{"id":6042,"date":"2024-01-07T20:01:57","date_gmt":"2024-01-07T20:01:57","guid":{"rendered":"https:\/\/csiag.eu\/?p=6042"},"modified":"2024-01-10T20:06:50","modified_gmt":"2024-01-10T20:06:50","slug":"how-to-multimeter","status":"publish","type":"post","link":"https:\/\/csiag.eu\/en\/blog\/2024\/01\/07\/how-to-multimeter\/","title":{"rendered":"How to \u2013 multimeter"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/csiag.eu\/en\/blog\/2024\/01\/07\/how-to-multimeter\/#Beispiele_aus_der_Praxis\" >Practical examples<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/csiag.eu\/en\/blog\/2024\/01\/07\/how-to-multimeter\/#Sicherung_prufen\" >Check fuse<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/csiag.eu\/en\/blog\/2024\/01\/07\/how-to-multimeter\/#Leitungen_zuordnen\" >Assign lines<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/csiag.eu\/en\/blog\/2024\/01\/07\/how-to-multimeter\/#Spannung_messen\" >measure the voltage<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/csiag.eu\/en\/blog\/2024\/01\/07\/how-to-multimeter\/#Strom_messen\" >Measure current<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/csiag.eu\/en\/blog\/2024\/01\/07\/how-to-multimeter\/#Zangen-Multimeter\" >Clamp multimeter<\/a><\/li><\/ul><\/nav><\/div>\n<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading time<\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>\n<p>How to - a multimeter is a universal electronic measuring device for measuring voltage, current, continuity, diodes, transistors, and possibly even capacities, frequencies, temperatures, etc.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"400\" height=\"533\" src=\"https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Multimeter.png\" alt=\"\" class=\"wp-image-6081\" srcset=\"https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Multimeter.png 400w, https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Multimeter-9x12.png 9w, https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Multimeter-225x300.png 225w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/><figcaption class=\"wp-element-caption\">multimeter<\/figcaption><\/figure>\n<\/div>\n\n\n<p>The generally used functions are continuity, voltage and current measurements, which are explained below.<\/p>\n\n\n\n<p>Of course there are clear differences in quality, ultimately the price ranges from around 20 euros to the four-digit range.<\/p>\n\n\n\n<p>If you prefer a branded product, the price for the multimeter shown is 300 euros <em>Voltcraft VC-891<\/em>, or 200 euros for that <em>Voltcraft<\/em> Clamp multimeter <em>VC-750E<\/em>. The same products are available at correspondingly higher prices, including a calibration certificate, which is certainly unnecessary in the applications mentioned here.<\/p>\n\n\n\n<p>FLUKE is another well-known manufacturer of professional measurement technology that has been tried and tested for decades. The prices quoted there are consequently at least twice as high.<\/p>\n\n\n\n<p>However, if you just need a \u201cguess\u201d iron, devices between around 40 and 90 euros will probably serve you well. If it ever gives up the ghost, maybe... Especially outside the warranty period, it may be possible to purchase a replacement instead of a repair. the usual way.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Beispiele_aus_der_Praxis\"><\/span>Practical examples<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Sicherung_prufen\"><\/span>Check fuse<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Some fuses can be seen at first glance as to whether they are defective or not, while others appear to be OK. A continuity measurement provides certainty.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"150\" height=\"74\" src=\"https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Durchgang_Symbol.png\" alt=\"\" class=\"wp-image-6050\" srcset=\"https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Durchgang_Symbol.png 150w, https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Durchgang_Symbol-18x9.png 18w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/><\/figure>\n<\/div>\n\n\n<p>To check whether the fuse is complete, turn on the meter and select the setting according to a symbol similar to the one shown above. If you touch the metal end of the black measuring tip with the metal end of the red measuring tip, an acoustic signal sounds and the digital display shows \u201c0.0000\u201d.<\/p>\n\n\n\n<p>The measuring device reacts in the same way if the fuse is intact. If there is no acoustic signal and the display shows \u201c1.0000\u201d, then the fuse has no continuity and is defective.<\/p>\n\n\n\n<p>The sign (\u03a9 = <em>ohm<\/em>) stands for the SI unit of electrical resistance, after the German physicist <em>Georg Simon Ohm<\/em> (* March 16, 1789 \u2013 \u2020 July 6, 1854).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Leitungen_zuordnen\"><\/span>Assign lines<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>The above function also enables the allocation of lines that cannot be traced visually. For example, cables in cable harnesses that are laid behind panels, furniture or cable ducts and are not marked to distinguish them.