{"id":14245,"date":"2023-02-28T08:31:08","date_gmt":"2023-02-28T08:31:08","guid":{"rendered":"https:\/\/kcsensor.com\/?p=14245"},"modified":"2026-09-28T09:46:53","modified_gmt":"2026-09-28T09:46:53","slug":"electromagnetic-flowmeter-vs-ultrasonic-flowmeter","status":"publish","type":"post","link":"https:\/\/www.kcsensor.com\/cs\/electromagnetic-flowmeter-vs-ultrasonic-flowmeter\/","title":{"rendered":"Elektromagnetick\u00fd pr\u016ftokom\u011br versus ultrazvukov\u00fd pr\u016ftokom\u011br"},"content":{"rendered":"<figure class=\"wp-block-table\"><table><tbody><tr><td>Porovn\u00e1n\u00ed polo\u017eek<\/td><td>Elektromagnetick\u00fd pr\u016ftokom\u011br<\/td><td>Ultrazvukov\u00fd pr\u016ftokom\u011br<\/td><\/tr><tr><td>princip fungov\u00e1n\u00ed<\/td><td>Faraday\u016fv z\u00e1kon elektromagnetick\u00e9 indukce<\/td><td>\u010casov\u00fd rozd\u00edl mezi dop\u0159edn\u00fdm a zp\u011btn\u00fdm \u0161\u00ed\u0159en\u00edm ultrazvukov\u00fdch vln<\/td><\/tr><tr><td>m\u011b\u0159iteln\u00fd rozsah<\/td><td>Kapalina s vodivost\u00ed \u2265 5 \u00b5S\/cm<\/td><td>Lze m\u011b\u0159it kapaliny, plyny a p\u00e1ru<\/td><\/tr><tr><td>zp\u016fsob instalace<\/td><td>Trubkov\u00fd typ \/ z\u00e1suvn\u00fd typ<\/td><td>Trubkov\u00fd \u00fasek \/ nasazovac\u00ed \/ up\u00ednac\u00ed<\/td><\/tr><tr><td>podm\u00ednky instalace<\/td><td>Mont\u00e1\u017e uz\u00e1v\u011bru<\/td><td>Mont\u00e1\u017e pod tlakem<\/td><\/tr><tr><td>n\u00e1klady na instalaci<\/td><td>vysok\u00fd<\/td><td>N\u00edzk\u00e1<\/td><\/tr><tr><td>metoda m\u011b\u0159en\u00ed<\/td><td>Elektromagnetick\u00e1 indukce<\/td><td>metoda \u010dasov\u00e9ho rozd\u00edlu<\/td><\/tr><tr><td>stabilita<\/td><td>l\u00e9pe<\/td><td>vynikaj\u00edc\u00ed<\/td><\/tr><tr><td>V\u0161estrannost potrub\u00ed<\/td><td>velmi \u0161patn\u00fd<\/td><td>neomezen\u00fd<\/td><\/tr><tr><td>zp\u016fsob \u00fadr\u017eby<\/td><td>obt\u00ed\u017en\u011bj\u0161\u00ed<\/td><td>jednoduch\u00e9<\/td><\/tr><tr><td>ekonomick\u00e9 p\u0159\u00ednosy<\/td><td>vy\u0161\u0161\u00ed<\/td><td>v\u00fdrazn\u011b<\/td><\/tr><tr><td>Oblast pou\u017eit\u00ed<\/td><td>p\u0159edev\u0161\u00edm z\u00e1sobn\u00ed n\u00e1dr\u017ee<\/td><td>Hlavn\u011b vodovodn\u00ed potrub\u00ed<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Elektromagnetick\u00fd pr\u016ftokom\u011br versus ultrazvukov\u00fd pr\u016ftokom\u011br<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. Princip fungov\u00e1n\u00ed je odli\u0161n\u00fd<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Elektromagnetick\u00fd pr\u016ftokom\u011br versus ultrazvukov\u00fd pr\u016ftokom\u011br. Elektromagnetick\u00e9 pr\u016ftokom\u011bry jsou p\u0159\u00edstroje, kter\u00e9 m\u011b\u0159\u00ed pr\u016ftok na z\u00e1klad\u011b Faradayova z\u00e1kona elektromagnetick\u00e9 indukce.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ultrazvukov\u00e9 pr\u016ftokom\u011bry m\u011b\u0159\u00ed pr\u016ftok na z\u00e1klad\u011b \u010dasov\u00e9ho rozd\u00edlu mezi dop\u0159edn\u00fdm a zp\u011btn\u00fdm pr\u016fchodem ultrazvukov\u00e9ho paprsku potrub\u00edm.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Rozsah m\u011b\u0159en\u00ed se li\u0161\u00ed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Elektromagnetick\u00e9 pr\u016ftokom\u011bry kladou po\u017eadavky na doln\u00ed mez vodivosti m\u011b\u0159en\u00e9 kapaliny. Obecn\u011b plat\u00ed, \u017ee vodivost m\u011b\u0159en\u00e9ho m\u00e9dia nesm\u00ed b\u00fdt ni\u017e\u0161\u00ed ne\u017e 5 \u00b5S\/cm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ve srovn\u00e1n\u00ed s elektromagnetick\u00fdm pr\u016ftokom\u011brem m\u00e1 ultrazvukov\u00fd pr\u016ftokom\u011br relativn\u011b velk\u00fd m\u011b\u0159ic\u00ed rozsah. Je schopen m\u011b\u0159it plyn a p\u00e1ru, kter\u00e9 elektromagnetick\u00fd pr\u016ftokom\u011br m\u011b\u0159it nedok\u00e1\u017ee. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S vysokou p\u0159esnost\u00ed lze m\u011b\u0159it i nevodiv\u00e1, radioaktivn\u00ed, ho\u0159lav\u00e1 a v\u00fdbu\u0161n\u00e1 m\u00e9dia.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Zp\u016fsob instalace se li\u0161\u00ed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u011bt\u0161ina elektromagnetick\u00fdch pr\u016ftokom\u011br\u016f se montuje do potrub\u00ed, zat\u00edmco mal\u00e1 \u010d\u00e1st se instaluje jako z\u00e1suvn\u00fd typ. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ob\u011b tyto zp\u016fsoby instalace vy\u017eaduj\u00ed pro\u0159\u00edznut\u00ed nebo vykop\u00e1n\u00ed otvor\u016f v potrub\u00ed a p\u0159ed instalac\u00ed je nutn\u00e9 cel\u00e9 potrub\u00ed uzav\u0159\u00edt a odstavit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ultrazvukov\u00e9 pr\u016ftokom\u011bry se obvykle instaluj\u00ed t\u0159emi zp\u016fsoby: jako p\u0159ikladac\u00ed, z\u00e1suvn\u00e9 a zabudovan\u00e9 do potrub\u00ed. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mezi nej\u010dast\u011bji pou\u017e\u00edvan\u00e9 typy pat\u0159\u00ed typ s up\u00ednac\u00ed svorkou a z\u00e1suvn\u00fd typ, p\u0159i\u010dem\u017e k jejich instalaci nen\u00ed nutn\u00e9 p\u0159eru\u0161ovat provoz. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Z nich zejm\u00e9na vn\u011bj\u0161\u00ed up\u00ednac\u00ed za\u0159\u00edzen\u00ed nepo\u0161kod\u00ed potrub\u00ed, nep\u0159ich\u00e1z\u00ed do styku s m\u011b\u0159enou l\u00e1tkou a nehroz\u00ed u n\u011bj \u017e\u00e1dn\u00e9 \u00faniky.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. Podm\u00ednky instalace se li\u0161\u00ed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Elektromagnetick\u00e9 pr\u016ftokom\u011bry jsou zpravidla uzav\u00edrateln\u00e9 za\u0159\u00edzen\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ultrazvukov\u00e9 pr\u016ftokom\u011bry se instaluj\u00ed pod tlakem.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. Rozsah pou\u017eiteln\u00fdch pr\u016fm\u011br\u016f trubek se zna\u010dn\u011b li\u0161\u00ed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Elektromagnetick\u00e9 pr\u016ftokom\u011bry se obvykle pou\u017e\u00edvaj\u00ed pro konkr\u00e9tn\u00ed potrub\u00ed, proto\u017ee faktory, jako je pr\u016fm\u011br potrub\u00ed a m\u011b\u0159en\u00e9 m\u00e9dium v potrub\u00ed, ovliv\u0148uj\u00ed rozm\u011bry pr\u016ftokov\u00e9ho profilu a v\u00fdstelku elektromagnetick\u00e9ho pr\u016ftokom\u011bru, tak\u017ee obecn\u00e1 univerz\u00e1lnost elektromagnetick\u00e9ho pr\u016ftokom\u011bru je relativn\u011b n\u00edzk\u00e1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ultrazvukov\u00fd pr\u016ftokom\u011br vyu\u017e\u00edv\u00e1 vn\u011bj\u0161\u00ed up\u00ednac\u00ed a z\u00e1suvnou mont\u00e1\u017e, tak\u017ee v tomto ohledu nevznikaj\u00ed \u017e\u00e1dn\u00e9 pot\u00ed\u017ee. Lze jej pou\u017e\u00edt v potrub\u00ed r\u016fzn\u00fdch pr\u016fm\u011br\u016f a pro m\u011b\u0159en\u00ed r\u016fzn\u00fdch m\u00e9di\u00ed, a jeho univerz\u00e1lnost je relativn\u011b dobr\u00e1.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6. Cyklus \u00fadr\u017ebov\u00fdch prohl\u00eddek se li\u0161\u00ed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kontrola elektromagnetick\u00e9ho pr\u016ftokom\u011bru se prov\u00e1d\u00ed jednou za dva roky.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kontrola ultrazvukov\u00e9ho pr\u016ftokom\u011bru se prov\u00e1d\u00ed jednou za t\u0159i roky.