{"id":30666,"date":"2018-08-07T23:47:48","date_gmt":"2018-08-07T18:17:48","guid":{"rendered":"https:\/\/3-inst.toejvy8-liquidwebsites.com\/?p=30666"},"modified":"2018-08-07T23:47:48","modified_gmt":"2018-08-07T18:17:48","slug":"ammeter","status":"publish","type":"post","link":"https:\/\/instrumentationtools.com\/ammeter\/","title":{"rendered":"Ammeter"},"content":{"rendered":"<p style=\"text-align: justify;\">The ammeter measures electric current. It may be calibrated in amperes, milliamperes, or microamperes. In order to measure current, the ammeter must be placed in series with the circuit to be tested (as shown in below Figure 1).<\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-30667\" src=\"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/08\/Ammeter.png\" alt=\"Ammeter\" width=\"1063\" height=\"419\" \/><\/p>\n<p style=\"text-align: center;\">Figure 1 : Ammeter<\/p>\n<p style=\"text-align: justify;\">When an ammeter is placed in series with a circuit, it will increase the resistance of that circuit by an amount equal to the internal resistance of the meter R<sub>m<\/sub>.<\/p>\n<p style=\"text-align: justify;\">The below Equation is the mathematical representation of the current without the meter installed.<\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-30668\" src=\"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/08\/Ammeter-Current-Formula.png\" alt=\"Ammeter Current Formula\" width=\"211\" height=\"94\" \/><\/p>\n<p style=\"text-align: justify;\">The below Equation is the mathematical representation of the current with the meter installed in the circuit.<\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-30669\" src=\"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/08\/Ammeter-Current-Formula-1.png\" alt=\"Ammeter Current Formula - 1\" width=\"259\" height=\"90\" \/><\/p>\n<p style=\"text-align: justify;\">The accuracy of the ammeter K<sub>A<\/sub> is the ratio of the current when the meter is in the circuit, I<sub>w<\/sub> , to the current with the meter out of the circuit, I<sub>o<\/sub> .<\/p>\n<p style=\"text-align: justify;\">The below Equation is the mathematical representation for solving for the accuracy of the ammeter (K<sub>A<\/sub>).<\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-30670\" src=\"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/08\/accuracy-of-the-ammeter.png\" alt=\"accuracy of the ammeter\" width=\"232\" height=\"89\" \/><\/p>\n<p style=\"text-align: justify;\">By substitution laws, The below Equation is a mathematical representation of the accuracy using circuit resistance.<\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-30671\" src=\"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/08\/Ammeter-Accuracy-Formula.png\" alt=\"Ammeter Accuracy Formula\" width=\"473\" height=\"121\" \/><\/p>\n<p style=\"text-align: justify;\">The percent loading error is that percent of error due to loading effects that result from the added resistance of the meter.<\/p>\n<p style=\"text-align: justify;\">The below Equation is a mathematical representation of the percent loading error.<\/p>\n<p style=\"text-align: justify;\"><strong>% loading error = (1 &#8211; K<sub>A<\/sub> )(100 %)<\/strong><\/p>\n<p style=\"text-align: justify;\">A second error which occurs in an ammeter is calibration error. Calibration error is an error that occurs due to inaccurately marked meter faces. Typical values of calibration error in terms of full scale current are about 3 percent.<\/p>\n<p style=\"text-align: justify;\"><strong>Example:<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>An ammeter, with a 10 mA full scale deflection and an internal resistance of 400 \u2126, is placed in a circuit with a 20 V power source\u00a0and a 2K\u2126 resistor.