{"id":668408,"date":"2024-08-04T18:25:37","date_gmt":"2024-08-04T17:25:37","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=668408"},"modified":"2024-08-04T18:25:37","modified_gmt":"2024-08-04T17:25:37","slug":"termokupller-sicakligi-nasil-olcer","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/tr\/termokupller-sicakligi-nasil-olcer\/","title":{"rendered":"Termokupller S\u0131cakl\u0131\u011f\u0131 Nas\u0131l \u00d6l\u00e7er?"},"content":{"rendered":"

Termokupller S\u0131cakl\u0131\u011f\u0131 Nas\u0131l \u00d6l\u00e7er? Termokupllerin s\u0131cakl\u0131k \u00f6l\u00e7me prensipleri ve end\u00fcstrideki uygulamalar\u0131n\u0131 k\u0131sa ve \u00f6z bir \u015fekilde \u00f6\u011frenin.<\/p>\n

\"Termokupller<\/p>\n

Termokupller S\u0131cakl\u0131\u011f\u0131 Nas\u0131l \u00d6l\u00e7er?<\/h2>\n

Termokupller, s\u0131cakl\u0131\u011f\u0131 \u00f6l\u00e7mek i\u00e7in yayg\u0131n olarak kullan\u0131lan basit ve etkili cihazlard\u0131r. Bir termokupl, iki farkl\u0131 metalin birle\u015ftirilmesiyle olu\u015fturulur. Bu metallerin ba\u011flant\u0131 noktalar\u0131nda s\u0131cakl\u0131k de\u011fi\u015fti\u011finde, elektriksel bir gerilim olu\u015fur ve bu gerilim s\u0131cakl\u0131kla do\u011fru orant\u0131l\u0131d\u0131r. \u0130\u015fte termokupllerin nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131 ve s\u0131cakl\u0131\u011f\u0131 nas\u0131l \u00f6l\u00e7t\u00fc\u011f\u00fc hakk\u0131nda bilmeniz gerekenler.<\/p>\n

Termoelektrik Etki<\/h2>\n

Termokupllerin \u00e7al\u0131\u015fma prensibi, termoelektrik etki<\/i> veya Seebeck etkisi<\/i> ad\u0131 verilen bir fenomene dayan\u0131r. Bu etki, farkl\u0131 iki metalin birle\u015fim noktas\u0131nda bir s\u0131cakl\u0131k fark\u0131 olu\u015ftu\u011funda elektromotor kuvveti (emk) ad\u0131 verilen bir voltaj olu\u015fturmas\u0131d\u0131r.<\/p>\n

Termokupl Bile\u015fenleri<\/h2>\n
    \n
  • Referans Ucu:<\/b> Sabit bir s\u0131cakl\u0131kta (genellikle 0 \u00b0C ya da ortam s\u0131cakl\u0131\u011f\u0131) tutulur.<\/li>\n
  • S\u0131cak U\u00e7:<\/b> \u00d6l\u00e7\u00fcm yap\u0131lacak s\u0131cakl\u0131k b\u00f6lgesine yerle\u015ftirilir.<\/li>\n
  • Farkl\u0131 Metal Telle:<\/b> Bu iki u\u00e7 aras\u0131ndaki ba\u011flant\u0131y\u0131 sa\u011flar ve s\u0131cakl\u0131k fark\u0131na ba\u011fl\u0131 olarak voltaj \u00fcretir.<\/li>\n<\/ul>\n

    Gerilim ve S\u0131cakl\u0131k Aras\u0131ndaki \u0130li\u015fki<\/h2>\n

    Termokuplde olu\u015fan gerilim, iki u\u00e7 aras\u0131ndaki s\u0131cakl\u0131k fark\u0131yla ili\u015fkilidir ve bu ili\u015fki \u015fu \u015fekilde ifade edilebilir:<\/p>\n

    \\(\\Delta V = \\alpha \\cdot \\Delta T\\)<\/p>\n

    Burada:<\/p>\n

      \n
    1. \\(\\Delta V\\) = Termokupl u\u00e7lar\u0131 aras\u0131ndaki gerilim (voltaj)<\/li>\n
    2. \\(\\alpha\\) = Seebeck katsay\u0131s\u0131 (metal \u00e7iftine ba\u011fl\u0131 olarak de\u011fi\u015fen sabit bir de\u011fer)<\/li>\n
    3. \\(\\Delta T\\) = S\u0131cakl\u0131k fark\u0131 (s\u0131cak u\u00e7 ile referans u\u00e7 aras\u0131ndaki s\u0131cakl\u0131k fark\u0131)<\/li>\n<\/ol>\n

