{"id":1314,"date":"2024-08-15T04:13:42","date_gmt":"2024-08-14T21:13:42","guid":{"rendered":"http:\/\/www.tneutron.net\/elektro\/?p=1314"},"modified":"2024-08-13T07:52:22","modified_gmt":"2024-08-13T00:52:22","slug":"basic-meter-ppmc","status":"publish","type":"post","link":"https:\/\/www.tneutron.net\/elektro\/basic-meter-ppmc\/","title":{"rendered":"Basic Meter PPMC"},"content":{"rendered":"<p><span class=\"notranslate\">D&#8217;Arsonval meter base system uses permanent magnets and coils round.<\/span> <span class=\"notranslate\"> Therefore meters D&#8217;Arsonval commonly referred to as a Permanent Magnet Moving Coil (PMMC).<\/span> <span class=\"notranslate\"> Shown in Figure 5.6.<\/span> <span class=\"notranslate\"> D&#8217;Arsonval needle movement system requires very low power and a small current to the deviation needle on a full scale.<\/span><br \/>\n<a href=\"http:\/\/www.tneutron.net\/elektro\/wp-content\/uploads\/sites\/2\/2016\/01\/image-50.png\"><img loading=\"lazy\" decoding=\"async\" title=\"image\" src=\"http:\/\/www.tneutron.net\/elektro\/wp-content\/uploads\/sites\/2\/2016\/01\/image_thumb-51.png\" alt=\"image\" width=\"409\" height=\"227\" border=\"0\" \/><\/a><br \/>\n<span class=\"notranslate\"> Figure 6.7 Schematic picture PPMC meter (D&#8217;Arsonval)<\/span><\/p>\n<p><span class=\"notranslate\"> The equation for the torque that causes the needle to move are:<\/span><br \/>\n<span class=\"notranslate\"> T = B x A x I x N<\/span><br \/>\n<span class=\"notranslate\"> Where<\/span><br \/>\n<span class=\"notranslate\"> T = Torque<\/span><br \/>\n<span class=\"notranslate\"> B = magnetic flux density in Wb \/ m2<\/span><br \/>\n<span class=\"notranslate\"> Idp = Current in the coil around in amperes<\/span><br \/>\n<span class=\"notranslate\"> N = Number of rotary coil windings<\/span><\/p>\n<p><span class=\"notranslate\"> Figure 6.7 shows the construction of a basic meter rotary spindle (PPMC) simplified to make it easier to understand the movement of the needle meter mechanization system.<\/span> <span class=\"notranslate\"> In the given rotary shaft coil spring so that the needle gently so that the meter can be reverted to its original position after the current that causes a torque on the coils play does not exist.<\/span> <span class=\"notranslate\"> PPMC measuring tool applied to ampermeter, voltmeter and ohmmeter.<\/span><\/p>\n<p><span class=\"notranslate\"> Rotary spindle-based measuring instrument is a precision measuring instrument with high accuracy.<\/span> <span class=\"notranslate\"> The level of accuracy of the measuring instrument is determined by the basic meter specifications PPMC.<\/span> <span class=\"notranslate\"> Characteristics of PPMC important basic meter which determines the class ketelitiannyaadalah:<\/span><br \/>\n<span class=\"notranslate\"> \uf0b7 &#8211; Flow meter nominal basis stated in mikroamper or miliamper<\/span><br \/>\n<span class=\"notranslate\"> \uf0b7 &#8211; resistance in the meter which is the resistance of the coil rotary expressed in ohms.<\/span><br \/>\n<span class=\"notranslate\"> Here is given an example the case of a measuring instrument PPMC with the following specifications:<\/span><br \/>\n<span class=\"notranslate\"> \uf0b7 &#8211; Koil rotary coil consists of 84 windings, with a length = 1.5 cm, and width coil = 1 cm with a resistance value of Rm = 88 ohms.<\/span><br \/>\n<span class=\"notranslate\"> \uf0b7 &#8211; magnetic flux density (B) = 0.2 Tesla (weber \/ m2)<\/span><br \/>\n<span class=\"notranslate\"> \uf0b7 &#8211; nominal allowable current flows through the coil rotary (Idp) = 0.5 mA<\/span><br \/>\n<span class=\"notranslate\"> \uf0b7 &#8211; full needle deviation of 100 degrees.