<\/span><span data-contrast=\"auto\"> subordinado.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Sem a necessidade de usar capilares, este sistema lida com grandes flutua\u00e7\u00f5es de temperatura com facilidade. <\/span><span data-contrast=\"auto\">Sua precis\u00e3o<\/span><span data-contrast=\"auto\"> \u00e9 de at\u00e9 0,05% do intervalo definido. Al\u00e9m disso, o cabo de sinal n\u00e3o \u00e9 suscet\u00edvel a falhas relacionadas a capilares.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><b><span data-contrast=\"auto\">Transmissores de Press\u00e3o vs. Transmissores de <\/span><\/b><b><span data-contrast=\"auto\">Processo para Medi\u00e7\u00e3o de Press\u00e3o Diferencial<\/span><\/b><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Em teoria, este sistema poderia funcionar com transmissores de press\u00e3o, bem como transmissores de processo. No entanto, o uso de transmissores de press\u00e3o exigiria v\u00e1rios componentes adicionais:<\/span><\/p>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Um dispositivo para realizar c\u00e1lculos<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"2\" data-aria-level=\"1\"><span data-contrast=\"auto\">Uma segunda unidade de tens\u00e3o para alimentar o subordinado<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"3\" data-aria-level=\"1\"><span data-contrast=\"auto\">Duas entradas de press\u00e3o<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"auto\">Como os transmissores de processo j\u00e1 possuem todos os componentes acima, \u00e9 um sistema mais simples e econ\u00f4mico.<\/span><\/p>\n<p><b><span data-contrast=\"auto\">Vantagens do uso de transmissores de processo para medi\u00e7\u00e3o de press\u00e3o diferencial<\/span><\/b><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">A solu\u00e7\u00e3o inteligente da WIKA n\u00e3o apenas minimiza a sensibilidade \u00e0s varia\u00e7\u00f5es de temperatura, mas tamb\u00e9m oferece outros benef\u00edcios importantes:<\/span><\/p>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Tempo de resposta mais r\u00e1pido.<\/span><\/b><span data-contrast=\"auto\">\u202fComo n\u00e3o h\u00e1 capilares, n\u00e3o h\u00e1 necessidade de executar testes a montante para verificar se todas as bolsas de ar foram eliminadas das linhas de impulso e press\u00e3o.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"2\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Substitui\u00e7\u00e3o mais f\u00e1cil e barata.\u202f<\/span><\/b><span data-contrast=\"auto\">Em caso de mau funcionamento, apenas o transmissor de processo defeituoso deve ser substitu\u00eddo. Ao usar transmissores de press\u00e3o diferencial tradicionais, todo o sistema deve ser substitu\u00eddo.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"3\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Amplitude de sinal otimizada.\u202f<\/span><\/b><span data-contrast=\"auto\">Desde que o transmissor de processo n\u00e3o seja <\/span><span data-contrast=\"auto\">ajustado em um range<\/span><span data-contrast=\"auto\"> al\u00e9m do limite recomendado (normalmente inferior a 5:1), os intervalos podem ser configurados individualmente, dimensionando a faixa de medi\u00e7\u00e3o de cada transmissor para os valores realmente relevantes para o processo.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"4\" data-aria-level=\"1\"><b><span data-contrast=\"auto\">Maior versatilidade.\u202f<\/span><\/b><span data-contrast=\"auto\">Este sistema \u00e9 ideal para l\u00edquidos homog\u00eaneos, bem como meios heterog\u00eaneos\/diversos.