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İletkenlik Sıcaklıkla Nasıl Değişir?
İletkenlik, malzemelerin elektriği iletme yeteneklerini tanımlayan temel bir özelliktir. Elektronik, malzeme bilimi ve kimya gibi çeşitli alanlarda çok önemli bir faktördür. Ortaya çıkan yaygın sorulardan biri iletkenliğin sıcaklıkla değişip değişmediğidir. Bu sorunun cevabı, ele alınan malzemenin türüne bağlı olduğundan basit değildir.
| Model | EC-1800 Çevrimiçi İletkenlik Kontrol Cihazı |
| Aralık | 0-2000/4000uS/cm 0-20/200mS/cm |
| 0-1000/2000PPM | |
| Doğruluk | yüzde 1,5, yüzde 2, yüzde 3 (FS) |
| Sıcaklık. Komp. | 25\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ya dayalı otomatik sıcaklık telafisi \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\℃ |
| Oper. Sıcaklık | Normal 0\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\～50\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\℃; Yüksek sıcaklık 0\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\～120\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\℃ |
| Sensör | C=0,1/1,0/10,0 cm-1 |
| Ekran | 128*64 LCD Ekran |
| İletişim | 4-20mA çıkış/2-10V/1-5V/RS485 |
| Çıkış | Yüksek/Alt limitli ikili röle kontrolü |
| Güç | AC 220V\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\u00b Yüzde 110 50/60Hz veya AC 110V\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\ üzde 110 50/60Hz veya DC24V/0,5A |
| Çalışma Ortamı | Ortam sıcaklığı:0\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\～50\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\℃ |
| Bağıl nem\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\≤85 yüzde | |
| Boyutlar | 96\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\×96\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\×100mm(H\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\×W\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\×L) |
| Delik Boyutu | 92\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\×92mm(H\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\×W) |
| Kurulum Modu | Gömülü |
Genel olarak metallerin iletkenliği artan sıcaklıkla azalır. Bunun nedeni, sıcaklık arttıkça metaldeki atomların daha güçlü titreşmesi ve elektron akışının bozulmasıdır. Bu olay “fonon saçılma etkisi” olarak bilinir. Sonuç olarak, metaldeki elektronlar titreşen atomlarla daha fazla çarpışmaya maruz kalır ve bu da iletkenliğin azalmasına yol açar.
Öte yandan, yarı iletkenlerin ve yalıtkanların iletkenliği genellikle sıcaklıkla birlikte artar. Bunun nedeni, daha yüksek sıcaklıklarda değerlik bandından iletim bandına daha fazla elektronun uyarılması ve elektriği iletebilecek daha fazla yük taşıyıcısı oluşmasıdır. Bu olay “içsel iletim” olarak bilinir.
İletkenlik ile sıcaklık arasındaki ilişkinin doğrusal olmadığına dikkat etmek önemlidir. Bazı malzemelerde iletkenlik başlangıçta sıcaklıkla artabilir, daha yüksek sıcaklıklarda ise azalabilir. Bu davranış “yarı iletken davranışı” olarak bilinir ve genellikle silikon ve germanyum gibi malzemelerde gözlenir.
İletkenlik-sıcaklık ilişkisini etkileyebilecek diğer bir faktör de malzemedeki yabancı maddelerdir. Bazı durumlarda, safsızlıkların varlığı belirli sıcaklıklarda iletkenliği artırabilir ve iletkenlik ile sıcaklık arasında monotonik olmayan bir ilişkiye yol açabilir.
İçsel faktörlere ek olarak, basınç gibi dış faktörler de malzemelerin farklı sıcaklıklarda iletkenliğini etkileyebilir. . Örneğin, bazı malzemelerde basınç uygulamak, atomlar arasındaki mesafeyi azaltarak ve elektron hareketliliğini artırarak iletkenliği artırabilir.
Genel olarak, iletkenlik ile sıcaklık arasındaki ilişki karmaşıktır ve malzemenin türü, safsızlıklar dahil olmak üzere çeşitli faktörlere bağlıdır. ve dış koşullar. İletkenliğin sıcaklıkla nasıl değiştiğini anlamak, belirli uygulamalara yönelik malzeme tasarlamak ve optimize etmek için çok önemlidir.
Sonuç olarak, iletkenlik sıcaklıkla değişebilir, ancak bu değişimin yönü ve büyüklüğü, dikkate alınan malzemeye bağlıdır. Metaller tipik olarak artan sıcaklıkla iletkenlikte bir azalma sergilerken, yarı iletkenler ve yalıtkanlar iletkenlikte bir artış gösterebilir. İletkenlik ve sıcaklık arasındaki ilişki, yabancı maddeler ve dış koşullar gibi faktörlerden etkilenir. Araştırmacılar, iletkenliğin sıcaklıkla nasıl değiştiğini inceleyerek malzemelerin davranışları hakkında değerli bilgiler edinebilir ve çeşitli uygulamalar için özelleştirilmiş özelliklere sahip yeni malzemeler geliştirebilirler.
