Rancang Bangun Sistem Pengukuran Resistivitas Geolistrik dengan menggunakan Sumber Arus Konstan
Abstract
Rancang bangun sistem pengukuran resistivitas geolistrik dengan menggunakan sumber arus konstan telah berhasil dibuat dan dianalisis. Sistem pengukuran resistivitas geolistrik terdiri atas rangkaian konverter boost, sumber arus konstan, dan mikrokontroler sebagai sistem kendali proses pengukuran dan akuisisi data resistivitas geolistrik berupa data resistansi. Sistem akuisisi data menggunakan prinsip hukum Ohm, dengan metode geolistrik Wenner. Sumber arus konstan yang berhasil diimplementasikan pada sistem resistivitas geolistrik yakni arus sebesar 0,1 mA bekerja pada resistansi 0,4 sampai 2,345 M dan arus 1mA bekerja pada resistansi 0,4 hingga 8,53 k . Serta pada pengukuran resistansi dapat terukur dengan baik pada pengukuran resistasi 33 hingga 470 k.
Abstract
Design of geoelectric resistivity measurement system using a constant current source has been successfully created and analyzed. Geoelectric resistivity measurement system consists of a boost converter circuit, constant current source, and a microcontroller as the control system in the process of measurement and data acquisition resistivity geoelectric form of resistance data. Data acquisition system using the principles of Ohm’s law, the geoelectric method of Wenner. In this study, a constant current source that is successfully implemented on geoelectric resistivity that is a current of 0,1 mA work on resistance 0,4 until 2,345 M and a current of 1mA
is working on 0,4 resistance to 8,53 k. As well as the resistance measurement can be measured by either the resistance measurement 33
to 470 k.
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DOI: http://dx.doi.org/10.12962/j24604682.v12i2.1336
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