Garuda - Garba Rujukan Digital

Studi instrumen gas analyzer inlet KILN 5W1A50A1 untuk pengukuran kadar oksigen di KILN pada PT. Semen Padang (Study of the KILN 5W1A50A1 inlet gas analyzer instrument for measuring oxygen levels at KILN at PT. Semen Padang ) Nila Yulita; - Asrizal; Zulhendri Kamus
PILLAR OF PHYSICS Vol 11, No 2 (2018)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Oxygen has an important role in the process of burning cement and producing Carbon Monoxide. The oxygen content can be measured using a Gas Analyzer. At PT. Semen Padang has a Gas Analyzer but information about instruments, data and analysis and the use and constraints of the Gas Analyzer are still lacking. To answer this promblem researchers are interested in conducting further research. This research includes descriptive research, namely research that aims to describe or explain an object's variables. measurement results obtained from the measurement results using a Gas Analyzer. the measurement results obtained will be analyzed statistically and graphically. the measurement results are analyzed by data in one day, one week, one month and for 6 months. Based on the results of data analysis it can be seen that the oxygen gas content of the measurement results is still in the range used.

Studi instrumen ceilometer allweather 8339 dan data hasil pengukuran di Stasiun Meteorologi Minangkabau Padang (Study of the allweather 8339 ceilometer instrument and measurement data at the Minangkabau Meteorological Station, Padang ) Serly Samarantika; - Asrizal; Zulhendri Kamus
PILLAR OF PHYSICS Vol 11, No 1 (2018)
Publisher : Department of Physics – Universitas Negeri Padang UNP

The cloud height measurement has important role in aviation field. One of instruments that is used to measure the cloud height is ceilometer. The existence of ceilometer isn’t so common in daily life unlike other weather elements measuring device such as thermometer, barometer and so on. This cause lack of learning source and knowledge over the cloud parameters for students or observers. For this reason, the research about ceilometer instrument is important. The aim of this research is to describe the operation principle of ceilometer and to determine the data results interpretation of the instrument to give support for instrument’s future development. This research can be classified into the descriptive research category. The object of the research is Ceilometer Allweather 8339 in Minangkabau International Airport and its data results during 14 days. The data was analyzed using analysis descriptive technique. This was executed by collecting any kinds of information from field and literatures. Based on the data analysis can be stated two of research results. First, ceilometer works based on Lidar Principle and using NWS ASOS Sky Condition Algorithm as programming algorithm. The transmitter is InGaAs Laser diode and Avalanche Photo Diode is used as receiver. Second, the measurement result data from 1st July 2017 until 14 July 2017 shows variative pattern in height, sky condition and amount of layers every hours. For example the date that consist of the most low clouds is 7th July 2017 and cloud rarely formed on 3rd July 2017

Rancang bangun sistem pengontrolan pH larutan untuk budidaya tanaman hidroponik berbasis internet of things (Solution pH control system fabrication design for the cultivation of hydroponic plants based on the internet of things) Vines Ayudyana; - Asrizal
PILLAR OF PHYSICS Vol 12, No 2 (2019)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Hydroponic plant cultivation is a method of agriculture for saving land. Hydroponic plants have special needs that have to be monitored every day. One of the special needs that is not considered in hydroponic plants is the pH level in the nutrient solution. The pH value needed for each plant is different. The importance of the pH value is controlled because pH is a factor in the ability of plants to absorb nutrients in solution. The solution to this problem is to design a pH control system for hydroponic plants based internet of things. The control system has the aim to stabilize the pH level of nutrients automatically and the measurement can be monitored remotely. This type of research is engineering research. The procedures of engineering research were explaining the ideas that were made, designing the conceptual control system, explaining the arrangement functions, designing in detail, making a prototype, and testing the prototype. Data collection techniques are done directly and indirectly. Direct measurement was related to measuring the output voltage and pH of an acid or base solution. Indirectly measurement related to determining the accuracy and precision of the instrument controlling the pH of the solution. Data analysis technique was used tables and data plots in graphical form. Based on data analysis there are five research results. First, performance specifications consisting of a pH sensor and its converter, automatic valves and electronic circuits namely NodeMCU and relays. Second, the addition of acid solution decreases the pH value and the output voltage. Third, the addition of a base solution increases the pH value and the output voltage. Fourth, the accuracy and presicion in laboratory scale test of the pH control system are in the 99.80% and 99.90% for acid solutions while in the basic solutions 98.26% and 98.34%. Fifth, in the field test results that the control instrument has high accuracy with a pH stability that is 6.016 until 6.982.

