{"id":1026,"date":"2015-07-20T17:48:20","date_gmt":"2015-07-20T17:48:20","guid":{"rendered":"http:\/\/www.horter.de\/blog\/?p=1026"},"modified":"2026-01-20T20:41:25","modified_gmt":"2026-01-20T20:41:25","slug":"20ma-sensor-an-i2c-analogkarte","status":"publish","type":"post","link":"https:\/\/www.horter.de\/blog\/20ma-sensor-an-i2c-analogkarte\/","title":{"rendered":"20mA Sensor an I2C-Analogkarten"},"content":{"rendered":"\n<p>Industriesensoren mit <strong>standardisierten Ausgangssignalen wie 4\u201320 mA und 0\u201310 V<\/strong> sind aus der <strong>Automatisierungs-, Mess- und Steuerungstechnik<\/strong> nicht wegzudenken. Sie erm\u00f6glichen eine <strong>zuverl\u00e4ssige, st\u00f6rsichere \u00dcbertragung von Messwerten<\/strong> \u00fcber gr\u00f6\u00dfere Distanzen und sind hersteller\u00fcbergreifend kompatibel. Ob <strong>Temperatur-, Druck-, F\u00fcllstands-, Feuchte- oder Durchflusssensoren<\/strong> \u2013 viele industrielle Sensoren setzen auf diese analogen Standardschnittstellen, um Prozessdaten robust und pr\u00e4zise bereitzustellen.<\/p>\n\n\n\n<p>F\u00fcr die Weiterverarbeitung in <strong>Embedded-Systemen, Mikrocontroller-Projekten oder IoT-Anwendungen<\/strong> werden diese Signale h\u00e4ufig \u00fcber <strong>Analog-Eingangsmodule<\/strong> digitalisiert. In diesem Artikel zeigen wir, wie sich <strong>4\u201320 mA- und 0\u201310 V-Sensoren<\/strong> korrekt an <strong>I\u00b2C-f\u00e4hige Analog-Eingangskarten<\/strong> anschlie\u00dfen lassen, worauf bei der <strong>Signalaufbereitung, Strom-\/Spannungswandlung und Skalierung<\/strong> zu achten ist und welche typischen Fehlerquellen vermieden werden sollten.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sensoren an der analogen Eingangskarte I2HAE oder I2AE8<\/h2>\n\n\n<p>Um einen 0-20mA oder 4-20mA Sensor an unseren I2C-Analogkarten zu betrieben muss das 20mA-Signal mit einem Widerstand 500 Ohm in ein Spannungssignal umgewandelt werden.<\/p>\n<p>Wenn kein 500 Ohm Widerstand zur Hand ist k\u00f6nnen\u00a0auch zwei Widerst\u00e4nde a 1kOhm parallel geschaltet werden.<\/p>\n<p>Im <a href=\"https:\/\/www.horter-shop.de\">Onlineshop<\/a> gibt es 500,0 Ohm Widerst\u00e4nde mit 0,1% Toleranz als Zubeh\u00f6r zu den Analog-Eingangskarten<\/p>\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.horter.de\/blog\/wp-content\/uploads\/2015\/07\/20mA-Sensor.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"728\" height=\"443\" src=\"https:\/\/www.horter.de\/blog\/wp-content\/uploads\/2015\/07\/20mA-Sensor.jpg\" alt=\"\" class=\"wp-image-1027\" srcset=\"https:\/\/www.horter.de\/blog\/wp-content\/uploads\/2015\/07\/20mA-Sensor.jpg 728w, https:\/\/www.horter.de\/blog\/wp-content\/uploads\/2015\/07\/20mA-Sensor-300x183.jpg 300w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><\/a><figcaption class=\"wp-element-caption\">4-20mA Sensoren an einer Analogen Eingangskarte 0..10V<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.horter.de\/blog\/wp-content\/uploads\/2015\/07\/4-20mA_Beispiel-1.png\"><img loading=\"lazy\" decoding=\"async\" width=\"578\" height=\"842\" src=\"https:\/\/www.horter.de\/blog\/wp-content\/uploads\/2015\/07\/4-20mA_Beispiel-1.png\" alt=\"4-20mA