{"id":57261,"date":"2023-04-25T14:45:45","date_gmt":"2023-04-25T19:45:45","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-is-temperature-transducer\/"},"modified":"2025-01-27T06:17:21","modified_gmt":"2025-01-27T11:17:21","slug":"what-is-temperature-transducer","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/what-is-temperature-transducer\/","title":{"rendered":"Teplotn\u00ed sn\u00edma\u010de: princip, druhy a pou\u017eit\u00ed"},"content":{"rendered":"<p>Teplotn\u00ed \u010didlo, neboli teplotn\u00ed transduktor, je za\u0159\u00edzen\u00ed, kter\u00e9 p\u0159ev\u00e1d\u00ed tepelnou energii na m\u011b\u0159iteln\u00fd sign\u00e1l, obvykle elektrick\u00fd.  Tento sign\u00e1l pak m\u016f\u017ee b\u00fdt pou\u017eit k ur\u010den\u00ed teploty m\u00e9dia, s n\u00edm\u017e \u010didlo p\u0159ich\u00e1z\u00ed do styku.  Existuje \u0161irok\u00e1 \u0161k\u00e1la teplotn\u00edch \u010didel, li\u0161\u00edc\u00edch se principem fungov\u00e1n\u00ed, p\u0159esnost\u00ed, rozsahem m\u011b\u0159en\u00ed a odolnost\u00ed v\u016f\u010di r\u016fzn\u00fdm podm\u00ednk\u00e1m.  V\u00fdb\u011br spr\u00e1vn\u00e9ho \u010didla z\u00e1vis\u00ed na specifick\u00fdch po\u017eadavc\u00edch aplikace.<\/p>\n<h3>Princip fungov\u00e1n\u00ed teplotn\u00edch \u010didel<\/h3>\n<p>Teplotn\u00ed \u010didla funguj\u00ed na z\u00e1klad\u011b r\u016fzn\u00fdch fyzik\u00e1ln\u00edch jev\u016f, kter\u00e9 jsou citliv\u00e9 na zm\u011bny teploty.  Mezi nej\u010dast\u011bj\u0161\u00ed principy pat\u0159\u00ed:<\/p>\n<ul>\n<li>\n<p><strong>Odporov\u00e9 \u010didlo (RTD):<\/strong> Zm\u011bna elektrick\u00e9ho odporu materi\u00e1lu (obvykle platiny, niklu nebo m\u011bdi) s teplotou.  RTD \u010didla vynikaj\u00ed vysokou p\u0159esnost\u00ed a stabilitou.<\/p>\n<\/li>\n<li>\n<p><strong>Termistor:<\/strong> Zm\u011bna elektrick\u00e9ho odporu polovodi\u010dov\u00e9ho materi\u00e1lu s teplotou. Termistory jsou obvykle levn\u011bj\u0161\u00ed ne\u017e RTD \u010didla, ale jejich p\u0159esnost a stabilita m\u016f\u017ee b\u00fdt ni\u017e\u0161\u00ed.<\/p>\n<\/li>\n<li>\n<p><strong>Termo\u010dl\u00e1nek:<\/strong> Generov\u00e1n\u00ed elektrick\u00e9ho nap\u011bt\u00ed na styku dvou r\u016fzn\u00fdch kov\u016f v z\u00e1vislosti na teplot\u011b. Termo\u010dl\u00e1nky jsou robustn\u00ed a odoln\u00e9, ale jejich p\u0159esnost m\u016f\u017ee b\u00fdt ni\u017e\u0161\u00ed ne\u017e u RTD \u010didel.<\/p>\n<\/li>\n<li>\n<p><strong>Infra\u010derven\u00fd teplom\u011br (pyrometr):<\/strong> M\u011b\u0159en\u00ed teploty na z\u00e1klad\u011b infra\u010derven\u00e9ho z\u00e1\u0159en\u00ed emitovan\u00e9ho objektem. Pyrometry jsou bezkontaktn\u00ed a umo\u017e\u0148uj\u00ed m\u011b\u0159en\u00ed vysok\u00fdch teplot.<\/p>\n<\/li>\n<\/ul>\n<h3>Typy teplotn\u00edch \u010didel a jejich vlastnosti<\/h3>\n<p>N\u00e1sleduj\u00edc\u00ed tabulka shrnuje kl\u00ed\u010dov\u00e9 vlastnosti r\u016fzn\u00fdch typ\u016f teplotn\u00edch \u010didel:<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Typ \u010didla<\/th>\n<th>Princip fungov\u00e1n\u00ed<\/th>\n<th>P\u0159esnost<\/th>\n<th>Rozsah m\u011b\u0159en\u00ed (\u00b0C)<\/th>\n<th>Robustnost<\/th>\n<th>Cena<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>RTD (Pt100)<\/td>\n<td>Zm\u011bna odporu platiny<\/td>\n<td>Vysok\u00e1<\/td>\n<td>-200 a\u017e +850<\/td>\n<td>Dobr\u00e1<\/td>\n<td>St\u0159edn\u00ed<\/td>\n<\/tr>\n<tr>\n<td>Termistor<\/td>\n<td>Zm\u011bna odporu polovodi\u010de<\/td>\n<td>St\u0159edn\u00ed<\/td>\n<td>-50 a\u017e +300<\/td>\n<td>Dobr\u00e1<\/td>\n<td>N\u00edzk\u00e1<\/td>\n<\/tr>\n<tr>\n<td>Termo\u010dl\u00e1nek (K typ)<\/td>\n<td>Seebeck\u016fv jev<\/td>\n<td>St\u0159edn\u00ed<\/td>\n<td>-200 a\u017e +1350<\/td>\n<td>Vysok\u00e1<\/td>\n<td>N\u00edzk\u00e1<\/td>\n<\/tr>\n<tr>\n<td>Infra\u010derven\u00fd pyrometr<\/td>\n<td>Infra\u010derven\u00e9 z\u00e1\u0159en\u00ed<\/td>\n<td>St\u0159edn\u00ed a\u017e vysok\u00e1<\/td>\n<td>Z\u00e1vis\u00ed na modelu<\/td>\n<td>Dobr\u00e1<\/td>\n<td>Vysok\u00e1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Aplikace teplotn\u00edch \u010didel<\/h3>\n<p>Teplotn\u00ed \u010didla nach\u00e1zej\u00ed \u0161irok\u00e9 uplatn\u011bn\u00ed v r\u016fzn\u00fdch pr\u016fmyslov\u00fdch odv\u011btv\u00edch a v ka\u017edodenn\u00edm \u017eivot\u011b.  Pou\u017e\u00edvaj\u00ed se nap\u0159\u00edklad v:<\/p>\n<ul>\n<li><strong>Pr\u016fmyslov\u00e9 automatizaci:<\/strong> \u0158\u00edzen\u00ed teplotn\u00edch proces\u016f v chemick\u00e9m, potravin\u00e1\u0159sk\u00e9m a farmaceutick\u00e9m pr\u016fmyslu.<\/li>\n<li><strong>Automotive:<\/strong> Monitorov\u00e1n\u00ed teploty motoru, oleje a dal\u0161\u00edch syst\u00e9m\u016f.<\/li>\n<li><strong>B\u00edl\u00e9 techniky:<\/strong> \u0158\u00edzen\u00ed teploty v ledni\u010dk\u00e1ch, pra\u010dk\u00e1ch a dal\u0161\u00edch spot\u0159ebi\u010d\u00edch.<\/li>\n<li><strong>Medic\u00edn\u011b:<\/strong> M\u011b\u0159en\u00ed t\u011blesn\u00e9 teploty.<\/li>\n<li><strong>Meteorologii:<\/strong> M\u011b\u0159en\u00ed teploty vzduchu a p\u016fdy.<\/li>\n<\/ul>\n<h3>V\u00fdb\u011br spr\u00e1vn\u00e9ho teplotn\u00edho \u010didla<\/h3>\n<p>V\u00fdb\u011br vhodn\u00e9ho teplotn\u00edho \u010didla z\u00e1vis\u00ed na n\u011bkolika faktorech, v\u010detn\u011b po\u017eadovan\u00e9 p\u0159esnosti, rozsahu m\u011b\u0159en\u00ed, prost\u0159ed\u00ed, ve kter\u00e9m bude \u010didlo pracovat, a rozpo\u010dtu.  Je d\u016fle\u017eit\u00e9 zv\u00e1\u017eit odolnost \u010didla v\u016f\u010di vlhkosti, tlaku, vibrac\u00edm a dal\u0161\u00edm vn\u011bj\u0161\u00edm vliv\u016fm.<\/p>\n<p>Teplotn\u00ed \u010didla jsou nezbytnou sou\u010d\u00e1st\u00ed mnoha syst\u00e9m\u016f a za\u0159\u00edzen\u00ed.  D\u00edky sv\u00e9 schopnosti p\u0159esn\u011b m\u011b\u0159it teplotu hraj\u00ed kl\u00ed\u010dovou roli v \u0159\u00edzen\u00ed proces\u016f, monitorov\u00e1n\u00ed syst\u00e9m\u016f a zaji\u0161t\u011bn\u00ed bezpe\u010dnosti.  Spr\u00e1vn\u00fd v\u00fdb\u011br \u010didla je z\u00e1sadn\u00ed pro dosa\u017een\u00ed optim\u00e1ln\u00edch v\u00fdsledk\u016f.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Teplotn\u00ed \u010didlo, neboli teplotn\u00ed transduktor, je za\u0159\u00edzen\u00ed, kter\u00e9 p\u0159ev\u00e1d\u00ed tepelnou energii na m\u011b\u0159iteln\u00fd sign\u00e1l, obvykle elektrick\u00fd. Tento sign\u00e1l pak m\u016f\u017ee b\u00fdt pou\u017eit k ur\u010den\u00ed teploty m\u00e9dia, s n\u00edm\u017e \u010didlo p\u0159ich\u00e1z\u00ed do styku. Existuje \u0161irok\u00e1 \u0161k\u00e1la teplotn\u00edch \u010didel, li\u0161\u00edc\u00edch se principem fungov\u00e1n\u00ed, p\u0159esnost\u00ed, rozsahem m\u011b\u0159en\u00ed a odolnost\u00ed v\u016f\u010di r\u016fzn\u00fdm podm\u00ednk\u00e1m. V\u00fdb\u011br spr\u00e1vn\u00e9ho \u010didla z\u00e1vis\u00ed na specifick\u00fdch<\/p>\n","protected":false},"author":1,"featured_media":26938,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-57261","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/57261","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/comments?post=57261"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/57261\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/26938"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=57261"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=57261"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=57261"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}