Browsing by Author "Setiadi, Rahmondia Nanda"
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Item ANALISA KARAKTERISTIK KELISTRIKAN TANAH GAMBUT DI DESA TELUK MERANTI KABUPATEN PELALAWAN(Elfitra, 2023-02) Noviana, Rina; Setiadi, Rahmondia NandaElectrical and physical properties of soil can be used as indicators to measure soil conditions in agriculture because of their fast and efficient measurements. One method developing agricultural applications to understand on land conditions by measuring the value of electrical conductivity and water content. The land investigated is peatland in Teluk Meranti Village, Riau. Measurements are carried out using the conductivity module and soil moisture sensor on variations in peat soil maturity, namely Fibrik, Hemik and Saprik. Measurements aree varriedin depth and concentration of water in order to evaluate water content and the electrical conductivity. The results showed that the electrical conductivity values is 18.9 S/m and the grade values 33.2 %. peat has the highest Electrical Conductivity and water content , These prove that physical properties affect the conductivity of peat soil.Item ANALISA KONTAMINASI LOGAM BERAT PADA TANAH MENGGUNAKAN PENGUKURAN SUSEPTIBILITAS MAGNETIK BERBASIS RANGKAIAN INTEGRATOR RL(Elfitra, 2022-05) Wulandari, Wulandari; Setiadi, Rahmondia NandaThe increase in the concentration of pollutants in the soil due to human activities is increasingly worrying. Soil management requires soil pollution measurement technology due to heavy metal contamination. Metal contaminants are indicators for the assessment of heavy metals in soil through analysis of magnetic susceptibility measurement data. The samples used were soils from a Settlement, a River Flow, and a Sand Mining area in Duri City, Bengkalis Regency. The susceptibility measurement was carried out using a magnetization curve instrument based on an RL integrator circuit with a frequency variation of 1, 10, and 100 Hz. The measurement results show the effect of the given frequency, namely the greater the measurement frequency, the smaller the susceptibility value. The three soil samples measured showed low and positive paramagnetic susceptibility values. The Magnetization Curve Characterization Instrument can be used and works well for the measurement of magnetic susceptibility values.Item ANALISA SUSEPTIBILITAS MATERIAL FEROMAGNETIK PASIR BESI MENGGUNAKAN KURVA MAGNETISASI DAN SOLENOID GANDA(2021-02) Oktavindria, Wiby; Setiadi, Rahmondia NandaThe non-optimal land use due to the lack of micronutrients content in the soil results in less agricultural productions. It is necessary to know whether the plant nutritions in the soil are sufficient or not in order to optimize the crop productions. Iron (Fe) as one of the soil micronutrients is potentially easy to be detected using magnetic principle. This research was conducted by analyzing the magnetization curve of iron whose concentrations in the soil were varied around its need in the soil. The magnetization curve is obtained using an RC integrator circuit and a double solenoid. The results show the amount of iron affects the gradient of the magnetization curve, which represents its susceptibility. The greater the mass of iron being measured, the greater the resulting gradient. The gradient obtained is 0.00038 T·m/A·g. The corner frequency of the suitable RC integrator is 0.0032 Hz. For this corner frequency value, the output signal is quite linear and the voltage change not too small. Measurement of the gradient of iron with frequency variations of 1 Hz and 10 Hz gives different error results. The resulting error at frequency of 1 Hz is 8.29 × 10-7 T·m/A·g, while at a frequency of 10 Hz is 8.94 × 10-6 T·m/A·g. The greater the frequency used in the measurement, the smaller the voltage generated so that the magnetic field value B obtained is also getting smaller, which is decreasing the signal to noise ratio.Item ANALISIS KINERJA PEMBANGKIT LISTRIK TENAGA AIR MENGGUNAKAN TURBIN VORTEX(Elfitra, 2023-11) Marwin, Azwir; Setiadi, Rahmondia NandaIndonesia has 42,210 rivers whose utilization has not been optimized 12,894 MW of water energy potential in 89 power generatim locations, and there are about 2,275 villages