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All Journal Jurnal Otomasi Kontrol dan Instrumentasi Bilangan: Jurnal Ilmiah Matematika, Kebumian dan Angkasa Momentum Matrix: International Journal of Communication, Tourism, and Social Economic Trends International Journal of Mechanical, Electrical and Civil Engineering
Yudi Nugraha
Unknown Affiliation
Astronomy Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Mathematics Social Sciences

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Sistem Telemetri Pemantau Gempa Menggunakan Jaringan GSM Ismail Rizka Pambudi; Yudi Nugraha; Mitra Djamal
Jurnal Otomasi Kontrol dan Instrumentasi Vol 4 No 1 (2012): Jurnal Otomasi Kontrol dan Instrumentasi
Publisher : Pusat Teknologi Instrumentasi dan Otomasi (PTIO) - Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/joki.2012.4.1.6

Abstract

Seiringdenganperkembanganzaman,informasiyangcepatdanakuratsangatdiperlukandalammenunjangkinerjadiberbagaibidang.Salahsatunyaadalahinformasimengenaigempa,informasiiniperludisampaikandengancepatdanakuratsehinggadapatmengurangikerugianhartamaupunkorbanjiwa.Namunlokasigeografisdaristasiunpengamatyangbiasanyaadadipedalamanmenjadikurangmenguntungkan,kondisiinimengurangikelancaranpenyebaraninformasimengenaigempa.Salahsatusolusiuntukmenanggulangimasalahketerlambataninformasiiniadalahdenganmemanfaatkantelemetrinirkabel.Telemetrimerupakanserangkaianprosesmulaidaripengukurandilapangan,pengirimandatamelaluimediumtransmisitertentu,kemudianditerimaolehstasiunpengolahdata.Telemetriseringdigunakanuntukmemantaukondisididaerah-daerahyangsulitdijangkauataumembahayakanmanusia. Sistem telemetri ini memiliki beberapa keunggulan, yaitu biaya pembangunan yang relatif murah, sistem monitoring melalui web, dan menggunakan jaringan GSM sehingga jaungkauannya sangat luas.Kata Kunci:Gempa, GSM, GPRS, Nirkabel
Analysis Influence Power Pull Tour Culinary Streetfood in Bandung City Yudi Nugraha; Shierla Setyani
Momentum Matrix: International Journal of Communication, Tourism, and Social Economic Trends Vol. 1 No. 3 (2024): August : Momentum Matrix: International Journal of Communication, Tourism, and
Publisher : Asosiasi Penelitian dan Pengajar Ilmu Sosial Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62951/momat.v1i3.17

Abstract

The city of Bandung is developing into a business center that has advantages in several fields, especially in the field of culinary tourism, which is part of the local identity and is growing rapidly. The purpose of this research is to see the potential of street food in Lengkong to increase the interest of culinary tourism in the city of Bandung. This research method is quantitative and phenomenological through field studies and using the internet as one of the means we use to get information about street food places in Lengkong as our analysis material. This study found that Lengkong street food culinary products can improve the economy of Bandung city traders quickly, because many food vloggers review various types of food in Lengkong so that many domestic and foreign tourists are curious about one of the street foods in the city of Bandung. Social media also plays an important role as a development or form of promotion to increase more tourists and advance local SMEs within the scope of the Lengkong area and develop interest in culinary tourism in the city of Bandung.
Meningkatkan Hasil Belajar Siswa pada Mata Pelajaran Fisika Melalui Penerapan Model Pembelajaran Problem Based Learning (PBL) SMAN 1 Cikalongwetan Yudi Nugraha; Supardi Supardi
Bilangan : Jurnal Ilmiah Matematika, Kebumian dan Angkasa Vol. 3 No. 3 (2025): Juni: Bilangan : Jurnal Ilmiah Matematika, Kebumian dan Angkasa
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/bilangan.v3i3.559