<\/strong><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-30672\" src=\"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/08\/Ammeter-Accuracy-Calculation.png\" alt=\"Ammeter Accuracy Calculation\" width=\"647\" height=\"404\" \/><\/p>\n<p style=\"text-align: center;\">Figure 2 : Ammeter Accuracy<\/p>\n<p style=\"text-align: justify;\">Find:<\/p>\n<ol style=\"text-align: justify;\">\n<li>accuracy<\/li>\n<li>%loading error<\/li>\n<li>true current<\/li>\n<li>measured current<\/li>\n<\/ol>\n<p style=\"text-align: justify;\"><strong>Calculate Accuracy<\/strong><\/p>\n<p style=\"text-align: justify;\">K<sub>A\u00a0<\/sub>= R \/ (Ro + Rm)<\/p>\n<p style=\"text-align: justify;\">K<sub>A\u00a0<\/sub>= 2000\/(2000 + 2000)<\/p>\n<p style=\"text-align: justify;\">K<sub>A\u00a0<\/sub>= 0.833 or 83.3%<\/p>\n<p style=\"text-align: justify;\"><strong>Calculate %loading error<\/strong><\/p>\n<p style=\"text-align: justify;\">% loading error = (1 &#8211; K<sub>A<\/sub> )(100 %)<\/p>\n<p style=\"text-align: justify;\">% loading error = (1 &#8211; 0.833) (100%)<\/p>\n<p style=\"text-align: justify;\">% loading error = 16.7 %<\/p>\n<p style=\"text-align: justify;\"><strong>Calculate\u00a0true current<\/strong><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-30668 alignnone\" src=\"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/08\/Ammeter-Current-Formula.png\" alt=\"Ammeter Current Formula\" width=\"211\" height=\"94\" \/><\/p>\n<p style=\"text-align: justify;\">Io = 20 \/ 2000<\/p>\n<p style=\"text-align: justify;\">Io = 0.01 A or 10mA<\/p>\n<p style=\"text-align: justify;\"><strong>Calculate measured current<\/strong><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-30669 alignnone\" src=\"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/08\/Ammeter-Current-Formula-1.png\" alt=\"Ammeter Current Formula - 1\" width=\"259\" height=\"90\" \/><\/p>\n<p style=\"text-align: justify;\">Iw = 20 \/ (2000 + 400)<\/p>\n<p style=\"text-align: justify;\">Iw = 8.33 mA<\/p>\n<p style=\"text-align: justify;\">An ammeter with a full scale I<sub>m<\/sub> can be shunted with a resistor R<sub>SH<\/sub> in order to measure currents in excess of I<sub>m<\/sub> (as shown in Figure). The reason for shunting an ammeter is to extend the range of the ammeter and, thereby, measure currents higher than the original full scale value.<\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-30674\" src=\"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/08\/Ammeter-with-Shunt.png\" alt=\"Ammeter with Shunt\" width=\"554\" height=\"331\" \/><\/p>\n<p style=\"text-align: center;\">Figure 3 : Ammeter with Shunt<\/p>\n<p style=\"text-align: justify;\">By Kirchhoff\u2019s current law,<\/p>\n<h5 style=\"text-align: justify;\"><strong>I<sub>SH<\/sub> = I<sub>T<\/sub> &#8211; I<sub>m<\/sub><\/strong><\/h5>\n<p style=\"text-align: justify;\">Since the voltage across the shunt must be equal to the voltage across the ammeter, shunt resistance is calculated as follows:<\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-30675\" src=\"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/08\/Ammeter-Shunt-Resistance.png\" alt=\"Ammeter Shunt Resistance\" width=\"331\" height=\"230\" \/><\/p>\n<p style=\"text-align: justify;\">Therefore, the input resistance of a shunted ammeter is related to the meter and shunt resistance. The below Equation is a mathematical representation of this relationship.<\/p>\n<p style=\"text-align: justify;\">NOTE: When computing accuracy for a shunted ammeter, use R<sub>m<\/sub>&#8216; in place of R<sub>m<\/sub><\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-30676\" src=\"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/08\/Ammeter-Current-Formula-2.png\" alt=\"Ammeter Current Formula - 2\" width=\"287\" height=\"87\" \/><\/p>\n<p style=\"text-align: justify;\">The below Equation is a mathematical representation of the relationship between input voltage and current to the ammeter and the value of input resistance.