Sensoren an einer I2C-Analogkarte\" class=\"wp-image-28710\" srcset=\"https:\/\/www.horter.de\/blog\/wp-content\/uploads\/2015\/07\/4-20mA_Beispiel-1.png 578w, https:\/\/www.horter.de\/blog\/wp-content\/uploads\/2015\/07\/4-20mA_Beispiel-1-206x300.png 206w, https:\/\/www.horter.de\/blog\/wp-content\/uploads\/2015\/07\/4-20mA_Beispiel-1-103x150.png 103w\" sizes=\"auto, (max-width: 578px) 100vw, 578px\" \/><\/a><figcaption class=\"wp-element-caption\">So kann ein 2-Draht F\u00fchler 4-20mA an die Eingangskarte angeschlossen werden<\/figcaption><\/figure>\n\n\n\n\n\n<h2 class=\"wp-block-heading\">Sensoren an der analogen Eingangskarte I2AE18<\/h2>\n\n\n<p>Bei unserer analogen Eingangskarte mit dem MCP3424 ist der 500 Ohm Widerstand schon auf der Platine mit drauf. Dieser kann mit dem Jumper &#8222;mA&#8220; aktiviert werden.\u00a0<\/p>\n<p>Bei dieser Karte kann also auf den externen Widerstand verzichtet werden.<\/p>\n<p>Hier ein Anschlussbild mit einem Mischbetrieb von<\/p>\n<ul>\n<li>0-20mA 2-Draht (2-Wire)<\/li>\n<li>0-20mA 4-Draht (4-Wire)<\/li>\n<li>0-10V\u00a0<\/li>\n<\/ul>\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.horter.de\/blog\/wp-content\/uploads\/2015\/07\/4-20mA_Beispiel_I2AE18.png\"><img loading=\"lazy\" decoding=\"async\" width=\"448\" height=\"710\" src=\"https:\/\/www.horter.de\/blog\/wp-content\/uploads\/2015\/07\/4-20mA_Beispiel_I2AE18.png\" alt=\"4-20mA Sensoren an einer I2C-Analogkarte 12-18 Bit\" class=\"wp-image-28715\" srcset=\"https:\/\/www.horter.de\/blog\/wp-content\/uploads\/2015\/07\/4-20mA_Beispiel_I2AE18.png 448w, https:\/\/www.horter.de\/blog\/wp-content\/uploads\/2015\/07\/4-20mA_Beispiel_I2AE18-189x300.png 189w, https:\/\/www.horter.de\/blog\/wp-content\/uploads\/2015\/07\/4-20mA_Beispiel_I2AE18-95x150.png 95w\" sizes=\"auto, (max-width: 448px) 100vw, 448px\" \/><\/a><figcaption class=\"wp-element-caption\">4-20mA Sensoren an einer I2C-Analogkarte MCP3424 12-18 Bit<\/figcaption><\/figure>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Industriesensoren mit standardisierten Ausgangssignalen wie 4\u201320 mA und 0\u201310 V sind aus der Automatisierungs-, Mess- und Steuerungstechnik nicht wegzudenken. Sie erm\u00f6glichen eine zuverl\u00e4ssige, st\u00f6rsichere \u00dcbertragung von Messwerten \u00fcber gr\u00f6\u00dfere Distanzen und sind hersteller\u00fcbergreifend kompatibel. Ob Temperatur-, Druck-, F\u00fcllstands-, Feuchte- oder&#8230; <a class=\"continue-reading-link\" href=\"https:\/\/www.horter.de\/blog\/20ma-sensor-an-i2c-analogkarte\/\">mehr lesen<\/a><\/p>\n","protected":false},"author":3,"featured_media":1160,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,256],"tags":[125,127,124,128,126,130,131,132,114,119,123,129],"class_list":["post-1026","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-i2c-baugruppen","category-raspberry-sps","tag-0-20ma","tag-0-20-ma","tag-4-20-ma","tag-4-20ma","tag-analogeingang","tag-drucksensor","tag-feuchtesensor","tag-i2c-analogkarte","tag-i2c-bus","tag-sensor","tag-stromsignal","tag-temperatursensor"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>20mA Sensor an I2C-Analogkarten - Horter &amp; Kalb Blog<\/title>\n<meta name=\"description\" content=\"So schlie\u00dfen Sie Industriesensoren mit 4\u201320 mA oder 0\u201310 V korrekt an I2C-Analog-Eingangskarten an \u2013 praxisnah erkl\u00e4rt mit Beispielen.