Studi instrumen emisi debu tipe durag D-R 290 dalam menentukan karakteristik debu hasil pembakaran klinnker di Indarung V PT. Semen Padang (The study of the D-R 290 durag type dust emission instrument in determining the characteristics of dust from combustion clinics at Indarung V PT. Semen Padang ) Desti Liala Kurnia; - Asrizal; Zulhendri Kamus
PILLAR OF PHYSICS Vol 11, No 2 (2018)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Information about the measurement of dust and processing of measurement data needs to be known. But the reality shows that the information on dust emission instruments and processing data is still lacking. With this basis, research on dust emission instruments and processing of measurement data needs to be done. The research method used in this study is a descriptive research method with a quantitative approach in which the object of research is an instrument of dust emissions. The procedure of this study is in accordance with the steps for descriptive research. The results of this study indicate that the average measurement results of dust emissions with an hourly measurement range still provide measurement results below the specified limit limit. The threshold is based of Environment Regulation LHK No. 19 of 2017 concerning emission quality standards for cement industry businesses and / or activities, namely 75 mg/Nm3. Measurement for 6 months with a weekly measurement range of 25 weeks, obtained an average value of the results of the measurement of dust density of 18.96 mg/Nm. Dust density is directly proportional to the level of translucency, the larger the dust density, the higher the translucency level will also be.

Pengembangan tool pemodelan eksperimen gerak melingkar beraturan dengan pengontrolan laju motor DC berbantukan analisis video tracker (Development of experimental modeling tools for regular circular motion with DC motor speed control assisted by video tracker analysis) Cici Putri; - Asrizal
PILLAR OF PHYSICS Vol 12, No 2 (2019)
Publisher : Department of Physics – Universitas Negeri Padang UNP

The development of technology and information can provide influence on the progress of Science and Technology. Improved science is supported by the role of media and digital technology. Physics is one of the sciences relating to experimental activities. One of interesting is the phenomenon of uniform circular motion. Based on observations were known that the experimental activities use manual tool that have limitations in displaying measurement data. This problem can be solved by modeling tool with video tracker analysis. The purposes of the research were to determine the performance specifications of the uniform circular motion experiment modeling tool, determine the accuracy and precition of controlling the DC motor speed, determine the accuracy and precition of the uniform circular motion modeling tool, determine the parameters of physics and their influences on the experiment of uniform circular motion. This research method was called research and development which is a research method used to validate and develop products. Based the research can describe four results. The first, performance specification consisted of a uniform circular motion modeling tool of 20x20x10 cm by controlling the speed of a DC motor. Second, the accuracy and precition of controlling the DC motor speed with values of 98.85% and 98.54%. Third, the accuracy and precition of the uniform circular motion modeling tool with an accuracy value of 98.67% and precition value of 97.70%. Fourth, the frequency and angular velocity will be greater by using a higher speed value. However, the period value decreases as the speed increases. The influence of physics parameters is done by using variations in speed and radius. Speed is inversely proportional to period. However, speed is directly proportional to frequency and angular velocity. The effect of the radius variation is the centripetal acceleration is directly proportional to the radius

Pembuatan tool modeling eksperimen bidang miring dengan pengontrolan sudut kemiringan otomatis untuk analisis video tracker (Experimental inclined plane modeling tool fabrication with automatic tilt angle control for video tracker analysis) Yolla Octriany; - Asrizal
PILLAR OF PHYSICS Vol 12, No 2 (2019)
Publisher : Department of Physics – Universitas Negeri Padang UNP

