{"id":8465,"date":"2018-08-23T09:21:54","date_gmt":"2018-08-23T12:21:54","guid":{"rendered":"https:\/\/blog.wika.com\/pt\/\/?p=8465"},"modified":"2024-07-22T09:18:36","modified_gmt":"2024-07-22T12:18:36","slug":"qual-e-a-diferenca-entre-as-funcoes-de-comutacao-histerese-e-janela-em-pressostatos","status":"publish","type":"post","link":"https:\/\/blog.wika.com\/pt\/know-how\/qual-e-a-diferenca-entre-as-funcoes-de-comutacao-histerese-e-janela-em-pressostatos\/","title":{"rendered":"Qual \u00e9 a diferen\u00e7a entre as fun\u00e7\u00f5es de comuta\u00e7\u00e3o histerese e janela em pressostatos?"},"content":{"rendered":"<p>Pressostatos eletr\u00f4nicos e mec\u00e2nicos s\u00e3o utilizados para o monitoramento de valores-limite cr\u00edticos e, portanto, normalmente cumprem uma fun\u00e7\u00e3o de seguran\u00e7a. Para atender a essa fun\u00e7\u00e3o de seguran\u00e7a, os contatos oferecem duas fun\u00e7\u00f5es alternativas de comuta\u00e7\u00e3o: as fun\u00e7\u00f5es histerese e janela.<\/p>\n<p>Em geral, estas duas fun\u00e7\u00f5es de comuta\u00e7\u00e3o diferem uma da outra de tal forma que a fun\u00e7\u00e3o histerese monitora um valor limite e a fun\u00e7\u00e3o janela monitora um intervalo definido. Assim, a fun\u00e7\u00e3o de comuta\u00e7\u00e3o histerese monitora se um valor cr\u00edtico (ponto de comuta\u00e7\u00e3o) foi excedido. J\u00e1 a fun\u00e7\u00e3o de comuta\u00e7\u00e3o janela monitora se o processo monitorado est\u00e1 dentro do intervalo definido (dentro dos limites superior e inferior = \u201cjanela alta\u201d e \u201cjanela baixa\u201d), ou se este intervalo definido foi excedido acima ou abaixo. Independentemente da defini\u00e7\u00e3o da fun\u00e7\u00e3o de comuta\u00e7\u00e3o, o comutador altera sempre o estado de comuta\u00e7\u00e3o (por exemplo, de ativo para inativo ou de aberto para fechado) quando um valor limite \u00e9 excedido ou o intervalo definido \u00e9 excedido acima ou abaixo.<\/p>\n<p>Na pr\u00e1tica, o usu\u00e1rio deve primeiro decidir, com base em sua fun\u00e7\u00e3o de monitoramento espec\u00edfica, qual fun\u00e7\u00e3o de comuta\u00e7\u00e3o deseja. Enquanto a fun\u00e7\u00e3o de comuta\u00e7\u00e3o histerese \u00e9 inclu\u00edda em cada chave (seja mec\u00e2nica ou eletr\u00f4nica, e seja a vari\u00e1vel de press\u00e3o, temperatura, n\u00edvel ou vaz\u00e3o), a fun\u00e7\u00e3o de comuta\u00e7\u00e3o janela \u00e9 configur\u00e1vel somente em pressostatos eletr\u00f4nicos. No caso de contatos mec\u00e2nicos, a histerese j\u00e1 \u00e9 pr\u00e9-definida pelo projeto, enquanto no caso de comutadores eletr\u00f4nicos, ela tamb\u00e9m pode ser configurada pelo usu\u00e1rio final.<\/p>\n<p>Devido \u00e0 import\u00e2ncia hist\u00f3rica dos contatos mec\u00e2nicos e \u00e0 sua utiliza\u00e7\u00e3o cont\u00ednua em aplica\u00e7\u00f5es simples e muitas vezes sens\u00edveis aos custos, a fun\u00e7\u00e3o de comuta\u00e7\u00e3o histerese continua a ser a op\u00e7\u00e3o mais importante e amplamente utilizada para monitorizar pontos de refer\u00eancia cr\u00edticos. Somente com a introdu\u00e7\u00e3o de <a href=\"https:\/\/www.wika.com\/pt-br\/psd_4.WIKA?highlightedText=psd-30\" target=\"_blank\" rel=\"noopener external nofollow\" class=\"ext-link\" onclick=\"this.target=&#039;_blank&#039;;\">pressostatos eletr\u00f4nicos, especialmente pressostatos com displays integrados e bot\u00f5es de controle<\/a> para configura\u00e7\u00e3o local, a fun\u00e7\u00e3o de comuta\u00e7\u00e3o janela se tornou amplamente utilizada.<\/p>\n<p>Sua <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;;\">pessoa de contato<\/a> ter\u00e1 o prazer em lhe ajudar na escolha do pressostato adequado.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pressostatos eletr\u00f4nicos e mec\u00e2nicos s\u00e3o utilizados para o monitoramento de valores-limite cr\u00edticos e, portanto, normalmente cumprem uma fun\u00e7\u00e3o de seguran\u00e7a. Para atender a essa fun\u00e7\u00e3o de seguran\u00e7a, os contatos oferecem duas fun\u00e7\u00f5es alternativas de comuta\u00e7\u00e3o: as fun\u00e7\u00f5es histerese e janela. Em geral, estas duas fun\u00e7\u00f5es de comuta\u00e7\u00e3o diferem uma da outra de tal forma que [&hellip;]<\/p>\n","protected":false},"author":145,"featured_media":8466,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13],"tags":[123,137,111,94,233],"class_list":["post-8465","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-know-how","tag-exatidao","tag-histerese","tag-janela","tag-pressostato","tag-saida-chaveamento"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Fun\u00e7\u00f5es de comuta\u00e7\u00e3o histerese - WIKA blog<\/title>\n<meta name=\"description\" content=\"Pressostatos eletr\u00f4nicos e mec\u00e2nicos s\u00e3o utilizados para o monitoramento de valores-limite cr\u00edticos e, cumprem uma fun\u00e7\u00e3o de seguran\u00e7a.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.wika.com\/pt\/know-how\/qual-e-a-diferenca-entre-as-funcoes-de-comutacao-histerese-e-janela-em-pressostatos\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fun\u00e7\u00f5es de comuta\u00e7\u00e3o histerese - 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