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All Journal Spektra: Jurnal Fisika dan Aplikasinya
Dellia Yulita
Jurusan Fisika FMIPA Universitas Riau, Sp. Panam Pekanbaru
Aerospace Engineering Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics

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ANALISIS PENGARUH SUHU MINYAK KELAPA SAWIT (CPO) TERHADAP NILAI TAHANAN TERMAL MEMPERGUNAKAN PEMODELAN KURVA I(V) ISOTERMAL SENSOR PTC Dellia Yulita; Lazuardi Umar
Spektra: Jurnal Fisika dan Aplikasinya Vol 2 No 2 (2017): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 2 Nomor 2, Agustus 2017
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (428.456 KB) | DOI: 10.21009/SPEKTRA.022.08

Abstract

PTC level sensor for overfill protection works based on the thermal resistance (Rw). The sensor cannot identify high-temperature fluid in the container and determine the pump switching status “ON” and “OFF”. This is due to the influence of the medium temperature on the Rw. Analysis is performed by observing the Rw value of crude palm oil (CPO) as a result of the storage temperature. The Rw value was obtained from the modeling of I (U) sensor curve of EPCOS B59050D1100 with temperature variations ranging from 20°C to 80°C. The modeled area is then determined using the isothermal curve and is resulted Rw value of 110.2K/W. The ambient temperature influence on Rw can be modeled after polynomial equation. Compare to the previous air measurement, the thermal resistance in CPO has 62.6% vary than in the air. This value can be used to determine the position of the level sensor switch safely. Keywords: level sensors, PTC, thermal resistance, CPO, isothermal
Co-Authors Lazuardi Lazuardi