<\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-30677\" src=\"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/08\/Ammeter-Current-Formula-3.png\" alt=\"Ammeter Current Formula - 3\" width=\"321\" height=\"91\" \/><\/p>\n<p style=\"text-align: justify;\"><strong>Example:<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>An ammeter, with a 100 \u2126 meter resistance and a full scale deflection current of 4 mA, is to be shunted to measure currents from 1 to 20 mA.<\/strong><\/p>\n<p style=\"text-align: justify;\">Find:<\/p>\n<ol style=\"text-align: justify;\">\n<li>R<sub>SH<\/sub><\/li>\n<li>R<sub>m<\/sub>&#8216;<\/li>\n<\/ol>\n<p style=\"text-align: justify;\">Solution :<\/p>\n<p style=\"text-align: justify;\"><strong>R<sub>SH\u00a0<\/sub>= (I<sub>m<\/sub>\u00a0R<sub>m<\/sub>\u00a0) \/ ( I<sub>m<\/sub>\u00a0&#8211; R<sub>m\u00a0<\/sub>)<\/strong><\/p>\n<p style=\"text-align: justify;\">R<sub>SH\u00a0<\/sub>= 4 x 100 \/ (20-4)<\/p>\n<p style=\"text-align: justify;\">R<sub>SH\u00a0<\/sub>= 25\u2126<\/p>\n<p style=\"text-align: justify;\"><strong>R<sub>m<\/sub>&#8216; =\u00a0(I<sub>m<\/sub>\u00a0R<sub>m<\/sub>\u00a0) \/\u00a0 I<sub>T<\/sub><\/strong><\/p>\n<p style=\"text-align: justify;\">R<sub>m<\/sub>&#8216; = 4&#215;100 \/ 20<\/p>\n<p style=\"text-align: justify;\">R<sub>m<\/sub>&#8216; = 20\u2126<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The ammeter measures electric current. It may be calibrated in amperes, milliamperes, or microamperes. In order to measure current, the ammeter must be placed in series with the circuit to be tested (as shown in below Figure 1). Figure 1 : Ammeter When an ammeter is placed in series with a circuit, it will increase [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":30674,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mo_disable_npp":"","footnotes":""},"categories":[52403],"tags":[53224,53223,53222,53228,53225,53230,53226,53229,53227],"class_list":{"0":"post-30666","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-electrical-theory","8":"tag-ammeter","9":"tag-ammeter-current","10":"tag-ammeter-current-formula","11":"tag-ammeter-operation","12":"tag-ammeter-principle","13":"tag-ammeter-shunt-resistance","14":"tag-ammeter-theory","15":"tag-ammeter-with-shunt","16":"tag-ammeter-working"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Ammeter - Inst Tools<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/instrumentationtools.com\/ammeter\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ammeter\" \/>\n<meta property=\"og:description\" content=\"The ammeter measures electric current. It may be calibrated in amperes, milliamperes, or microamperes. In order to measure current, the ammeter must be placed in series with the circuit to be tested (as shown in below Figure 1). Figure 1 : Ammeter When an ammeter is placed in series with a circuit, it will increase [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/instrumentationtools.com\/ammeter\/\" \/>\n<meta property=\"og:site_name\" content=\"Inst Tools\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/instrumentationtoolss\/\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/instrumentationtoolss\" \/>\n<meta property=\"article:published_time\" content=\"2018-08-07T18:17:48+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/08\/Ammeter-with-Shunt.png\" \/>\n\t<meta property=\"og:image:width\" content=\"554\" \/>\n\t<meta property=\"og:image:height\" content=\"331\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Editorial Staff\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@insttools\" \/>\n<meta name=\"twitter:site\" content=\"@insttools\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Editorial Staff\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/instrumentationtools.com\\\/ammeter\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/instrumentationtools.com\\\/ammeter\\\/\"},\"author\":{\"name\":\"Editorial Staff\",\"@id\":\"https:\\\/\\\/instrumentationtools.com\\\/#\\\/schema\\\/person\\\/41ad3dac301c219e8d41b1ace61655b2\"},\"headline\":\"Ammeter\",\"datePublished\":\"2018-08-07T18:17:48+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/instrumentationtools.com\\\/ammeter\\\/\"},\"wordCount\":510,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/instrumentationtools.