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INDONESIA
Jurnal Instrumentasi
Published by Badan Standardisasi Nasional
ISSN : 01259202     EISSN : 24601462     DOI : 10.31153
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Chemistry Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology
The scientific areas covered by Instrumentasi are those backboned by scientific measurements and thus range from instrument engineering, metrology, testing, and control. All papers submitted are refereed by bona fide reviewers from leading research institutions as well as universities prior to publication to keep their quality meet the standard of the journal. The review is carried out mainly on the basis of originality, novelty, and contribution to scientific measurement. Authors need to complete the ethical clearance form for publication.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 7 Documents
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Search results for , issue "Vol 42, No 2 (2018)" : 7 Documents clear
Characterization of 1D Grating Standard for National Laboratory Comparison Using Scanning Electron Microscope Asep Ridwan Nugraha; Ardi Rahman; Beni Adi Trisna
Instrumentasi Vol 42, No 2 (2018)
Publisher : LIPI Press, Anggota IKAPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/instrumentasi.v42i2.159

Abstract

Nanometrology, which is dimensional metrology on the nanometer scale, is rapidly gaining importance. In Nanometrology, length standard traceable measurements are required to certify the values obtained from measurements. Standard Reference Material (SRM) is a sample for calibrating the magnification scale of a Scanning Electron Microscope (SEM). The standard are produced by recording a precision, laser-generated, interference pattern using photosensitive materials and other processing steps. This fabrication technique provides an accurate measure of the period of the line-space. Some of the critical quality attributes of a pitch standard are (1) the fundamental pitch distance, (2) the uniformity of the pitch, (3) the quality of the line edge roughness, (4) the imaging contrast that it produces, (5) the accuracy of the certified pitch value, and (6) the traceability of the certified pitch value to an internationally recognized standard. In this paper, we describe characterization of 1D grating standard with nominal 700 nm and 300 nm using SEM and its measurement uncertainty. The measurements were performed at 10 differents measurement position at each nominal. Total number of pitch at all measurement position in each nominal was 180. An image was taken at each measurement position. The average pitch of them represents the pitch value of the specimens. The results shows measured pitch for nominal 700 nm is 700.3 nm and 300 nm is 293.6 nm with measurement uncertainty for nominal 700 nm is 5.5 nm nominal 300 nm is 4.4 nm.
Peer Reviewers Acknowledgement Instrumentasi Instrumentasi
Instrumentasi Vol 42, No 2 (2018)
Publisher : LIPI Press, Anggota IKAPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/instrumentasi.v42i2.190

Abstract

Peer Reviewers Acknowledgement
Data Acquisition System Design of Length Gauge Ocka Hedrony; Bernadus H. S; Adindra Vickar Ega; Ghufron Zaid; Sastra Kusumawijaya
Instrumentasi Vol 42, No 2 (2018)
Publisher : LIPI Press, Anggota IKAPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/instrumentasi.v42i2.161

Abstract

Length gauge is one of measurement standard in the Length Metrology Laboratory, Research Center Metrology – LIPI. Practical use and good accuracy make it a mainstay in calibration. In use, length gauge requires a display unit to display readings of measuring results. The display unit is very susceptible to damage because it is directly connected to an electric power supply. To procure the display unit, requires funds and time. Therefore, the objective of the research is to design a length gauge data acquisition system that is simple and low cost without compromising function. Research was carried out by making a current into a voltage converter, converting an analog voltage signal into a pulse signal, separates the signal when the length gauge moves up and down, counting the generated pulse signal and displays it on the PC. Once the data acquisition system is calibrated, it was found that the readability of the system is 2 μm and with an uncertainty of 2.0 m. With this value of this uncertainty, based on ANSI/NCSL Z540-1-1994, the data acquisition system can be used as standard to calibrate measuring devices with an accuracy of at least 8 m.
DESIGN OF VERY LOW FREQUENCY VIBRATION EXCITER WITH SINGLE DEGREE OF FREEDOM Habibie, Muhammad Haekal; Zaid, Ghufron; Prawito, Prawito
Instrumentasi Vol 42, No 2 (2018)
Publisher : LIPI Press, Anggota IKAPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/instrumentasi.v42i2.155

