{"id":364,"date":"2023-06-20T15:36:27","date_gmt":"2023-06-20T15:36:27","guid":{"rendered":"https:\/\/physigeek.com\/tr\/pirometre\/"},"modified":"2023-06-20T15:36:27","modified_gmt":"2023-06-20T15:36:27","slug":"pirometre","status":"publish","type":"post","link":"https:\/\/physigeek.com\/tr\/pirometre\/","title":{"rendered":"Pirometre"},"content":{"rendered":"

Bu makalede pirometrelerin ne oldu\u011fu ve ne i\u00e7in kullan\u0131ld\u0131\u011f\u0131 a\u00e7\u0131klanmaktad\u0131r. B\u00f6ylece bir pirometrenin nas\u0131l \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131, farkl\u0131 pirometre t\u00fcrlerinin neler oldu\u011funu ve pirometrelerin avantaj ve dezavantajlar\u0131n\u0131 \u00f6\u011freneceksiniz.<\/p>\n

<\/span>Pirometre nedir?<\/span><\/h2>\n

Pirometre<\/strong> , bir v\u00fccudun s\u0131cakl\u0131\u011f\u0131n\u0131 onunla temas etmeden \u00f6l\u00e7menizi sa\u011flayan bir cihazd\u0131r. Ba\u015fka bir deyi\u015fle pirometre, s\u0131cakl\u0131\u011f\u0131 uzaktan \u00f6l\u00e7en bir termometredir.<\/p>\n

\u00d6rne\u011fin pirometre a\u015f\u0131r\u0131 s\u0131cak metallerin (+600 \u00baC) s\u0131cakl\u0131\u011f\u0131n\u0131 \u00f6l\u00e7ebilir. A\u00e7\u0131k\u00e7as\u0131 metale temas ettirilerek bu s\u0131cakl\u0131k de\u011ferlerinin belirlenmesi imkans\u0131z olacakt\u0131r. A\u015fa\u011f\u0131da bu t\u00fcr \u00f6l\u00e7\u00fcm cihazlar\u0131n\u0131n daha fazla uygulamas\u0131n\u0131 g\u00f6rece\u011fiz.<\/p>\n

Bir pirometrenin \u00e7al\u0131\u015fmas\u0131, v\u00fccut s\u0131cakl\u0131\u011f\u0131n\u0131n hesaplanabilece\u011fi v\u00fccut taraf\u0131ndan yay\u0131lan radyasyonun \u00f6l\u00e7\u00fclmesine dayan\u0131r. <\/p>\n

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Bu nedenle pirometre ile termometre aras\u0131ndaki fark, s\u0131cakl\u0131\u011f\u0131 \u00f6l\u00e7me y\u00f6nteminde yatmaktad\u0131r. Bir pirometre v\u00fccudun s\u0131cakl\u0131\u011f\u0131n\u0131 belli bir mesafeden \u00f6l\u00e7ebilirken, bir termometrenin v\u00fccutla fiziksel temas halinde olmas\u0131 gerekir. Ek olarak pirometreler termometrelere g\u00f6re \u00e7ok daha geni\u015f s\u0131cakl\u0131k aral\u0131klar\u0131n\u0131 \u00f6l\u00e7ebilir.<\/p>\n

Pirometrenin envanteri bilinmemekle birlikte, icad\u0131, pirometreye \u00e7ok benzeyen cihazlar\u0131 ba\u011f\u0131ms\u0131z olarak geli\u015ftiren Hollandal\u0131 Pieter van Musschenbroek ve \u0130ngiliz Josiah Wedgwood’a atfedilmektedir. <\/p>\n

<\/span> Pirometre nas\u0131l \u00e7al\u0131\u015f\u0131r?<\/span><\/h2>\n

Art\u0131k pirometrenin tan\u0131m\u0131n\u0131 bildi\u011fimize g\u00f6re bu \u00f6l\u00e7\u00fcm cihaz\u0131n\u0131n \u00e7al\u0131\u015fma prensibine bakal\u0131m.<\/p>\n

S\u0131cakl\u0131\u011f\u0131 0 K’den b\u00fcy\u00fck olan herhangi bir cisim, de\u011feri s\u0131cakl\u0131\u011f\u0131na ba\u011fl\u0131 olan termal radyasyon yayar. Bu nedenle, v\u00fccut ne kadar s\u0131cak olursa, yayd\u0131\u011f\u0131 termal radyasyon da o kadar b\u00fcy\u00fck olur.<\/p>\n

Bir pirometrenin \u00e7al\u0131\u015fmas\u0131,<\/strong> bir cismin s\u0131cakl\u0131\u011f\u0131n\u0131 yayd\u0131\u011f\u0131 termal radyasyonla ili\u015fkilendiren Stefan-Boltzmann yasas\u0131na dayan\u0131r. B\u00f6ylece pirometre v\u00fccut taraf\u0131ndan yay\u0131lan radyasyonu \u00f6l\u00e7er ve Stefan-Boltzmann yasas\u0131n\u0131 uygulayarak v\u00fccut s\u0131cakl\u0131\u011f\u0131n\u0131 hesaplar.<\/p>\n

Daha do\u011frusu Stefan-Boltzmann yasas\u0131n\u0131n form\u00fcl\u00fc \u015fu \u015fekildedir:<\/p>\n

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\"E<\/p>\n<\/p>\n

Alt\u0131n:<\/p>\n