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/instrumentationtools.com\\\/ammeter\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/instrumentationtools.com\\\/wp-content\\\/uploads\\\/2018\\\/08\\\/Ammeter-with-Shunt.png\",\"keywords\":[\"Ammeter\",\"Ammeter Current\",\"Ammeter Current Formula\",\"Ammeter Operation\",\"Ammeter Principle\",\"Ammeter Shunt Resistance\",\"Ammeter Theory\",\"Ammeter with Shunt\",\"Ammeter Working\"],\"articleSection\":[\"Electrical Theory\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/instrumentationtools.com\\\/ammeter\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/instrumentationtools.com\\\/ammeter\\\/\",\"url\":\"https:\\\/\\\/instrumentationtools.com\\\/ammeter\\\/\",\"name\":\"Ammeter - Inst Tools\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/instrumentationtools.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/instrumentationtools.com\\\/ammeter\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/instrumentationtools.com\\\/ammeter\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/instrumentationtools.com\\\/wp-content\\\/uploads\\\/2018\\\/08\\\/Ammeter-with-Shunt.png\",\"datePublished\":\"2018-08-07T18:17:48+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/instrumentationtools.com\\\/ammeter\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/instrumentationtools.com\\\/ammeter\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/instrumentationtools.com\\\/ammeter\\\/#primaryimage\",\"url\":\"https:\\\/\\\/instrumentationtools.com\\\/wp-content\\\/uploads\\\/2018\\\/08\\\/Ammeter-with-Shunt.png\",\"contentUrl\":\"https:\\\/\\\/instrumentationtools.com\\\/wp-content\\\/uploads\\\/2018\\\/08\\\/Ammeter-with-Shunt.png\",\"width\":554,\"height\":331,\"caption\":\"Ammeter with Shunt\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/instrumentationtools.com\\\/ammeter\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/instrumentationtools.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Ammeter\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/instrumentationtools.com\\\/#website\",\"url\":\"https:\\\/\\\/instrumentationtools.com\\\/\",\"name\":\"Instrumentation Tools\",\"description\":\"Instrumentation, Electrical, PLC, Tutorials\",\"publisher\":{\"@id\":\"https:\\\/\\\/instrumentationtools.com\\\/#organization\"},\"alternateName\":\"Inst Tools\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/instrumentationtools.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/instrumentationtools.com\\\/#organization\",\"name\":\"Instrumentation Tools\",\"alternateName\":\"Inst Tools\",\"url\":\"https:\\\/\\\/instrumentationtools.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/instrumentationtools.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/instrumentationtools.com\\\/wp-content\\\/uploads\\\/2018\\\/10\\\/Instrumentation-Tools-Logo.png\",\"contentUrl\":\"https:\\\/\\\/instrumentationtools.com\\\/wp-content\\\/uploads\\\/2018\\\/10\\\/Instrumentation-Tools-Logo.png\",\"width\":1024,\"height\":1024,\"caption\":\"Instrumentation Tools\"},\"image\":{\"@id\":\"https:\\\/\\\/instrumentationtools.