      Seebeck Katsay\u0131s\u0131<\/h2>\n

      Seebeck katsay\u0131s\u0131 (\\(\\alpha\\)), kullan\u0131lan metal \u00e7iftlerine ba\u011fl\u0131 olarak de\u011fi\u015fiklik g\u00f6sterir. Ayn\u0131 zamanda bu katsay\u0131, termokuplun kalibrasyonunda \u00f6nemli bir rol oynar. \u00d6rne\u011fin, bak\u0131r-konstantan bir termokuplun Seebeck katsay\u0131s\u0131, demir-konstantan termokuplinkiyle farkl\u0131 olacakt\u0131r.<\/p>\n

      Termokupl Tipleri<\/h2>\n

      Piyasada farkl\u0131 metal \u00e7iftlerinden olu\u015fan \u00e7e\u015fitli termokupl tipleri bulunmaktad\u0131r. \u0130\u015fte baz\u0131 yayg\u0131n termokupl tipleri:<\/p>\n

        \n
      • Tip K:<\/b> Nikel-Krom \/ Nikel-Al\u00fcminyum (geni\u015f s\u0131cakl\u0131k aral\u0131\u011f\u0131 ve dayan\u0131kl\u0131l\u0131\u011f\u0131 ile pop\u00fcler)<\/li>\n
      • Tip J:<\/b> Demir \/ Konstantan (d\u00fc\u015f\u00fck maliyetli ve orta s\u0131cakl\u0131k aral\u0131klar\u0131 i\u00e7in uygundur)<\/li>\n
      • Tip T:<\/b> Bak\u0131r \/ Konstantan (d\u00fc\u015f\u00fck s\u0131cakl\u0131k \u00f6l\u00e7\u00fcmleri i\u00e7in idealdir)<\/li>\n
      • Tip E:<\/b> Nikel-Krom \/ Konstantan (y\u00fcksek hassasiyet ve geni\u015f s\u0131cakl\u0131k aral\u0131\u011f\u0131 sunar)<\/li>\n<\/ul>\n

        Termokupl Kullan\u0131m Alanlar\u0131<\/h2>\n

        Termokupller bir\u00e7ok alanda kullan\u0131lmaktad\u0131r:<\/p>\n

          \n
        • Sanayi f\u0131r\u0131nlar\u0131nda ve kazanlar\u0131nda s\u0131cakl\u0131k \u00f6l\u00e7\u00fcm\u00fc<\/li>\n
        • Motor ve makine s\u0131cakl\u0131klar\u0131n\u0131n izlenmesi<\/li>\n
        • Kimya ve petrokimya tesislerinde proses kontrol\u00fc<\/li>\n
        • G\u0131da i\u015fleme ve koruma sekt\u00f6r\u00fcnde s\u0131cakl\u0131k izleme<\/li>\n<\/ul>\n

          Sonu\u00e7 olarak, termokupller pratiklikleri, geni\u015f s\u0131cakl\u0131k aral\u0131klar\u0131nda \u00e7al\u0131\u015fabilme yetenekleri ve dayan\u0131kl\u0131l\u0131klar\u0131 ile end\u00fcstride ve laboratuvarlarda yayg\u0131n olarak kullan\u0131lmaktad\u0131r.<\/p>\n","protected":false},"excerpt":{"rendered":"

          Termokupller S\u0131cakl\u0131\u011f\u0131 Nas\u0131l \u00d6l\u00e7er? Termokupllerin s\u0131cakl\u0131k \u00f6l\u00e7me prensipleri ve end\u00fcstrideki uygulamalar\u0131n\u0131 k\u0131sa ve \u00f6z bir \u015fekilde \u00f6\u011frenin.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[131],"tags":[],"yoast_head":"\nTermokupller S\u0131cakl\u0131\u011f\u0131 Nas\u0131l \u00d6l\u00e7er?<\/title>\n<meta name=\"description\" content=\"Termokupller S\u0131cakl\u0131\u011f\u0131 Nas\u0131l \u00d6l\u00e7er? 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