out of 74,961 villages in Indonesia that do not have electricity. There are still many areas that do not have electricity. The presence of vortex turbines with small to large scale hydropower can be utilized in remote areas. So the vortex turbine is one of the turbines that meets these criteria, by utilizing the kinetic force of the water vortex to convert it into shaft power. Given this problem, this research is carried out with the aim of getting the better power from a vortex turbine with 5 variations of water discharge and efficiency in each variation. The method used is an experiment using a vortex type water turbine, by investigating the effect of variations in water discharge passing through the vortex turbine prototype. The results show that the highest maximum power is 2.2533 Watts, and the highest vortex turbine rotation is 192 rpm, The highest water discharge is 6.12 cm3/s, and the highest efficiency is 23.4%. Keyword: Vortex turbine, potential, microhydroItem Design of Simple Modified Werner Array Electrodes for Soil Nutrient Sensor of Palm Oil Plantation(2016-02-10) Hamzah, Yanuar; Umar, Lazuardi; Setiadi, Rahmondia NandaPlants need nutrients that can be derived from the soil and from outside in the form of fertilizer. The amount of fertilizer used on certain conditions varies depending on the type of soil, crops and plantations. The composition and quality of the soil varied and plays role in the fertility of crops and required the use of sensors that can measure soil nutrients to determine the specific value of the optimal fertilizer, especially for oil palm plantations to make efficiency of fertilizer and costs savings. In this research, a nutrient sensor works based on the measurement of impedance changes due to the ionic nature of the land affected by dissolved fertilizer in the soil has been designed. The sensor works at a given excitation frequency from 50 kHz up to 10 MHz of 10mV amplitude with three levels of concentration of urea fertilizer, KCL and TSP. The characterization results showed the phase shift and amplitude changes relevant to fertilizer concentrationItem EFEK MAGNETO IMPEDANCE BERFREKUENSI TINGGI DENGAN KONFIGURASI MULTILAYER BERBAHAN VITROVAC 6025Z(Elfitra, 2022-12) Mubarak, Bagja Rahmat; Setiadi, Rahmondia NandaThe study of the high-frequency magneto impedance effect with a multilayer configuration made from vitrovac 6025Z is presented in this paper. The effect of magneto impedance on the vitrovac 6025Z material has been confirmed as dependent on the number of core layers and the frequency (f). Increasing the number of core layers and frequency (f) shows an increase in the performance of the MI sensor system. From variations in the number of cores used 1, 2, and 3 layers as well as frequency variations of 1 MHz and 10 MHz. The highest measured MI ratio is 18.7% in the number of core layers N=3 with a frequency of 10 MHz.Item KARAKTERISASI MATERIAL LOGAM BERDASARKAN SIFAT MAGNETIK MENGGUNAKAN KURVA MAGNETISASI(perpustakaan UR, 2021-07) Candra, Vanessa Audina; Setiadi, Rahmondia NandaTechnological developments in the industrial sector have made very significant progress, one of which is in the material processing industry for metal sorting originating from metal material waste. In this study, a metal type determination system was developed based on the susceptibility value of the magnetization curve. This magnetization curve instrument is a magnetic field measuring instrument that functions to inspect metal materials in a simpler and more practical way. The conventional method uses an electromagnet system to separate metallic materials, however, this method can only detect metals with a susceptibility value. The materials used are aluminum, copper, and iron, which already represent the magnetic properties of metallic materials. This measurement uses a current of -0.5 A to 0.5 A and uses a frequency that is varied by 1, 10, and 100 Hz. The measurement results show that copper material which represents diamagnetic properties with a frequency of 1 Hz produces a susceptibility value of -2.2 x 10-3 (a.u), while for a frequency of 10 Hz it produces a value of -2.1 x 10-3 (a.u). And for a frequency of 100 Hz, the value is -23 x 10-3(a.u). The