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">7. Zkontrolujte, zda se polo\u017eky \u00fadr\u017eby li\u0161\u00ed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">U elektromagnetick\u00e9ho pr\u016ftokom\u011bru je t\u0159eba zkontrolovat, zda do vn\u011bj\u0161\u00edho za\u0159\u00edzen\u00ed nevnikla voda nebo jin\u00e9 l\u00e1tky, zda nedo\u0161lo ke zv\u00fd\u0161en\u00ed intenzity elektromagnetick\u00e9ho pole v jeho bl\u00edzkosti nebo zda p\u0159es pr\u016ftokom\u011br nevedou \u017e\u00e1dn\u00e9 kabely, nebo\u0165 v\u0161echny tyto faktory ovliv\u0148uj\u00ed m\u011b\u0159en\u00ed elektromagnetick\u00e9ho pr\u016ftokom\u011bru.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ultrazvukov\u00e9 pr\u016ftokom\u011bry jsou mnohem prakti\u010dt\u011bj\u0161\u00ed. P\u0159i \u00fadr\u017eb\u011b sta\u010d\u00ed pouze zkontrolovat, zda jsou hodnota SQ zobrazen\u00e1 na pr\u016ftokom\u011bru, pom\u011br rychlosti zvuku a dal\u0161\u00ed parametry v po\u0159\u00e1dku. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pokud se vyskytne probl\u00e9m s nam\u011b\u0159en\u00fdmi hodnotami, m\u016f\u017eete zkontrolovat, zda se v m\u00edst\u011b sn\u00edma\u010de nenach\u00e1zej\u00ed ciz\u00ed p\u0159edm\u011bty nebo zda nen\u00ed sn\u00edma\u010d uvoln\u011bn\u00fd.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">8. R\u016fzn\u00e1 oblast\u00ed pou\u017eit\u00ed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Elektromagnetick\u00e9 pr\u016ftokom\u011bry vyu\u017e\u00edvaj\u00ed k m\u011b\u0159en\u00ed p\u0159edev\u0161\u00edm elektromagnetick\u00e9 vlny. Elektromagnetick\u00e9 vlny se vyzna\u010duj\u00ed vysokou frekvenc\u00ed a mal\u00fdm \u00fatlumem. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u011b\u0159ic\u00ed rozsah vlnovodu je rovn\u011b\u017e pom\u011brn\u011b velk\u00fd. Proto se pou\u017e\u00edv\u00e1 p\u0159edev\u0161\u00edm u z\u00e1sobn\u00edch n\u00e1dr\u017e\u00ed. Pr\u016fm\u011br elektromagnetick\u00fdch pr\u016ftokom\u011br\u016f m\u016f\u017ee p\u0159esahovat DN2000.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ultrazvukov\u00e9 pr\u016ftokom\u011bry vyu\u017e\u00edvaj\u00ed k m\u011b\u0159en\u00ed p\u0159edev\u0161\u00edm zvukov\u00e9 vlny. Frekvence t\u011bchto zvukov\u00fdch vln je n\u00edzk\u00e1, m\u011b\u0159ic\u00ed jednotka je mal\u00e1 a oblast pou\u017eit\u00ed je relativn\u011b \u00fazk\u00e1. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P\u0159i m\u011b\u0159en\u00ed pr\u016ftoku ve vodovodn\u00edch potrub\u00edch s velk\u00fdm pr\u016fm\u011brem maj\u00ed trubkov\u00e9 ultrazvukov\u00e9 pr\u016ftokom\u011bry jen z\u0159\u00eddka kalibr vy\u0161\u0161\u00ed ne\u017e DN800.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Vysv\u011btlen\u00ed principu fungov\u00e1n\u00ed ultrazvukov\u00e9ho pr\u016ftokom\u011bru | Principy fungov\u00e1n\u00ed\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/JRKlR4YgMHw?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Souvisej\u00edc\u00ed n\u00e1vody<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.kcsensor.com\/cs\/ultrasonic-products-frequently-asked-questions-answered\/\">Odpov\u011bdi na nej\u010dast\u011bj\u0161\u00ed dotazy t\u00fdkaj\u00edc\u00ed se ultrazvukov\u00fdch produkt\u016f<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Item comparison Electromagnetic Flowmeter Ultrasonic Flow Meter working principle Faraday&#8217;s law of electromagnetic induction Time difference between forward and reverse flow of ultrasonic waves measurable range Liquid with conductivity \u22655uS\/cm Liquid, gas and steam can be measured installation method Tube type\/plug-in type Pipe section\/plug-in\/clamp-on installation conditions Closure installation Installation under pressure installation cost high Low [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":14463,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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