Abstract

This study was motivated by the low learning outcomes of students in Physics subjects in class XII MIPA 7 at SMAN 1 Cikalongwetan, where most students had not reached the minimum mastery criteria. The purpose of this research was to improve student learning outcomes through the implementation of the Problem-Based Learning (PBL) model. The study employed a Classroom Action Research (CAR) method conducted in two cycles, each consisting of two meetings. Each cycle included planning, action, observation, and reflection stages. Data were collected through observations and written tests. The results showed an improvement in student learning outcomes after the implementation of the PBL model, as indicated by the increased number of students achieving scores above the minimum standard and a higher percentage of overall mastery. These findings suggest that the Problem-Based Learning model can be an effective solution to enhance student achievement in Physics. The implication of this study emphasizes the importance of the teacher’s role in designing student-centered learning and facilitating critical thinking and problem-solving skills.
Differential Pressure Flow Transmitter Type Azbil JTD920S Performance Analysis in Desalination Process at PT Indonesia Power UBP Cilegon Muhamad Aldi Firdaus; Diyajeng Luluk Karlina; Yudi Nugraha
International Journal of Mechanical, Electrical and Civil Engineering Vol. 2 No. 4 (2025): October: International Journal of Mechanical, Electrical and Civil Engineering.
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/ijmecie.v2i4.358

Abstract

The Gas and Steam Power Plant (PLTGU) utilizes exhaust heat from gas turbines to produce steam, which is then used to drive steam turbines. One of the critical processes in this system is seawater desalination, which requires reliable measuring instruments to ensure the continuity and quality of the water supply. The Differential Pressure Flow Transmitter type Azbil JTD920S is used to measure fluid flow rates at four main points: Sea Water Flow (feed), Distillate Water Flow, Condensate Water Flow, and Sea Water to Ejector Condenser Flow. A decline in transmitter performance may occur due to environmental factors, corrosion, and high workload, making periodic preventive maintenance (PM) essential. This study aims to analyze the transmitter’s performance by comparing PM data with the manufacturer’s maximum specifications using literature studies, direct observation, and interviews. The calculation results show that the highest performance levels are found in the Distillate Water Flow (73.53%) and Sea Water to Ejector Condenser Flow (73.87%) lines, while the lowest is in the Condensate Water Flow (49.00%). These findings emphasize the importance of close monitoring of high-performance transmitters to prevent premature failure and maintain the efficiency of the desalination process.
Evaluation of Level Transmitter Performance Through Calibration Data in the Instrument Maintenance Unit of PLTGU Cilego Muhammad Rizki; Diyajeng Luluk Karlina; Yudi Nugraha
International Journal of Mechanical, Electrical and Civil Engineering Vol. 2 No. 4 (2025): October: International Journal of Mechanical, Electrical and Civil Engineering.
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/ijmecie.v2i4.363

Abstract

This study evaluates the consistency of transmitter level performance through calibration data obtained from the Instrumentation Maintenance Unit of the Cilegon PLTGU. The purpose of this study is to determine the accuracy, linearity, and stability of transmitter output against standard reference values. Qualitative methods were used, including direct observation, interviews, and literature studies to support the analysis of calibration procedures. Calibration data from the Masoneilan 12420-51 and Yokogawa EJA210E transmitters were analyzed using a comparative approach between normal and abnormal calibration results. Classification was based on the difference between the actual output and the 4–20 mA standard signal, with a tolerance limit of ±0.25% in accordance with ISA and IEC calibration standards. The results of the study show that the Level-3 Deaerator Storage Tank transmitter operates within the normal range, with excellent linearity and accuracy, while the Flash ST Tank Level transmitter shows minor deviations outside the tolerance limit, categorized as abnormal. These deviations suggest the potential for drift or zero shift influenced by environmental factors and aging. This study concludes that periodic calibration is necessary to maintain tranmitter performance reliability and ensure accurate signal transmission in the automatic control system at the Cilegon PLTGU facility.
Co-Authors Diyajeng Luluk Karlina Ismail Rizka Pambudi Mitra Djamal Muhamad Aldi Firdaus Muhammad Rizki Shierla Setyani Supardi Supardi