second material is aluminum which represents paramagnetic properties using a frequency of 1 Hz and then produces a susceptibility value of 2 x 10-3(a.u), then using a frequency of 10 Hz produces a value of 1.3 x 10-3 (a.u) and a frequency of 100 Hz produces a value of 8,6 x 10-3 (a.u) and the third iron material which represents ferromagnetic properties with the same treatment using a frequency of 1 Hz produces a susceptibility value of 4.43 (a.u), for a frequency of 10 Hz produces a value of 4.42 (a.u) and a frequency of 100 Hz produces a value of 4.46 (a.u). The conclusion in this study is that there are differences in the responses of the tools designed to the type of magnetic material being tested where the diamagnetic susceptibility values are small and negative, the paramagnetic susceptibility values are small and positive, and the ferromagnetic susceptibility values are large and positive. In addition, the effect of frequency on the measurement is also obtained where the greater the frequency of the measurement where the greater the frequency used, the susceptibility value will decrease so that the magnetic field B obtained from the measurement is getting smaller.Item PENGARUH JOULE HEATING PADA BAHAN FEROMAGNETIK VITROVAC 6025Z TERHADAP EFEK MAGNETO IMPEDANCE(Elfitra, 2023-11) Yani, Conita Fitri; Setiadi, Rahmondia Nanda"Magneto Impedance, as a promising alternative in detecting magnetic fields, has undergone rapid development in altering the electrical impedance experienced by conductors when exposed to magnetic fields. This research involves the design and implementation of a magneto impedance sensor system utilizing the Joule heating method. The sensitivity of this magneto impedance sensor system reaches approximately picoTesla, generating magnetic fields of around 100 pT. The success of the sensor system's design is evaluated based on its response to magnetic fields approaching the Earth's magnetic field scale, approximately 50 μT. This magneto impedance sensor is crafted using a core made of Vitrovac 6025Z, with a thickness of 0.04 mm and a width of 0.34 mm. The sensor's core experiences 6 varying Joule heating currents, ranging from 0 mA to 540 mA. The sensor system is subjected to testing at frequencies 100 kHz for each current variation. The magneto impedance sensor system generates output in the form of impedance and magnetic fields. The output values will be used to determine the magneto impedance ratio.Item PENGARUH KONSENTRASI FORMALIN PADA TAHU TERHADAP RESPON TEGANGAN KELUARAN PADA SENSOR GAS SEMIKONDUKTOR BERBASIS ELECTRONIC NOSE(Elfitra, 2023-10) Falencia, Ega Hadisty; Setiadi, Rahmondia NandaFormaldehyde is widely used as a food additive to preserve food, one of which is tofu, because tofu has a high-water content which makes tofu rot quickly and taste sour. The use of formaldehyde as a preservative is strictly prohibited in accordance with the Republic of Indonesia Minister of Health Regulation No. 033 of 2012 because formaldehyde is dangerous for body health. One innovative technology that can be used to detect the presence of formaldehyde in tofu in a simple and practical way is system design Electronic Nose (E-Nose). The objective of in this research is tofu soaked with varying formaldehyde concentrations of 0%, 1%, 2%, 3%, 4% and 5% will be detected using a system E-Nose which is designed to use 3 gas sensors made from semiconductors, including the TGS2600, TGS2602, and TGS2611 gas sensors. The gas sensors used will produce a response in the form of an output voltage. From the voltage response produced by each sensor, if the greater the formaldehyde concentration is detected, the resulting voltage response will also increase.Item PENGARUH KONSENTRASI OKSIGEN TERLARUT TERHADAP PENGUKURAN SUSEPTIBILITAS MAGNETIK PADA FREKUENSI RENDAH(Elfitra, 2022-05) Asmarita, Yulmaisi Dwi; Setiadi, Rahmondia NandaWater is one of the most valuable natural resources subsequent to the air. The utilization of water can’t be separated from the quality of the water, where poor water conditions are not only an indicator of environmental damage, but also a threat to the ecosystem. One of indicator water quality is determined by dissolved oxygen. In this research, an instrument