Rancang Bangun Sistem Pegontrolan Temperatur dan Waktu untuk Proses Heat Treatment

Authors

  • Sari Widya Fitri Jurusan Fisika FMIPA Universitas Andalas
  • Harmadi Harmadi Jurusan Fisika FMIPA Universitas Andalas
  • Wildian Wildian Jurusan Fisika FMIPA Universitas Andalas

DOI:

https://doi.org/10.25077/jfu.6.3.283-289.2017

Abstract

Telah dirancang sistem pengontrolan temperatur dan waktu otomatis menggunakan sensor termokopel tipe-k untuk proses heat treatment. Proses heat treatment dipengaruhi oleh beberapa parameter diantaranya temperatur, laju pemanasan, dan waktu tahan (holding time). Pengaturan temperatur dan laju pemanasan dilakukan dengan mengatur daya elemen pemanas menggunakan rangkaian driver optotriac (TRIAC BT139 dan optocoupler MOC3021). Pengontrolan waktu tahan dilakukan dengan menggunakan  timer sebagai pencacah waktu digital. Temperatur dan waktu sistem diatur user melalui keypad 4x4 sebagai setpoint kemudian data ditampilkan pada LCD karakter 2x16. Pada penelitian ini dilakukan pengujian sensitivitas sensor, pengujian temperatur maksimum dan waktu tahan maksimum sistem. Hasil pengujian menunjukkan bahwa tegangan keluaran sensor termokopel tipe-k sebanding dengan temperatur dengan sensitivitas 0.041 mV/oC. Temperatur maksimum sistem pengontrolan heat treatment adalah sebesar 188 oC dengan waktu tahan maksimum 5 jam.

 

Kata kunci: heat treatment, holding time, optotriac, termokopel tipe-k

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Published

2017-07-05

How to Cite

Fitri, S. W., Harmadi, H., & Wildian, W. (2017). Rancang Bangun Sistem Pegontrolan Temperatur dan Waktu untuk Proses Heat Treatment. Jurnal Fisika Unand, 6(3), 283–289. https://doi.org/10.25077/jfu.6.3.283-289.2017

Issue

Vol. 6 No. 3 (2017)

Section

Articles

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Copyright (c) 2017 Sari Widya Fitri, Harmadi Harmadi, Wildian Wildian

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