scholarly journals ISO-GUM and Supplements are Utilized for QA of BCA Data

10.5772/35017 ◽  
2012 ◽  
Author(s):  
Yasuo Iwaki
Keyword(s):  
Iso Gum

scholarly journals A Multimeasurand ISO GUM Supplement is Urgent

2007 ◽  
Vol 6 ◽  
pp. S676-S689 ◽  
Author(s):  
V. V. Ezhela
Keyword(s):  
Iso Gum

scholarly journals Qualidade de medições e neutralização de efluentes alcalinos com dióxido de carbono

2006 ◽  
Vol 11 (2) ◽  
pp. 169-174
Author(s):  
Eloy Alves Ferreira Filho ◽  
Queenie Siu Hang Chui
Keyword(s):  
Iso Gum

O controle de pH de efluentes industriais, para fins de descarga, é estabelecido por leis estaduais e federais. Devido ao não conhecimento da incerteza de suas medições e principalmente não se conhecendo sua rastreabilidade a padrões nacionais e/ou internacionais, pode ocorrer não conformidade ao se permitir a descarga de efluente ao meio ambiente. Este trabalho enfoca a qualidade das medições de pH, através dos aspectos da rastreabilidade e da incerteza de medição, seguindo os conceitos introduzidos pela ISO GUM. O experimento foi realizado com amostra de efluente alcalino coletado de uma indústria têxtil, envolvendo a reação de neutralização usando o dióxido de carbono. Resultados de pH acompanhados de suas incertezas oferecem informação mais completa na prevenção contra descargas impróprias de efluentes ao meio.

scholarly journals Uji Homogenitas dan Stabilitas Suhu Mini Liquid Bath untuk Kalibrasi Termometer Digital Makanan

2017 ◽  
Vol 2 ◽  
pp. 299
Author(s):  
Liza Indrayani ◽  
Margi Sasono
Keyword(s):  
Liquid Bath ◽  
Iso Gum ◽  
International Standardization Organization ◽  
Uncertainty Measurement ◽  
International Standardization ◽  
Standardization Organization

<p class="AbstrakIndonesia"><strong>Abstrak: </strong>Uji homogenitas dan stabilitas suhu di dalam Mini Liquid Bath untuk kalibrasi termometer digital dalam industri makanan atau Digital Food Thermometer telah dilakukan. Mini Liquid Bath yang akan diuji memiliki bentuk tabung silinder dengan diameter 6.5 cm dan tinggi 13.5 cm. Uji homogenitas suhu dilakukan pada gradien radial dan axial pada silinder bath dengan menggunakan 6 buah sensor termokopel dari sebuah termometer multi channel. Sementara itu, uji stabilitas suhu menggunakan sebuah termometer yang diletakkan pada titik tengah geometris di dalam bath selama beberapa waktu. Selanjutnya, hasil uji ini digunakan untuk menentukan nilai sumbangan ketidakpastian dalam proses kalibrasi termometer digital dengan cara-cara ISO-GUM (International Standardization Organization-Guide Uncertainty Measurement). Berdasarkan hasil penelitian, kondisi stabil pada Mini Liquid Bath diperoleh yaitu pada titik suhu rendah berkisar  dengan ketidakpastian dan suhu tinggi berkisar  dengan ketidakpastian  Hasil uji homogenitas, pada suhu rendah diperoleh ketidakpastian sebesar  dan suhu tinggi diperoleh ketidakpastian . Hasil kalibrasi termometer digital dengan menggunakan Mini Liquid Bath tersebut diperoleh koreksi  untuk suhu rendah dengan ketidakpastian sebesar . Sementara itu, untuk suhu tinggi diperoleh koreksi  dengan ketidakpastian sebesar . Hasil kalibrasi ini dilaporkan dengan tingkat kepercayaan  dan faktor cakupan . Dari hasil tersebut, menunjukkan bahwa pada kalibrasi titik suhu rendah, ketidakpastian pengukuran sangat besar. Hal ini diduga akibat kontribusi signifikan ketidakpastian homogenitas dan stabilitas suhu pada titik suhu rendah.<strong></strong></p>

scholarly journals STUDI ANALISIS KETIDAKPASTIAN HASIL KALIBRASI TIMBANGAN DAN MISTAR TERHADAP KEBERTERIMAAN PENGUJIAN GRAMATUR KERTAS (STUDY ON ANALYSIS OF UNCERTAINTY OF CALIBRATED VALUE FOR BALANCE AND RULER FOR THE ACCEPTANCE OF PAPER GRAMMAGE TESTING)

2016 ◽  
Vol 6 (02) ◽  
Author(s):  
Darmawan Darmawan ◽  
Titik Istirohah
Keyword(s):  
Evaluation Method ◽  
Testing Instrument ◽  
Calibration Laboratory ◽  
Iso 17025 ◽  
Uncertainty In Measurement ◽  
Iso Gum ◽  
Uncertainty Calculation ◽  
Value Measurement ◽  
Measurement Uncertainty Evaluation ◽  
Expression Of Uncertainty