One of the experimental science knowledge of physics . Through experimental activities many motion phenomena can be observed, such as the dynamics of motion. One of the dynamics phenomenon of motion that can be done is the motion experiment in the inclined plane. From the observation results, it is known that the motion experiments on the incline were still done manually, namely changing the slope angle and measuring the time on the incline plane experiment still manually to determine the coefficient of kinetic friction, speed, acceleration, and rope tension. The previous set of sloping field experiments had limitations in displaying the results of measurements of physical quantities. One solution to solve the problem was to make modeling tool and analyze it with tracker software . The aims of this research were determine the specification of the performance of experimental modeling tools on the inclined plane, determine the value of kinetic friction coefficient, determine the value of accuracy and accuracy, and determine the effect of changes in tilt angle. This research was a type of engineering research. Engineering research is a design activity that involves things that are relatively new, both in the form of processes or products or prototypes. Data collection was done in two ways, namely through direct and indirect measurement. The direct measurement results of this research were the value of the change in the tilt angle and the indirect measurement results are the values of kinetic friction coefficient, velocity, acceleration, and rope tension in the video software tracker data analysis technique. Based on the results of data analysis four research results can be stated. First, the specification of the performance of the modeling tool on the sloping plane experimental plane with a sliding plane with a length of 50 cm and a width of 10 cm and a base with a length of 40 cm and a width of 10 cm. NEMA 17HS Stepper Motor is used for tilt angle control. Second, the value of the kinetic friction coefficient carried out with the object launch experiment was 0.265. Third, the accuracy value is 93.00% and the accuracy result is 97.00%. Fourth, the greater the tilt angle, the smaller the speed and acceleration values. The value of the rope tension, the greater the angle of inclination, the greater the value of the rope tension.

Pembuatan sistem pengukuran jarak benda digital berbasis sensor Fluxgate (Development of a digital object distance measurement system based on the Fluxgate sensor) Rezy Prima; - Asrizal; - Yulkifli
PILLAR OF PHYSICS Vol 1 (2013)
Publisher : Department of Physics – Universitas Negeri Padang UNP

ABSTRACTMeasurement of the magnetic field is important because many objects have magnet and useful in life. To measure the magnetic field of an object is required a sensor. One type of sensor to detect the magnetic field is fluxgate sensor. Fluxgate magnetic sensor is a sensor that works by changing the magnetic flux around the sensor element. By utilizing the working principle of the fluxgate sensor can be madethe object distance measuring system base on digital fluxgate sensor. The purpose of this research is to determine: static characteristics of sensor fluxgate Z61, performance specifications and design specifications of the digital object distance measuring system based fluxgate sensor. Measurements of magnetic that influenced of distance from the sensor output voltage has been done. The data obtained through measurements was analyzed in two methods, those are statistics and graphs. Base on data and analysis conducted to know the sensitivity and accuracy of the fluxgate sensor Z61. Based on the data and alysisis can be presented three results. First Z61 fluxgate sensor static characteristics include transfer function of V0=0.622x 0.0245x2+3977, sensitivity S=0.049x-0622 and accuracy 0999. The second device length is approximately 30 cm with 20 cm wide with acapacity measurement of 7 millimeters to 15 millimeters by using a magnet as the source of the magnetic field, Z61 type fluxgate sensors, a micrometer screw and microcontroller ATMEGA 8535. Third design specifications of the digital object distance measuring system based fluxgate sensor consists of a percentage error of 12%, precision 0.875 and accuracy 0.831. Keywords: measurements system, magnetic field, fluxgate sensor

Pembuatan tool pemodelan eksperimen gerak parabola dengan pengaturan sudut elevasi untuk analisis video tracker (Experimental modeling tools fabrication for parabolic motion with elevation angle settings for video tracker analysis) Atika Irbah; - Asrizal
PILLAR OF PHYSICS Vol 12, No 2 (2019)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Physics has an important role in the development of Science and Technology. One interesting phenomenon of motion in physics, namely parabolic motion. The importance of the parabolic motion instrument is to understand various types of parabolic motion concepts. From the result of observation, it was known that the parabolic motion experiment was still done manually, namely the measured physical quantities were limited and It can’t display the graph. Experimental tools have weaknesses in parabolic motion experiment activities because they weren’t effective when used. One solution to overcome this weakness is developing a tracker video analysis and modeling tool. The purpose of this research is to determine the performance specifications of a parabolic experiment modeling tool, the design specifications of a parabolic experiment modeling tool, and the effect of the elevation angle change of a parabolic experiment modeling tool. This research can be classified into engineering research method, namely a research method to design a process, product or prototype to make a new contribution. Data collection is done in two ways, namely directly and indirectly measurement. Direct measurement is done by varying the level of the launcher angle in the parabolic motion experiment modeling tool. Indirect measurement is used to determine the accuracy and precision of the parabolic motion experiment modeling tool. Data of the measurement results were analyzed with descriptive statistics in the form of graphs and tables. Based on data analysis, it can be stated that there are three research results. First, the main performance specifications of the parabolic motion experiment modeling tools include: the tool frame size is 14x15x22.5 cm3 and the regulator of elevation angle is done by using the MG995 servo motor. Second, the average accuracy of the experimental results of the modeling tool is 97.38%, while the its average accuracy is 98.59%. Third, the change in elevation angle influences on the time to reach the peak point, maximum height, and time when reaching the maximum distance. The greater the elevation angle causes the value of the time to reach peak point, the maximum height value, and the time to reach the maximum distance also greater. The elevation angle also affects to the maximum distance. From the result of the analysis, it can be confirmed that the maximum distance is obtained when the elevation angle is 45o.