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/instrumentationtoolss\\\/\",\"https:\\\/\\\/x.com\\\/insttools\",\"https:\\\/\\\/mastodon.social\\\/@InstrumentationTools\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/instrumentationtools\\\/\",\"https:\\\/\\\/whatsapp.com\\\/channel\\\/0029VaAbUecLNSa4rDPOV31o\",\"https:\\\/\\\/t.me\\\/+u3qORX5FKec1NjA1\",\"https:\\\/\\\/www.instagram.com\\\/instrumentationtools\\\/\",\"https:\\\/\\\/youtube.com\\\/instrumentationtools\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/instrumentationtools.com\\\/#\\\/schema\\\/person\\\/41ad3dac301c219e8d41b1ace61655b2\",\"name\":\"Editorial Staff\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/7d7b78a0bf6b95aebc68e7790f9094403ae40b3fcb9c436cb6956873b90826de?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/7d7b78a0bf6b95aebc68e7790f9094403ae40b3fcb9c436cb6956873b90826de?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/7d7b78a0bf6b95aebc68e7790f9094403ae40b3fcb9c436cb6956873b90826de?s=96&d=mm&r=g\",\"caption\":\"Editorial Staff\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/instrumentationtoolss\",\"https:\\\/\\\/x.com\\\/insttools\",\"https:\\\/\\\/www.youtube.com\\\/c\\\/InstrumentationTools\\\/\"],\"url\":\"https:\\\/\\\/instrumentationtools.com\\\/author\\\/editorial\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Ammeter - Inst Tools","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/instrumentationtools.com\/ammeter\/","og_locale":"en_US","og_type":"article","og_title":"Ammeter","og_description":"The ammeter measures electric current. It may be calibrated in amperes, milliamperes, or microamperes. In order to measure current, the ammeter must be placed in series with the circuit to be tested (as shown in below Figure 1). Figure 1 : Ammeter When an ammeter is placed in series with a circuit, it will increase [&hellip;]","og_url":"https:\/\/instrumentationtools.com\/ammeter\/","og_site_name":"Inst Tools","article_publisher":"https:\/\/www.facebook.com\/instrumentationtoolss\/","article_author":"https:\/\/www.facebook.com\/instrumentationtoolss","article_published_time":"2018-08-07T18:17:48+00:00","og_image":[{"width":554,"height":331,"url":"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/08\/Ammeter-with-Shunt.png","type":"image\/png"}],"author":"Editorial Staff","twitter_card":"summary_large_image","twitter_creator":"@insttools","twitter_site":"@insttools","twitter_misc":{"Written by":"Editorial Staff","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/instrumentationtools.com\/ammeter\/#article","isPartOf":{"@id":"https:\/\/instrumentationtools.com\/ammeter\/"},"author":{"name":"Editorial Staff","@id":"https:\/\/instrumentationtools.com\/#\/schema\/person\/41ad3dac301c219e8d41b1ace61655b2"},"headline":"Ammeter","datePublished":"2018-08-07T18:17:48+00:00","mainEntityOfPage":{"@id":"https:\/\/instrumentationtools.com\/ammeter\/"},"wordCount":510,"commentCount":0,"publisher":{"@id":"https:\/\/instrumentationtools.com\/#organization"},"image":{"@id":"https:\/\/instrumentationtools.com\/ammeter\/#primaryimage"},"thumbnailUrl":"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/08\/Ammeter-with-Shunt.png","keywords":["Ammeter","Ammeter Current","Ammeter Current Formula","Ammeter Operation","Ammeter Principle","Ammeter Shunt Resistance","Ammeter Theory","Ammeter with Shunt","Ammeter Working"],"articleSection":["Electrical Theory"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/instrumentationtools.com\/ammeter\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/instrumentationtools.com\/ammeter\/","url":"https:\/\/instrumentationtools.com\/ammeter\/","name":"Ammeter - Inst Tools","isPartOf":{"@id":"https:\/\/instrumentationtools.