Study on analysis of uncertainty of calibrated value for balance and steel ruler for the acceptance of paper grammage testing that refers to SNI ISO 536 : 2010 (grammage testing method) and SNI 14-0440-2006 (paper and carton grammage) has been done. Testing instrument must be calibrated to ensure the testing value/measurement appropriate with expected specification refers to ISO 17025 : 2008. From calibration value gained conventional truth value and uncertainty of testing instrument. Uncertainty calculation refers to “Guide to the Expression of Uncertainty in Measurement”- ISO GUM, is a reference and measurement uncertainty evaluation method that have been received internationally. This reference is also one of reference documents in ISO 17025 : 2008 (competence requirements of examination and calibration laboratory). The evaluation test showed that the deviation value is less than 4%, so that it complies with the allowed tolerance which is also 4%. The result of testing evaluation and calibration showed that balance and ruler were used in Paper Testing Laboratory of Center for Pulp and Paper was appropriate with grammage testing prerequirement. ABSTRAKStudi analisis ketidakpastian hasil kalibrasi timbangan dan mistar baja terhadap keberterimaan uji gramatur kertas yang mengacu pada SNI ISO 536 Cara uji gramatur dan SNI 14-0440-2006 Gramatur kertas dan karton telah dilakukan. Untuk menjamin hasil uji/ pengukuran sesuai dengan spesifikasi yang diinginkan menurut ISO 17025 Syarat-syarat kompetensi Laboratorium Pengujian dan Laboratorium Kalibrasi maka alat uji/ukur harus dikalibrasi. Dari hasil kalibrasi diperoleh nilai kebenaran konvensional alat ukur beserta ketidakpastiannya. Perhitungan ketidakpastian mengacu pada ISO GUM “Guide to the Expression of Uncertainty in Measurement”, yang merupakan panduan dan metode evaluasi ketidakpastian pengukuran yang diterima secara internasional. Acuan ini juga sebagai salah satu dokumen acuan dalam ISO 17025 . Dari hasil evaluasi hasil uji diperoleh penyimpangan kurang dari 4%, sehingga memenuhi toleransi yang diizinkan yaitu 4 %. Kesimpulan dari studi ini menjelaskan bahwa timbangan dan mistar baja yang digunakan oleh Laboratorium Uji Kertas Balai Besar Pulp dan Kertas memenuhi syarat uji gramatur. Kata kunci: kalibrasi, ketidakpastian, gramatur, akurasi, toleransiKata kunci: kalibrasi, ketidakpastian, gramatur, akurasi, toleransi

scholarly journals An approach to combining results from multiple methods motivated by the ISO GUM

2000 ◽  
Vol 105 (4) ◽  
pp. 571 ◽  
Author(s):  
M.S. Levenson ◽  
D.L. Banks ◽  
K.R. Eberhardt ◽  
L.M. Gill ◽  
W.F. Guthrie ◽  
...  
Keyword(s):  
Multiple Methods ◽  
Iso Gum

Comparison of ISO-GUM, draft GUM Supplement 1 and Bayesian statistics using simple linear calibration

Metrologia ◽  
2006 ◽  
Vol 43 (4) ◽  
pp. S167-S177 ◽  
Author(s):  
Raghu Kacker ◽  
Blaza Toman ◽  
Ding Huang
Keyword(s):  
Bayesian Statistics ◽  
Linear Calibration ◽  
Iso Gum

scholarly journals A Practical Way to ISO/GUM Measurement Uncertainty for Analytical Assays Including In-House Validation Data

2018 ◽  
Author(s):  
Antonio Gustavo González ◽  
María Ángeles Herrador ◽  
Agustín García Asuero ◽  
Julia Martín
Keyword(s):  
Measurement Uncertainty ◽  
Validation Data ◽  
Iso Gum

scholarly journals Incerteza na medição da largura de cordões de solda

2009 ◽  
Vol 14 (3) ◽  
pp. 263-269 ◽  
Author(s):  
Rosenda Valdés Arencibia ◽  
José Ribamar dos Santos Ribeiro
Keyword(s):  
Iso Gum

O presente trabalho aborda a estimativa da incerteza associada à medição da largura do cordão de solda conforme recomendado pelo ISO GUM. A metodologia aplicada consistiu das seguintes etapas: identificação e estudo das variáveis que afetam a medição da largura do cordão, com paquímetro; adoção de um modelo matemático que relaciona as variáveis de entrada e de saída do sistema avaliado; planejamento e execução dos experimentos para o levantamento dos dados; estimativa da incerteza de medição e, finalmente, análise e discussão dos resultados. No final do trabalho foi possível concluir que a variabilidade associada às leituras, foi a fonte de maior contribuição para a incerteza final, e que a incerteza expandida atingiu o valor ± 1,03 mm para 95,45 % de abrangência.

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