{"id":154702,"date":"2021-02-26T14:22:57","date_gmt":"2021-02-26T14:22:57","guid":{"rendered":"https:\/\/blog.hannaservice.eu\/ph-merenja\/"},"modified":"2022-10-07T14:36:19","modified_gmt":"2022-10-07T14:36:19","slug":"ph-merenja","status":"publish","type":"post","link":"https:\/\/blog.hannaservice.eu\/sr\/ph-merenja\/","title":{"rendered":"pH Merenja"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"154702\" class=\"elementor elementor-154702 elementor-3037\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d60f82d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d60f82d\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-bd5b8ed\" data-id=\"bd5b8ed\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-90c495f elementor-widget elementor-widget-text-editor\" data-id=\"90c495f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Hanna Instruments nudi instrumente sa jednim i vi\u0161e parametara kako bi udovoljila raznim zahtevima za ispitivanje.<\/p>\n<h2>Koriste\u0107i jedan parametar<\/h2>\n<p>Hanna instrumenti sa jednim parametrom nude jednostavna, ta\u010dna i efikasna merenja usmerena na, kao \u0161to naziv govori, jedan parametar. Oni su vrlo pogodni za fokusirano ispitivanje gdje se jedan parametar mora testirati brzo i jednostavno. U principu su jednostavni za rad i mogu se koristiti od strane netehni\u010dkih korisnika.<\/p>\n<h2>Kori\u0161tenje multiparametara<\/h2>\n<p>Prednost Hanna multiparametarskih instrumenata je \u0161to korisnik mo\u017ee odabrati jedan mera\u010d sa mogu\u0107no\u0161\u0107u merenja vi\u0161e parametara.<\/p>\n<p>Vi\u0161eparametarski instrumenti nude razli\u010dita operativna re\u0161enja koja odgovaraju mno\u0161tvu zahteva i dostupni su u dve primarne konfiguracije:<\/p>\n<p>Vi\u0161eparametarski mera\u010di koji mogu meriti dva ili tri parametra, ali istovremeno samo jedan parametar.<br \/>\nVi\u0161eparametarski mera\u010di koji nude dva ili tri parametra izmerena istovremeno &#8211; korisno u eksperimentalnim i istra\u017eiva\u010dkim primenama gde je uticaj izme\u0111u parametara va\u017ean faktor. Vi\u0161e ulaza pru\u017ea mogu\u0107nost istovremenog merenja.<br \/>\nulaz za merenje pH<br \/>\nHanna mera\u010di uglavnom se isporu\u010duju u dva razli\u010dita tipa spajanja elektroda: BNC ili DIN.<\/p>\n<p>BNC konektor: BNC (Bayonet Neil-Concelman) uobi\u010dajeni je konektor koji se koristi za ure\u0111aje koaksijalnih kablova. BNC konekcija obi\u010dno se koristi za kombinovane elektrode i polu\u0107elijske elektrode koje zahtevaju zasebnu referentnu sondu i zasebni referentni ulaz.<\/p>\n<p>DIN konektor: DIN (Deutches Institut f\u00fcr Normung) je kru\u017eni konektor. Koristi se za spajanje poja\u010danih elektroda za merenje pH. Elektrode koje koriste DIN konektor imaju ugra\u0111eni senzor temperature.<\/p>\n<p>Ulaz temperature<br \/>\nTemperatura uti\u010de na merenja pH. Kao takva, za t\u010dna merenja potrebna je temperaturna kompenzacija. Kompenzacija temperature mo\u017ee se dobiti na tri na\u010dina:<\/p>\n<p>Zasebna sonda posebno za merenje temperature<br \/>\nSonda s ugra\u0111enim temperaturnim senzorom.<br \/>\nRu\u010dno pode\u0161avanje temperature<br \/>\nAko unos temperature nije prisutan, mnogi instrumenti i dalje nude mogu\u0107nost ru\u010dnog pode\u0161avanja temperature prema vanjskoj referentnoj temperaturi.