to measure the effect of dissolved oxygen was built based on the susceptibility value of a solution at low frequencies of 1 Hz, 10 Hz and 100 Hz. The instrument used consists of 217 turns of the primary coil and 30,000 turns of the secondary coil. A magnetic instrument with an RC circuit is designed to produces a magnetic field, which can inspect sample solutions easily and simply. The RC circuit used resistor and capacitor values of 1 MΩ and 10 μF, respectively, which produces a pole frequency of 0.016 Hz. The gradient value of the measurement solution gets smaller when the frequency is increased, the gradient value at the frequency of 1 Hz is greater than at the frequencies of 10 Hz and 100 Hz. The addition of oxygen to main solution aims to produce solutions with a concentration of 0%, 25%, 50%, 75% and 100%. The measurement results show an effect of solution concentration change on the susceptibility value, the greater the concentration of the solution, the susceptibility value increases. The instrument that is built can also detect changes in the value of the gradient on variations in concentration, frequency and diameterItem PENGARUH TINGKAT KEMATANGAN DAN KEDALAMAN TANAH GAMBUT TERHADAP SIFAT KELISTRIKAN MENGGUNAKAN IMPEDANSI AUTO BALANCE(Elfitra, 2023-05) Sakinah, Sukma; Setiadi, Rahmondia NandaThe use of peatlands in the future will receive a stronger impetus and is likely to become more widespread. Electrical properties can be used as indicators to measure soil conditions. One of the methods developed in agricultural systems to obtain soil condition information is by measuring its electrical and dielectric conductivity properties. The types of peat maturity are divided into sapric peat (ripe peat), hemic peat (half-ripe peat), and fibric peat (unripe peat). Sampling of peat soil in different locations, namely West Labuh Baru Village, Payung Sekaki District (fibric peat), Rimbo Panjang Village, Tambang District (saprik peat), and Kubang Jaya Village, Siak Hulu District (hemic peat). This study aims to determine the electrical and dielectric conductivity of peat maturity and depth at 0 cm-50 cm with variations in moisture content from 0-35% and a frequency of 100 Hz-10 Mhz. The results of this study indicate that the conductivity value will increase when the peat maturity level is lower as the frequency increases. Based on the depth, the conductivity value will be higher as the depth of the peat increases. The dielectric value of peat will increase when the maturity level of the peat is lower and decrease when the frequency is high. Based on the depth, the conductivity value will be higher as the depth of the peat increases. Fibric peat has the highest conductivity and dielectric values.Item PENGUKURAN KUALITAS DAGING SAPI MENTAH DENGAN METODE IMPEDANSI SPEKTROSKOPI(Elfitra, 2022-04) Anika, Hera Julia; Setiadi, Rahmondia NandaBeef is a nutritious food containing high protein and essential amino acids which is one of the most popular food ingredients in the world where the food and agriculture organization predicts the demand for beef will continue to increase until 2050. However, beef is an easy food item damaged because meat is an ideal medium for microbial growth. This research is to evaluate beef quality using the PCI-6221-based impedance spectroscopic method which is run using software LabVIEW. The quality, measures the impedance and pH as well as for testing based on virtual instruments. The measurement process uses a platinum electrode sensor with alternating current, and the frequency used is from 10 Hz to 50 kHz which is set in the software. Thickness of beef is, namely 1 cm, 2 cm and 3 cm. The results of 3 cm showed the impedance value decreased with increasing frequency and increasing storage period from 0 days to 5 days at room temperature due to more permeable cell membranes in the beef. Measurement of pH using the same time and size variation of meat obtain results that increased with increasing storage period due to the activity of microorganisms in meat.Item RANCANG BANGUN PENGATUR ARUS UNTUK TIGA PANJANG GELOMBANG LASER DIODA YANG BERBEDA(2014-03-26) Fitra, Ramma Hayu; Minarni; Setiadi, Rahmondia NandaA compact and low cost of Optical Tweezers