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/instrumentationtools.com\/ammeter\/#primaryimage"},"image":{"@id":"https:\/\/instrumentationtools.com\/ammeter\/#primaryimage"},"thumbnailUrl":"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/08\/Ammeter-with-Shunt.png","datePublished":"2018-08-07T18:17:48+00:00","breadcrumb":{"@id":"https:\/\/instrumentationtools.com\/ammeter\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/instrumentationtools.com\/ammeter\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/instrumentationtools.com\/ammeter\/#primaryimage","url":"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/08\/Ammeter-with-Shunt.png","contentUrl":"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/08\/Ammeter-with-Shunt.png","width":554,"height":331,"caption":"Ammeter with Shunt"},{"@type":"BreadcrumbList","@id":"https:\/\/instrumentationtools.com\/ammeter\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/instrumentationtools.com\/"},{"@type":"ListItem","position":2,"name":"Ammeter"}]},{"@type":"WebSite","@id":"https:\/\/instrumentationtools.com\/#website","url":"https:\/\/instrumentationtools.com\/","name":"Instrumentation Tools","description":"Instrumentation, Electrical, PLC, Tutorials","publisher":{"@id":"https:\/\/instrumentationtools.com\/#organization"},"alternateName":"Inst Tools","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/instrumentationtools.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/instrumentationtools.com\/#organization","name":"Instrumentation Tools","alternateName":"Inst Tools","url":"https:\/\/instrumentationtools.com\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/instrumentationtools.com\/#\/schema\/logo\/image\/","url":"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/10\/Instrumentation-Tools-Logo.png","contentUrl":"https:\/\/instrumentationtools.com\/wp-content\/uploads\/2018\/10\/Instrumentation-Tools-Logo.png","width":1024,"height":1024,"caption":"Instrumentation Tools"},"image":{"@id":"https:\/\/instrumentationtools.com\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/instrumentationtoolss\/","https:\/\/x.com\/insttools","https:\/\/mastodon.social\/@InstrumentationTools","https:\/\/www.linkedin.com\/company\/instrumentationtools\/","https:\/\/whatsapp.com\/channel\/0029VaAbUecLNSa4rDPOV31o","https:\/\/t.me\/+u3qORX5FKec1NjA1","https:\/\/www.instagram.com\/instrumentationtools\/","https:\/\/youtube.com\/instrumentationtools"]},{"@type":"Person","@id":"https:\/\/instrumentationtools.com\/#\/schema\/person\/41ad3dac301c219e8d41b1ace61655b2","name":"Editorial Staff","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/7d7b78a0bf6b95aebc68e7790f9094403ae40b3fcb9c436cb6956873b90826de?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/7d7b78a0bf6b95aebc68e7790f9094403ae40b3fcb9c436cb6956873b90826de?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/7d7b78a0bf6b95aebc68e7790f9094403ae40b3fcb9c436cb6956873b90826de?s=96&d=mm&r=g","caption":"Editorial Staff"},"sameAs":["https:\/\/www.facebook.com\/instrumentationtoolss","https:\/\/x.com\/insttools","https:\/\/www.youtube.com\/c\/InstrumentationTools\/"],"url":"https:\/\/instrumentationtools.com\/author\/editorial\/"}]}},"_links":{"self":[{"href":"https:\/\/instrumentationtools.com\/wp-json\/wp\/v2\/posts\/30666","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/instrumentationtools.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/instrumentationtools.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/instrumentationtools.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/instrumentationtools.com\/wp-json\/wp\/v2\/comments?post=30666"}],"version-history":[{"count":0,"href":"https:\/\/instrumentationtools.com\/wp-json\/wp\/v2\/posts\/30666\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/instrumentationtools.com\/wp-json\/wp\/v2\/media\/30674"}],"wp:attachment":[{"href":"https:\/\/instrumentationtools.com\/wp-json\/wp\/v2\/media?parent=30666"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/instrumentationtools.com\/wp-json\/wp\/v2\/categories?post=30666"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/instrumentationtools.com\/wp-json\/wp\/v2\/tags?post=30666"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}