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.horter.de\/blog\/20ma-sensor-an-i2c-analogkarte\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"20mA Sensor an I2C-Analogkarten - Horter &amp; Kalb Blog\" \/>\n<meta property=\"og:description\" content=\"So schlie\u00dfen Sie Industriesensoren mit 4\u201320 mA oder 0\u201310 V korrekt an I2C-Analog-Eingangskarten an \u2013 praxisnah erkl\u00e4rt mit Beispielen.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.horter.de\/blog\/20ma-sensor-an-i2c-analogkarte\/\" \/>\n<meta property=\"og:site_name\" content=\"Horter &amp; Kalb Blog\" \/>\n<meta property=\"article:published_time\" content=\"2015-07-20T17:48:20+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-01-20T20:41:25+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.horter.de\/blog\/wp-content\/uploads\/2015\/07\/4-20mA_Beispiel.png\" \/>\n\t<meta property=\"og:image:width\" content=\"578\" \/>\n\t<meta property=\"og:image:height\" content=\"842\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"JH\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Verfasst von\" \/>\n\t<meta name=\"twitter:data1\" content=\"JH\" \/>\n\t<meta name=\"twitter:label2\" content=\"Gesch\u00e4tzte Lesezeit\" \/>\n\t<meta name=\"twitter:data2\" content=\"3\u00a0Minuten\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.horter.de\/blog\/20ma-sensor-an-i2c-analogkarte\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.horter.de\/blog\/20ma-sensor-an-i2c-analogkarte\/\"},\"author\":{\"name\":\"JH\",\"@id\":\"https:\/\/www.horter.de\/blog\/#\/schema\/person\/a8a4c3c5d3167dce7c7d31df6088b5d2\"},\"headline\":\"20mA Sensor an I2C-Analogkarten\",\"datePublished\":\"2015-07-20T17:48:20+00:00\",\"dateModified\":\"2026-01-20T20:41:25+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.horter.de\/blog\/20ma-sensor-an-i2c-analogkarte\/\"},\"wordCount\":279,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.horter.de\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.horter.de\/blog\/20ma-sensor-an-i2c-analogkarte\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.horter.de\/blog\/wp-content\/uploads\/2015\/07\/4-20mA_Beispiel.png\",\"keywords\":[\"0-20mA\",\"0..20 mA\",\"4-20 mA\",\"4..20mA\",\"Analogeingang\",\"Drucksensor\",\"Feuchtesensor\",\"I2C-Analogkarte\",\"I2C-Bus\",\"Sensor\",\"Stromsignal\",\"Temperatursensor\"],\"articleSection\":[\"I2C-Baugruppen\",\"Raspberry-SPS\"],\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.horter.de\/blog\/20ma-sensor-an-i2c-analogkarte\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.horter.de\/blog\/20ma-sensor-an-i2c-analogkarte\/\",\"url\":\"https:\/\/www.horter.de\/blog\/20ma-sensor-an-i2c-analogkarte\/\",\"name\":\"20mA Sensor an I2C-Analogkarten - Horter &amp; 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