<\/p>\n<p>Merenje pH Kompenzacija temperature<br \/>\nO\u010ditavanja pH moraju se kompenzovati temperaturom kako bi se dobili ta\u010dni rezultati. Izvor merenja temperature mo\u017ee biti iz temperaturnog senzora ili iz trimera koji se ru\u010dno pode\u0161ava. U oba slu\u010daja, instrument pode\u0161ava o\u010ditanje pH kako bi nadoknadio promene u pH senzor. Nadokna\u0111ivanje pH daje stvarni pH na temperaturi merenja.<\/p>\n<p>mV \u010citanje<br \/>\nHanna mera\u010di sa mV funkcijom nude mogu\u0107nost o\u010ditavanja mV potencijala sa pH, ORP ili ISE elektrode.Relativni mV omogu\u0107ava korisniku da nadoknadi mV razliku generisanu iz senzora ili referenci.<\/p>\n<p>kalibracija pH \/ ISE<br \/>\nKalibraciju pH treba izvoditi svakodnevno ili svaki put kad zapo\u010dne nova serija o\u010ditavanja. Sve pogre\u0161ke tokom kalibracije uticat \u0107e na sva o\u010ditanja dok se ne izvr\u0161i nova kalibracija. Pogre\u0161ke tokom postupka kalibracije mogu se ukloniti ako se slede standardni postupci kalibracije.<\/p>\n<p>Hanna preporu\u010duje slede\u0107i standardni postupak kalibracije:<\/p>\n<p>O\u010distite i aktivirajte elektrodu prije kalibracije.<br \/>\nKoristite sve\u017ee pH pufere i standarde.<br \/>\nIsperite elektrodu pro\u010di\u0161\u0107enom vodom tokom postupka kalibracije kako biste izbegli one\u010di\u0161\u0107enje pufera, a zatim isperite puferom ili standardom.<br \/>\nPri\u010dekajte stabilno o\u010ditanje pre potvrde ta\u010dke kalibracije.<br \/>\nKompenzacija temperature o\u010ditanja pH i pH pufera.<br \/>\nKalibracija je klju\u010dna komponenta za osiguravanje ta\u010dnih o\u010ditanja tokom merenja pH, imaju\u0107i to na umu, Hanna opskrbljuje svaki na\u0161 pH instrument po\u010detnim paketom rastvora za kalibraciju.<\/p>\n<p>pH CAL Check \u2122<br \/>\nMnogi instrumenti imaju Hanninu ekskluzivnu tehnologiju pH CAL Check.CAL Check sistem je dijagnostike koji osigurava ta\u010dna o\u010ditanja pH vridnosti svaki put.Upozoravaju\u0107i korisnike na potencijalne probleme tokom postupka kalibracije, sustav CAL Check elimini\u0161e pogre\u0161na o\u010ditanja zbog prljavih ili neispravnih pH elektroda ili kontaminiranog pH puferskog rastvora tokom kalibracije.<\/p>\n<p>Tokom postupka kalibracije korisnici \u0107e se zatra\u017eiti korak-po-korak, uputa na ekranu. Nakon kalibracije, elektroda se procenjuje i osigurava se stanje i vreme odziva. Ovisno o mera\u010du, ovo mo\u017ee biti grafi\u010dka informacija o GLP-u.<\/p>\n<p>Pogre\u0161ke u ba\u017edarenju<br \/>\nInstrumenti koji koriste Hanninu tehnologiju CAL Check mogu proceniti elektrodu tokom kalibracije i sa\u010duvati istoriju parametara koji opisuju kvalitet elektrode za pore\u0111enje sa jedne kalibracije na drugu. Tokom kalibracije vrlo je mala degradacija tih parametara normalna i mo\u017ee se o\u010dekivati. Velika promena parametara ozna\u010dava pogre\u0161ku u postupku kalibracije, poput prljave elektrode.<\/p>\n<p>&nbsp;<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Hanna Instruments nudi instrumente sa jednim i vi\u0161e parametara kako bi udovoljila raznim zahtevima za [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":2815,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","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":"default","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":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[377],"tags":[],"class_list":["post-154702","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-laboratorija"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - 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