Pengembangan prototipe sistem pengukuran KWH meter digital presisi komunikasi dua arah menggunakan short message service berbasis Mikrokontroler AT89S52 dan Atmega16 (Development of a two-way communication precision digital KWH meter measurement system prototype using a short message service based on the AT89S52 and Atmega16 microcontroller) Yosep Permana; - Asrizal; Zulhendri Kamus
PILLAR OF PHYSICS Vol 1 (2013)
Publisher : Department of Physics – Universitas Negeri Padang UNP

ABSTRACTMeasurement system of electrical energy of PLN customers is done manually can cause errors. These Errors can occur when reading the data of KWH meter and entering the data into customer database system. Based on this fact development of automatic KWH meter with Short Message Service is important. Digital KWH meter can measure electrical energy more precise, turn off electricity automatically and turn on it base on a database. In general, this research intend to design and develop a digital KWH meter with measurement system using the short message service with two direction of communication base on microcontroller AT89S52 and ATMega16. The data obtained through measurement is analyzed in two methods, namely by statistics and graphs. There are four results of this research, those are : 1. KWH meter consists of two parts, namely KWH Meter Digital System and System server for database, 2. Accuracy from rotation disk value, KWH value and cost of customer each are 100%, 99.30% and 100%, Precision from rotation disk value and KWH value each are 1 and 0.99, 3. Time to send data KWH to copy into customer database is 37.65s, 4. Time to turn of and turn on KWH meter each are 11.97s and 19.15s. Keywords : KWH meter, optocoupler sensor, short message service

Pembuatan tool pemodelan eksperimen bandul matematis dengan pengontrolan panjang tali otomatis untuk analisis video tracker (Mathematical pendulum experiment modeling tool fabrication with automatic rope length control for video tracker analysis) - Yani; - Asrizal
PILLAR OF PHYSICS Vol 12, No 2 (2019)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Physics is an interesting science in the world. The reason is that physics is able to explain physical phenomena and phenomena that occur in the world. One of the phenomena in physics is the simple harmonic motion of the mathematical pendulum. Physical phenomena can be observed through experiments using research instruments. The observation results were indicated there that the pendulum mathematical experimental data was only limited to the oscillation time and the number of swings. In addition, the instruments used today have limitations in mathematical pendulum experiments. One solution to solve this problem is to use a mathematical pendulum experimental modeling tool with automatic string length control. This research aims to determine the accuracy and accuracy of string length control, determine the performance specifications of mathematical pendulum modeling tool performance, determine the accuracy and accuracy of mathematical pendulum experiment modeling tools, and determine the effect of string length changes on the mathematical pendulum modeling tool. This research was a type of engineering research which is a non-routine design activity, so that there are new contributions, both in the form of processes and products. Data collection were done in two ways, namely direct and indirect measurement. Direct measurement was done by varying the length of the rope in the mathematical pendulum experiment modeling tool. Indirect measurement to determine the accuracy and accuracy of the mathematical pendulum experiment modeling tool. Data were analyzed with descriptive statistics in the form of tables and graphs. Based on data analysis four research results can be stated. First, the average accuracy of controlling rope length is 99.40% with an average error percentage of 0.59%. The average accuracy is obtained by 99,81% with an average error of 0,70%. Second, the performance of the mathematical pendulum modeling modeling tool is a mathematical pendulum modeling modeling tool measuring 1.0 x 0.7 m with controlling the length of the rope using a stepper motor. Third, the average accuracy of the pendulum mathematical experimental modeling tool is 95.09% with an average error of 4.90%. The average of the pendulum mathematical experimental modeling tool is 98.60% with an average error of 1.40%. Fourth, the longer the rope used the greater the period obtained, it is inversely proportional to the smaller frequency. Meanwhile, the average acceleration of gravity is obtained at 9.95 m/s2 with an average error of 1.50%.

Title

Found 10 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 10 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 10 Documents
Search