Pengukuran Permitivitas Dielektrik Bahan Kain Non Woven Menggunakan Kapasitansi Meter Arduino Uno Dan Prinsip Kerja Kapasitor Plat Sejajar

Andrian Wijayono(1*), Valentinus Galih Vidia Putra(2)

(1) Politeknik STTT Bandung
(2) Politeknik STTT Bandung
(*) Corresponding Author


Pada penelitian ini telah dilakukan penentuan konstanta permitivitas dielektrik bahan kain non woven secara eksperimen dengan menggunakan kapasitansi meter berbasis Arduino Uno dan prinsip kerja kapasitor plat sejajar. Penentuan konstanta permitivitas bahan kain non woven dilakukan dengan cara mengukur nilai kapasitansi yang divariasikan terhadap jarak antara plat yang berisi bahan dielektrik kain non woven. Pengukuran kapasitansi dilakukan dengan prinsip pengisian dan pengosongan kapasitor menggunakan perangkat mikrokontroler Arduino Uno. Proses pengisian dan pengosongan dilakukan dengan menggunakan susunan seri rangkaian resistor-kapasitor (RC) dengan tegangan sumber 5 Volt. Pada eksperimen ini telah digunakan sebuah plat sejajar dengan ukuran 29 × 30 cm sebagai elektroda kapasitor, serta sebuah perangkat resistor dengan ukuran 125 megaOhm. Hasil penelitian menunjukan bahwa perilaku pengisian dan pengosongan perangkat kapasitor plat-sejajar memiliki nilai R square > 0,9, yang menunjukan korelasi cukup baik antara hasil prediksi dan eksperimen pada pengukuran kapasitansi. Terdapat lima bahan dielektrik kain yang ditentukan dengan hasil dari yang terkecil sampai yang terbesar berturut-turut yaitu kain non woven polipropilen 31,44 gsm sebesar 1,0598, kain non woven polipropilen 43,72 gsm sebesar 1,0996, kain non woven polipropilen 52,31 gsm sebesar 1,1288, kain non woven polipropilen 74,12 gsm sebesar 1,1963, kain non woven polipropilen 80,87 gsm sebesar 1,2279. Telah ditemukan hubungan antara parameter gramasi (GSM) kain non woven polipropilen terhadap besaran nilai konstanta dielektrik terukur.


dielektrik, kapasitor plat sejajar, kapasitansi meter, Arduino Uno

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