{"id":760,"date":"2010-04-20T12:48:15","date_gmt":"2010-04-20T10:48:15","guid":{"rendered":"https:\/\/blog.wika.com\/de\/?p=760"},"modified":"2021-11-30T14:54:27","modified_gmt":"2021-11-30T13:54:27","slug":"4-20-ma-2-leiter-3-leiter","status":"publish","type":"post","link":"https:\/\/blog.wika.com\/de\/know-how\/4-20-ma-2-leiter-3-leiter\/","title":{"rendered":"Unterschied 4-20 mA in 2-Leiter und 3-Leiter bei Drucksensoren"},"content":{"rendered":"<p>Worin besteht eigentlich der Unterschied zwischen dem <a title=\"Analoge Ausgangssignale 1: 4 \u2026 20 mA\" href=\"https:\/\/blog.wika.com\/de\/know-how\/analoge-ausgangssignale-420-ma\/\">Ausgangssignal 4-20 mA<\/a> in 2- und in 3-Leitertechnik? Ganz praktisch l\u00e4sst sich diese Frage am einfachsten aus Sicht des Anwenders beantworten:<\/p>\n<p>Ein Ausgangssignal in 2-Leitertechnik bedeutet:<\/p>\n<ul>\n<li>einen geringeren Verdrahtungsaufwand<\/li>\n<li>einen besseren EMV-Schutz, weil \u00a0St\u00f6rungen leichter zu filtern sind<\/li>\n<li>einen h\u00f6heren Schutz vor Verdrahtungsfehlern<\/li>\n<\/ul>\n<p>Der einzige Vorteil der 3-Leitertechnik ist, dass gr\u00f6\u00dfere B\u00fcrden m\u00f6glich sind, d. h. die Stromschleife auch an einem Messger\u00e4t mit relativ hohem Eingangswiderstand betrieben werden kann.<\/p>\n<p>Fazit: Ausgenommen f\u00fcr den Fall, dass eine gro\u00dfe B\u00fcrde erforderlich ist, bietet 4-20 mA in 2-Leitertechnik \u00a0dem Anwender deutliche Vorteile &#8211; auch gegen\u00fcber anderen Signalen, wie z. B. 0-10 V.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Worin besteht eigentlich der Unterschied zwischen dem Ausgangssignal 4-20 mA in 2- und in 3-Leitertechnik? Ganz praktisch l\u00e4sst sich diese Frage am einfachsten aus Sicht des Anwenders beantworten: Ein Ausgangssignal in 2-Leitertechnik bedeutet: einen geringeren Verdrahtungsaufwand einen besseren EMV-Schutz, weil \u00a0St\u00f6rungen leichter zu filtern sind einen h\u00f6heren Schutz vor Verdrahtungsfehlern Der einzige Vorteil der 3-Leitertechnik [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":4926,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[393],"tags":[331,95],"class_list":["post-760","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-know-how","tag-drucksensor","tag-elektrischer-anschluss"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>4-20 mA in 2-Leiter &amp; 3-Leiter bei Drucksensoren - WIKA-Blog<\/title>\n<meta name=\"description\" content=\"Worin besteht eigentlich der Unterschied zwischen dem Ausgangssignal 4-20 mA in 2- und in 3-Leitertechnik? 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