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><b><span data-contrast=\"auto\">Medi\u00e7\u00e3o de N\u00edvel em Diversos Meios<\/span><\/b><\/p>\n<p><span data-contrast=\"auto\" xml:lang=\"PT-BR\" lang=\"PT-BR\" class=\"TextRun SCXW57836501 BCX8\"><span class=\"NormalTextRun SCXW57836501 BCX8\">Um sistema que usa dois transmissores de processo para medi\u00e7\u00e3o de press\u00e3o diferencial \u00e9 ideal para medir o n\u00edvel em meios mistos. Na fabrica\u00e7\u00e3o de suco de frutas, por exemplo, esse tipo de sistema pode determinar a propor\u00e7\u00e3o concentrado-\u00e1gua com base na densidade e, portanto, na mudan\u00e7a de press\u00e3o. Outro exemplo s\u00e3o os tanques de por\u00e3o <\/span><\/span><span data-contrast=\"auto\" xml:lang=\"PT-BR\" lang=\"PT-BR\" class=\"TextRun Highlight SCXW57836501 BCX8\"><span class=\"NormalTextRun SCXW57836501 BCX8\">de<\/span><\/span><span data-contrast=\"auto\" xml:lang=\"PT-BR\" lang=\"PT-BR\" class=\"TextRun SCXW57836501 BCX8\"><span class=\"NormalTextRun SCXW57836501 BCX8\"> navios, onde a \u00e1gua se mistura com lubrificantes e outros fluidos. Os dois transmissores de processo conectados podem medir com precis\u00e3o a press\u00e3o diferencial devido \u00e0 densidade do meio e, em seguida, indicar quando o n\u00edvel da \u00e1gua atingiu o limite definido.<\/span><\/span><\/p>\n<p><b><span data-contrast=\"auto\">WIKA: Um especialista em medi\u00e7\u00e3o de press\u00e3o diferencial<\/span><\/b><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">A<a href=\"https:\/\/www.wika.com\/pt-br\/pagina_inicial.WIKA\" target=\"_blank\" rel=\"noopener external nofollow\" class=\"ext-link\" onclick=\"this.target=&#039;_blank&#039;;\"> WIKA<\/a> \u00e9 l\u00edder global na fabrica\u00e7\u00e3o de instrumentos de medi\u00e7\u00e3o, mas fazemos mais do que isso. Nossos engenheiros procuram constantemente maneiras inovadoras de resolver desafios dif\u00edceis. Este sistema de uso de dois transmissores de processo interconectados para monitorar com precis\u00e3o os n\u00edveis de l\u00edquido \u00e9 simplesmente uma das muitas solu\u00e7\u00f5es que nossas equipes projetaram para aumentar a precis\u00e3o e, ao mesmo tempo, economizar tempo e dinheiro dos clientes.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Voc\u00ea deve medir o n\u00edvel usando um indicador de n\u00edvel, um transmissor de press\u00e3o diferencial cl\u00e1ssico ou dois transmissores de processo interconectados? Cada <\/span><span data-contrast=\"auto\">aplica\u00e7\u00e3o<\/span><span data-contrast=\"auto\"> tem suas vari\u00e1veis exclusivas que afetam o tipo de instrumento que voc\u00ea escolhe. Para obter ajuda para determinar qual solu\u00e7\u00e3o \u00e9 a mais eficiente e econ\u00f4mica para o seu processo, entre em <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> com os especialistas da WIKA.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>O monitoramento do n\u00edvel de l\u00edquido atinge um novo patamar com a solu\u00e7\u00e3o inovadora da WIKA: um sistema que usa dois transmissores de processo interconectados para medi\u00e7\u00e3o de press\u00e3o diferencial. Esta configura\u00e7\u00e3o \u00e9 extremamente precisa, f\u00e1cil de instalar e usar, e n\u00e3o suscet\u00edvel a varia\u00e7\u00f5es de temperatura. Originalmente projetado para medir a press\u00e3o antes e [&hellip;]<\/p>\n","protected":false},"author":421,"featured_media":12044,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1,13,8,6,16],"tags":[120,653,82,301,605],"class_list":["post-12040","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-geral","category-know-how","category-produtos-nivel","category-produtos-pressao","category-produtos","tag-medicao-nivel","tag-medicao-de-pressao-diferencial","tag-transmissor-pressao","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>Transmissores de processo para medi\u00e7\u00e3o de press\u00e3o diferencial<\/title>\n<meta name=\"description\" content=\"O monitoramento do n\u00edvel de l\u00edquido atinge 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