<\/span><br \/>\n<span class=\"notranslate\"> Analysis:<\/span><br \/>\n<span class=\"notranslate\"> \uf0b7 &#8211; With the size of the coil which has a length of 1.5 cm and a width of 1 cm, then the coil cross-sectional area (A) was 1.5 cm2 or 1.5 x 10-2 m2.<\/span><br \/>\n<span class=\"notranslate\"> \uf0b7 &#8211; With a flux density of 0.2 weber \/ m2 and the number of coil windings rotary spindle (N) = 100 windings, and the value of the current flowing in the coil of 0.5 mA (miliamper) or 0.5 \u00d7 10-3 amperes, the torque value received by the coil rotary spindle (T) according to the torque above formula is:<\/span><br \/>\n<span class=\"notranslate\"> (0.2 weber \/ m2) (1.5 \u00d7 10-2 m2) (0.5 \u00d7 10-3 amperes) (100 loops) = 1.5 \u00d7 10-4 Nm (Newtonmeter)<\/span><\/p>\n<p><span class=\"notranslate\"> So if the coil is energized rotary direct current of 0.5 mA, will receive a torque of 1.5 \u00d7 10-4 Nm.<\/span> <span class=\"notranslate\"> Of torque that will make the needle meter rotary motion.<\/span> <span class=\"notranslate\"> Because mechanization needle is made such that at a current of 0.5 mA, then the needle will be deviated by 100 degrees.<\/span> <span class=\"notranslate\"> As shown in Figure 6.8.<\/span><br \/>\n<a href=\"http:\/\/www.tneutron.net\/elektro\/wp-content\/uploads\/sites\/2\/2016\/01\/image-53.png\"><img loading=\"lazy\" decoding=\"async\" title=\"image\" src=\"http:\/\/www.tneutron.net\/elektro\/wp-content\/uploads\/sites\/2\/2016\/01\/image_thumb-53.png\" alt=\"image\" width=\"255\" height=\"264\" border=\"0\" \/><\/a><br \/>\n<span class=\"notranslate\"> Figure 6.8 The movement of needles due to presence of Torque<\/span><\/p>\n<p><span class=\"notranslate\"> PPMC basic meter is not calibrated to measure certain electrical quantities, for example ampermeter, voltmeter, and ohmmeter commonly known as the galvanometer.<\/span> <span class=\"notranslate\"> Galvanometer is a basic meter with a very small measuring limit is usually of the order of mikroamper.<\/span> <span class=\"notranslate\"> Typically galvanometer has a zero in the middle, as shown in Figure 6.9.<\/span><br \/>\n<a href=\"http:\/\/www.tneutron.net\/elektro\/wp-content\/uploads\/sites\/2\/2016\/01\/image-55.png\"><img loading=\"lazy\" decoding=\"async\" title=\"image\" src=\"http:\/\/www.tneutron.net\/elektro\/wp-content\/uploads\/sites\/2\/2016\/01\/image_thumb-55.png\" alt=\"image\" width=\"343\" height=\"185\" border=\"0\" \/><\/a><br \/>\n<span class=\"notranslate\"> Figure 6.9 Galvanometer<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>D&#8217;Arsonval meter base system uses permanent magnets and coils round. Therefore meters D&#8217;Arsonval commonly referred to as a Permanent Magnet<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[2232],"tags":[1807,1799,1806,1800,1808,1802,1801,1798,1805,1803,1804],"class_list":["post-1314","post","type-post","status-publish","format-standard","hentry","category-english","tag-basic-meteorological-principles","tag-basic-meteorology","tag-basic-meteorology-powerpoint","tag-basic-meteorology-program","tag-basic-meteorology-questions","tag-basic-meteorology-quiz","tag-basic-meteorology-terms","tag-basic-meter","tag-basic-meter-conversion-chart","tag-basic-meter-movement","tag-basic-meter-poetry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Basic Meter PPMC - TN Elektro<\/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:\/\/www.tneutron.net\/elektro\/basic-meter-ppmc\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Basic Meter PPMC - TN Elektro\" \/>\n<meta name=\"twitter:description\" content=\"D&#8217;Arsonval meter base system uses permanent magnets and coils round. 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