<\/p>\n\n\n\n<p>Here a measuring tip is connected to the cable in question via an \u201cextension cable\u201d. With the other measuring tip you scan one cable after the other. Once you have found the corresponding end, the acoustic signal sounds and the display shows \u201c0.0000\u201d.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Spannung_messen\"><\/span>measure the voltage<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Whether battery or socket, \u201cvoltage\u201d must be measured in both cases, either direct voltage (DC \u2013 <em>direct current <\/em>(direct current)) or alternating voltage (AC \u2013 <em>alternating current<\/em> (alternating current)), which is intended to supply power to connected devices.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"543\" height=\"267\" src=\"https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/ACDC.png\" alt=\"\" class=\"wp-image-6056\" srcset=\"https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/ACDC.png 543w, https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/ACDC-18x9.png 18w, https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/ACDC-300x148.png 300w\" sizes=\"(max-width: 543px) 100vw, 543px\" \/><figcaption class=\"wp-element-caption\">Voltage curve AC \/ DC<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Alternating voltage changes in time with the mains frequency (50 \/ 60 Hz = oscillations per second) between + 230 and - 230 volts, while direct voltage, here for example + 24 V, is always constant over time.<\/p>\n\n\n\n<p>The test probes and sockets of measuring devices are usually colored black (-) and red (+). If you measure the voltage of a battery, the red (V) is connected to the plus pole and the black (COM) to the minus pole.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"433\" height=\"277\" src=\"https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Terminals_Messgeraet.png\" alt=\"\" class=\"wp-image-6058\" srcset=\"https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Terminals_Messgeraet.png 433w, https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Terminals_Messgeraet-18x12.png 18w, https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Terminals_Messgeraet-300x192.png 300w\" sizes=\"(max-width: 433px) 100vw, 433px\" \/><figcaption class=\"wp-element-caption\">Connection terminals for ground (-) and plus (+) <\/figcaption><\/figure>\n<\/div>\n\n\n<p>When the selector switch is set to DC V(volt), the display shows, for example, \u201c13.242 V\u201d with a 12V battery. If you swap the two measuring tips, the display changes to \u201c- 13.242 V\u201d.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"266\" height=\"193\" src=\"https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Messung_Spannung.png\" alt=\"\" class=\"wp-image-6077\" srcset=\"https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Messung_Spannung.png 266w, https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Messung_Spannung-18x12.png 18w\" sizes=\"(max-width: 266px) 100vw, 266px\" \/><figcaption class=\"wp-element-caption\">Circuit diagram measuring arrangement (voltage)<\/figcaption><\/figure>\n<\/div>\n\n\n<p>The SI unit <em>volt<\/em> stands for electrical voltage, named after the Italian physicist Alessandro Giuseppe Antonio Anastasio Volta (* February 18, 1745 \u2013 \u2020 March 5, 1827), among others the inventor of the battery.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Strom_messen\"><\/span>Measure current<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>If the battery is empty faster than you would like and you apparently hardly have any consumers switched on, the question often arises: what draws how much current?<\/p>\n\n\n\n<p class=\"has-text-color has-link-color wp-elements-f9500f8ea1f6c2b37b4194095973e233\" style=\"color:#ff0000\">When measuring current with a multimeter, the maximum current carrying capacity according to the data sheet must be observed!<\/p>\n\n\n\n<p>By setting the measuring device selector switch to DC A (mp\u00e8re) and connecting the black measuring line to COM and the red line to the red socket marked \u201cA\u201d, the current flow in a line carrying DC voltage can be measured.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"138\" height=\"251\" src=\"https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/A_Buchse.png\" alt=\"\" class=\"wp-image-6068\" srcset=\"https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/A_Buchse.png 138w, https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/A_Buchse-7x12.png 7w\" sizes=\"(max-width: 138px) 100vw, 138px\" \/><figcaption class=\"wp-element-caption\">Connection terminal for current measurement (A)<\/figcaption><\/figure>\n<\/div>\n\n\n<p>To do this, disconnect the cable at an accessible connection (e.g. behind the battery fuse, which must be removed before the measurement!) and connect the red plus cable to the now open output of the fuse, the black negative cable to the unscrewed one Cable end. After inserting the fuse, the meter shows the current flowing.