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All Journal Jurnal Materi dan Pembelajaran Fisika Lontar Physics Today JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah)
Setiawan, Indra Budi
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Astronomy Education Electrical & Electronics Engineering Energy Physics

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Resistivity of SnO2 Gas Sensor to Humidity, CO2 Gas, and Temperature in Food Decomposition Process Setiawan, Indra Budi; Toifur, Moh.; Ishafit, Ishafit; Okimustava, Okimustava; Hajatulloh, Ridlo; Susanto, Eko
Lontar Physics Today Vol 4, No 3 (2025): November 2025
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/lpt.v4i3.24866

Abstract

This study aims to determine the sensitivity of a gas sensor based on a Cu substrate coated with SnO2 through an electroplating process, involving variations in electrolyte solution temperature and thermal oxidation. The deposition parameters were set as follows: electrolyte solution prepared by dissolving SnCl2 in distilled water, applied voltage of 4.5 V, electrode distance of 3 cm, and electroplating duration of 3 minutes. Sensor sensitivity tests were carried out by observing the food decomposition process, placing both the food sample and sensor in a testing chamber. Data acquisition of temperature, humidity, CO2 concentration, and sensor resistance was conducted using transducers and Logger Pro software. Based on the results, the sensor sample with an electrolyte temperature of 60°C (sample B) exhibited better performance than the sensor sample with an electrolyte temperature of 30°C (sample A). Sample B demonstrated greater responsiveness to temperature changes, with a coefficient of determination R2 = 0.66943. It also showed better detection of CO2 concentration changes with R2 = 0.98225. This improvement is attributed to a more effective electroplating process, as indicated by the mass change and thickness of the SnO2 layer. The sensitivity of sample B, defined by the equation S([CO2]) = 9.42E-5 - 1.17E-9[CO2], was superior to that of sample A, which followed the equation S([CO2]) = -2.34E-4 + 4.25E-9[CO2], as shown in the plotted graphs. Sample B exhibited a negative linear curve with a gentle slope, indicating a stable gas sensor behaviour.
Pembuatan Sensor SnO₂ untuk Memantau Multi-Parameter dalam Proses Pembusukan Makanan Toifur, Moh.; Setiawan, Indra Budi; Ishafit; Hajatulloh, Ridlo; Okimustava; Susanto, Eko
JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol. 9 No. 2 (2025): November Edition
Publisher : Universitas Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/jipfri.v9i2.4440

Abstract

This study reports the development of a tin dioxide (SnO₂)-based gas sensor fabricated via the electroplating method for monitoring food spoilage. Urap vegetables were used as test samples to investigate variations in temperature, CO₂ concentration, humidity, and sensor resistance during the spoilage process. The results revealed that the SnO₂ sensor exhibited a clear response to temperature and CO₂ concentration, both of which showed a consistent decrease in resistance with increasing values. In contrast, no definitive correlation between resistance and humidity was observed. These findings highlight the potential of electroplated SnO₂ sensors as multi-parameter devices for real-time food spoilage monitoring. Such an approach could be further optimized for practical applications in smart packaging and food quality control, thereby supporting food safety and waste reduction.
Pengembangan Alat Percobaan Induksi Magnetik Pada Kawat Melingkar Berarus dengan Hall Effect Sensor UGN3503 Putri, Hanung Vernanda; Radiyono, Yohanes; Setiawan, Indra Budi
Jurnal Materi dan Pembelajaran Fisika Vol 12, No 1 (2022): Jurnal Materi dan Pembelajaran Fisika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1798.238 KB) | DOI: 10.20961/jmpf.v12i1.61193

Abstract

Artikel penelitian ini menjelaskan pembuatan alat percobaan Induksi Magnetik pada Kawat Melingkar Berarus untuk menunjukkan hubungan hubungan antara jari-jari lingkaran, banyak lilitan, dan arus listrik dengan menggunakan sensor efek hall UGN3503 dan sensor arus ACS712. Alat ini dapat menghitung besar induksi magnetik dan arus secara otomatis. Alat percobaan induksi magnetik yang dilengkapi sensor ini merupakan modifikasi dari alat percobaan yang menjelaskan desain praktikum pembelajaran sub materi induksi magnetik di kawat melingkar berarus yang konvensional. Alat ini tersusun dari tiga bagian utama, yaitu papan utama percobaan, rangkaian sumber arus listrik dan rangkaian sensor efek hall dan sensor arus. Papan utama percobaan terdiri atas papan kayu sepanjang 1 m dan lebar 40 cm, lilitan kawat dengan 5 variasi ukuran dan jumlah lilitan, serta saklar komutator. Rangkaian sumber arus terdiri dari power supply dan adaptor, serta pada rangkaian sensor terdiri atas sensor efek hall UGN3503 dan sensor arus ACS712 diletakkan di pada pusat lilitan. Hasil pembacaan sensor ditampilkan melalui LCD. Jumlah lilitan dan diameter yang bervariasi membuktikan pengaruh banyaknya jumlah lilitan dengan gaya magnet pada pusat kawat melingkar berarus. Prinsip kerja alat sesuai dengan hukum biot-savart, sehingga dapat digunakan untuk membelajarkan konsep persamaan biot savart yang digunakan sebagai dasar percobaan praktikum induksi magnetik. Berdasarkan hasil percobaan alat percobaan induksi magnetik ini sudah mampu mendeteksi dan menghitung besar induksi magnetik menggunakan sensor efek hall dan arusnya sudah terukur menggunakan sensor arus. Kekurangan pada alat ini, sensor harus diletakkan tepat berada di tengah lingkaran kawat, agar memberikan hasil yang presisi.
Co-Authors Eko Susanto Hajatulloh, Ridlo Ishafit Ishafit Ishafit Moh. Toifur Okimustava Okimustava Okimustava Putri, Hanung Vernanda Yohanes Radiyono