usually uses diode lasers. Diode lasers are widely used because of their small size, broad wavelength variations and low cost. Howover, they have some disadvantages such as laser elliptical beam shape and vulnerable to electrical current fluctuations. In this research, a current regulator circuit system was designed and made which composed of a power supply circuit,three current regulators, and a current-limiting circuit. This system was used to regulate the electric currents injected into three laser diodes i.e type HL6312G with wavelegth 635 nm, type L780P01 with wavelegth 780 nm, and type WSLP-785-030m-4-PD with wavelegth 785 nm. From the results, variations of voltage and current versus time were obtained, electric current and power stability of the laser diodes versus time were observed for 60 minutes. Fluctuations obtained for all three circuits regulating electric current was about ± 0.001 mA. Variation of electric current for the laser diode to the three power laser diodes successfully obtained with current and power ranges were 12,2 mA to 76,6 mA and power from 0 mW to 4,55 mW for laser type HL6312G, current range 5,7 mA-40,0 mA and power from 0 mW to12,54 mW for laser type L780P010, current range 17,9 mA-129,9 mA and power from 0 mW to19,24 mW for laser type WSLP-785-030m-4-PD, respectivelyItem RANCANG BANGUN SISTEM MONITORING LARUTAN GLUKOSA NON-INVASIVE MENGGUNAKAN METODE SPEKTROSKOPI INFRAMERAH(Elfitra, 2023-07) Arifin, Nur Aisyah; Setiadi, Rahmondia NandaInfrared spectroscopy is widely used to measure a large amount of solid and liquid samples. Measurement of glucose concentration in solution is useful for examining how glucose concentration in water. It can be measured using infrared spectroscopy and it’s a potential application for non-invasive measurement of blood glucose levels. In this research AS7263 based sensor system was designed and applied as a detector of glucose levels in the human body. The purpose of this study was to determine the response of measuring glucose levels using infrared spectroscopy at various wavelengths and intensity, as well as to determine the effectiveness of measuring glucose level as a function of infrared light intensity. The results showed the sensitivity level of the AS7263 sensor varied with wavelengths and intensities. The results showed that the sensitivity level of the AS7263 sensor was varied with wavelength of 730 nm, 760 nm, 810 nm and 860 nm. Samples that were detected to have high glucose levels were found in samples of 10%, 15%, 20%, 25% and 30%. The higher the wavelength, the lower the intensity value for each solution concentration, and whereas the shorter the wavelength and intensity, the great the intensity value for each glucose solution. The in conclusion AS7263 sensor design can be used and functions well to detect glucose solution levels.Item SISTEM OTOMATISASI LISTRIK RUMAH TANGGA MEMPERGUNAKAN SMART STECKER BERBASIS MIKROKONTROLER ATMEGA32A(2016-02-01) Yeni, Brenda; Umar, Lazuardi; Setiadi, Rahmondia NandaRecently the electrical energy has become a primary need for the community, but their sources have a limited amount so that the excessive electrical energy consumption will result in shortages of electricity. One of ways is a proposal of automation control systems in household electricity with the use of Smart Stecker. The control system is done by connecting a Stecker at electric plugs with a circuit which consist of thyristor, Integrated Circuits and microcontrollers. The entire circuit is set up C-language and the solution is displayed on a Computer using program Microsoft Visual Studio 6.0. This research has produced a tool that its usage can control the current of household appliances such as a bulb by setting the Pulse Width Modulation (PWM) of 25%, 50%, 75% and 100%, so that the result shows the current changes due to the pulse width obtained into the linear regression I = 0.0011 PW+ 0.0007 and the correlation coefficient of 99%. By controlling ON / OFF switch the current household appliances, the circuit achieves the load of 1 Ampere input and produce 220V at output port, but the maximum input load can be given by 8 Amperes. The last function of smart sctecker is to detect the tools ON / OFF switch.