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"266\" height=\"193\" src=\"https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Strom_Messung_rot.png\" alt=\"\" class=\"wp-image-6073\" srcset=\"https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Strom_Messung_rot.png 266w, https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Strom_Messung_rot-18x12.png 18w\" sizes=\"(max-width: 266px) 100vw, 266px\" \/><figcaption class=\"wp-element-caption\">Circuit diagram measuring arrangement (current)<\/figcaption><\/figure>\n<\/div>\n\n\n<p>Now one consumer after the other can be switched off and the difference in the measured values, which represents the respective electricity requirement, can be noted. After all \u2013 obvious \u2013 consumers have been switched off, the display should show \u201c0.0000\u201d. If a value greater than zero is still displayed, there is still a consumer that has not been taken into account...<\/p>\n\n\n\n<p>The SI unit <em>Amp<\/em> describes the electrical current strength and the derived quantity magnetic flux, named after the French mathematician and physicist Andr\u00e9-Marie Amp\u00e8re<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Zangen-Multimeter\"><\/span>Clamp multimeter<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>There are so-called clamp multimeters with which you can measure the current in a cable by positioning it as centrally as possible in the area enclosed by the two clamp arms and then reading the value.<br>It is therefore not necessary to disconnect the cable, as with the type of multimeter described above.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"400\" height=\"533\" src=\"https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Zangenmultimeter.png\" alt=\"\" class=\"wp-image-6080\" srcset=\"https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Zangenmultimeter.png 400w, https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Zangenmultimeter-9x12.png 9w, https:\/\/csiag.eu\/wp-content\/uploads\/2024\/01\/Zangenmultimeter-225x300.png 225w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/><figcaption class=\"wp-element-caption\">Clamp multimeter<\/figcaption><\/figure>\n<\/div>\n\n\n<p>These devices usually contain the same functions as the multimeter shown at the beginning. The associated measuring lines are connected to the lower face of the clamp multimeter.<\/p>","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading time<\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>How to - a multimeter is a universal electronic measuring device for measuring voltage, current, continuity, diodes, transistors, and possibly even capacitance, frequency, temperature, etc. The functions generally used are continuity, voltage and current measurements, which are explained below. Of course, there are significant differences in quality, with prices ranging from around 20 euros to the four-digit range....&nbsp;<a href=\"https:\/\/csiag.eu\/en\/blog\/2024\/01\/07\/how-to-multimeter\/\" rel=\"bookmark\">Read More \"<span class=\"screen-reader-text\">How to \u2013 multimeter<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[1757,2878],"tags":[839,2890,2881,432,840,2611,2894,2886,1432,2884,2885,2892,2891,1674,2889,2882,2887,1062,448,2888,446,470,2898,2897,2896,2895,466,1415,2893,835,2883,2879,2880],"class_list":["post-6042","post","type-post","status-publish","format-standard","hentry","category-elektrotechnik","category-messtechnik","tag-ac","tag-akku","tag-ampere","tag-batterie","tag-dc","tag-durchgang","tag-fluke","tag-frequez","tag-gleichspannung","tag-gleichstrom","tag-kapazitaet","tag-messanordnung","tag-messspitze","tag-multimeter","tag-netzfrequenzhertz","tag-ohm","tag-schaltbild","tag-sicherung","tag-spannung","tag-spannungsverlauf","tag-strom","tag-temperatur","tag-vc-750e","tag-vc-891","tag-vc750e","tag-vc891","tag-verbraucher","tag-volt","tag-voltcraft","tag-wechselspannung","tag-wechselstrom","tag-zangen-multimeter","tag-zangenmultimeter"],"modified_by":"Achim Goerner","_links":{"self":[{"href":"https:\/\/csiag.eu\/en\/wp-json\/wp\/v2\/posts\/6042","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/csiag.eu\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/csiag.eu\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/csiag.eu\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/csiag.eu\/en\/wp-json\/wp\/v2\/comments?post=6042"}],"version-history":[{"count":0,"href":"https:\/\/csiag.eu\/en\/wp-json\/wp\/v2\/posts\/6042\/revisions"}],"wp:attachment":[{"href":"https:\/\/csiag.eu\/en\/wp-json\/wp\/v2\/media?parent=6042"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/csiag.eu\/en\/wp-json\/wp\/v2\/categories?post=6042"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/csiag.eu\/en\/wp-json\/wp\/v2\/tags?post=6042"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}