Abstract

System providers artificial vibration is called vibration exciter, is a system used to provide vibration control that produces certain frequencies. Vibration exciter used for testing, measurement and calibration related to the scope of vibration. Vibration exciter on the market has a high price and requires sufficient technical knowledge. Therefore, the objective of the research is to design vibration exciter that is simple and low cost without compromising function. Research carried out by making the mechanical system of the vibration exciter whose main components consist of a vibration table, linear motion guide, connecting rod, pillars and base. In this research also design electronic systems as the actuator movement of the mechanical system that consists of a microcontroller, DC motors, and motor driver. Range of measuring frequency of the vibration exciter are expected to be realized is 0.1 Hz to 1 Hz. Measurement of frequency process is done using accelerometer sensor, signal conditioning and pulse analyzers to obtain vibration spectrum of the vibration exciter. From this research, the result about the range of the vibrating frequency values is between 43.575 milihertz to 425.99 milihertz. Another result from this research related to the value of the measurement uncertainty of vibration exciter is 2.1% to 4.0% of the nominal value of frequency
Precision RF/MW Measurement Techniques and Standards at NMIJ/AIST A BROADBAND ATTENUATION MEASUREMENT SYSTEM Widarta, Anton
Instrumentasi Vol 42, No 2 (2018)
Publisher : LIPI Press, Anggota IKAPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/instrumentasi.v42i2.162

Abstract

Abstract— An accurate-broadband attenuation measurement system was established at National Metrology Institute of Japan (NMIJ/AIST) to renew the Japan national standard of attenuation. The system works on the principle of intermediate frequency (IF) substitution technique using a calibrated resistive step-attenuator assembly as an IF reference standard. The standard is traceable to the voltage ratio of the inductive voltage divider (IVD) at frequency of 1 kHz. Some unique measurement techniques for achieving highly accurate measurements are presented and discussed in detail. The measurement capability of the system is 0 to 110 dB in the frequency range of 10 MHz to 50 GHz with the expanded uncertainties are from 0.002 dB to 0.068 dB. Keywords— radio frequency; microwave; power; attenuation; impedance; noise; measurement; standard; uncertainty.
PENINGKATAN AKURASI PADA KALIBRASI STOPWATCH/TIMER MENGGUNAKAN SISTEM OTOMASI ROBOT DAN KAMERA Perangin-Angin, Windi Kurnia; Agmal, Swivano; Azzumar, Muhammad; Boynawan, Mohamad; Ratnaningsih, Ratnaningsih; Hapiddin, Asep; Pawestri, Yulita Ika
Instrumentasi Vol 42, No 2 (2018)
Publisher : LIPI Press, Anggota IKAPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/instrumentasi.v42i2.167

Abstract

Kalibrasi stopwatch/timer secara manual bergantung pada respon operator sehingga dapat menyebabkan ketidakakuratan dalam proses kalibrasi. Hal ini disebut sebagai human reaction time. Sekitar 75% dari ketidakpastian pengukuran disumbangkan oleh human reaction time bias dan human reaction time standard deviation. Oleh karena itu dibutuhkan inovasi untuk otomasi sistem kalibrasi stopwatch/timer sehingga menghilangkan faktor human reaction time tersebut. Telah dibangun sistem otomasi kalibrasi stopwatch/time menggunakan alat rakitan berupa lengan robot dan mobil robot mini untuk menekan tombol stopwatch/timer dan standar acuan universal counter. Kamera secara otomastis merekam hasil pengukuran waktu dari universal counter dan stopwatch/timer. Data pengukuran berupa gambar diolah menggunakan teknik image processing untuk menghasilkan angka.Sistem otomasi telah menghilangkan faktor human reaction time dan meningkatkan akurasi pada kalibrasi stopwatch/timer.
INVESTIGATION OF RCM-LIPI SURFACE ROUGHNESS COMPARISON RESULTS ON APMP.L-K8 Ardi Rahman; Nurul Alfiyati; Rima Zuriah Amdani
Instrumentasi Vol 42, No 2 (2018)
Publisher : LIPI Press, Anggota IKAPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/instrumentasi.v42i2.102

Abstract

One way to assure the quality of measurement in calibration laboratories is to conduct inter-laboratory comparison with other laboratories those have a comparable scope. Research Center for Metrology (RCM-LIPI, previously KIM-LIPI) as the Indonesia’s national metrology institute (NMI) has followed and will continuously involve in international comparisons in various fields with other NMIs. In 2010, international comparison of surface roughness APMP.LK-8 was performed, where RCM-LIPI was one of the 10 participating laboratories from different countries those have outliers from a total of 16 participants. Outliers of RCM-LIPI data occurred in three of five artefacts, also noted that six participants did not perform measurements of soft-gauges. This paper discusses the results of the investigation on RCM-LIPI data in APMP.LK-8. There was an error of using of the calibration factor and error in determination of traced profile length. Verification of investigation results was carried out by re-measurement of three artifacts those were used in APMP.LK-8. Analysis of En value of RCM-LIPI against KCRV shows a decrease in outliers from 11 to 1 parameter i.e. Mr1. In addition, the methods of measurement soft-gauges using commercial software is also described.

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