Traceability of gas flow measurements in complex distribution systems - uncertainty approach vs error approach

• Autorzy: Džemić Zijad , Širok Brane , Drnovšek Janko

Identyfikatory

DOI

10.24425/mms.2019.128358

• Języki publikacji: EN

Abstrakty

EN

The objective of the paper is to analyse traceability issues in real-life gas flow measurements in complex distribution systems. The initial aim is to provide complete and traceable measurement results and calibration certificates of gas-flow meters, which correspond to specific installation conditions. Extensive work has been done to enable a more credible decision on how to deal in particular situations with the measurement uncertainty which is always subject of a flow meter’s calibration as a quantitative parameter value obtained in laboratory, and with the qualitative statement about the error of an outdoor meter. The laboratory simulation of a complex, real-life distributed system has been designed to achieve the initial aim. As an extension of standardized procedures that refer to the laboratory conditions, the proposed methods introduce additional “installation-specific” error sources. These sources could be either corrected (if identified) or considered as an additional “installation-specific” uncertainty contribution otherwise. The analysis and the results of the experimental work will contribute to more precise and accurate measurement results, thus assuring proper measurements with a known/estimated uncertainty for a specific gas flow installation. Also, the analysis will improve the existing normative documents by here presented findings, as well as fair trade in one of the most important and growing energy consumption areas regarding the legal metrology aspects. These facts will enable comparing the entire quantity of gas at the input of a complex distributed system with the cumulative sum of all individual gas meters in a specific installation.

Słowa kluczowe

EN

calibration; energy efficiency; error analyses; measurement uncertainty; traceability

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2019
• Tom: Vol. 26, nr 2
• Strony: 419--429
• Opis fizyczny: Bibliogr. 20 poz., rys., tab., wykr.

Twórcy

autor

Džemić Zijad

• Institute of Metrology of Bosnia and Herzegovina, Augusta Brauna 2, 71000 Sarajevo, Bosnia and Herzegovina

autor

Širok Brane

• University of Ljubljana, Faculty of Mechanical Engineering, Aškerčeva cesta 6, 1000 Ljubljana, Slovenia

autor

Drnovšek Janko

• University of Ljubljana, Faculty of Electrical Engineering, Tržaška cesta 25, 1000 Ljubljana, Slovenia

Bibliografia

• [1] International Organization for Standardization (1994). Collaborative study - Accuracy (trueness and precision, parts 2, 3, ISO 5725:1994).
• [2] The European Parliament and Council Directive 2012/27/EU of 25 October 2012 on energy efficiency, amending Directives 2009/125/EC and 2010/30/EU and repealing Directives 2004/8/EC and 2006/32/EC.
• [3] The European Parliament and Council Directive 2006/32/EC of 5 April 2006 on energy end-use efficiency and energy services and repealing Council Directive 93/76/EEC.
• [4] Music, M., Ahic-Dzokic, M., Dzemic, Z. (2015). A New Approach to detection of vortices using ultrasound. Flow measurement and Instrumentation, 42, 40-46.
• [5] European Standardization Organization (2002, 2006). Gas meters - Turbine gas meters (EN 12261:2002/A1:2006, lDT).
• [6] International Organization for Standardization/ International Electrotechnical Commission Guide (2008). Uncertainty of measurement - Part 3: Guide to the expression of uncertainty in measurement (ISO/IEC Guide 98-3:2008, GUM: 1995).
• [7] European Standardization Organization (2002). Gas meters - Rotary displacement gas meters (EN 12480:2002, IDT)
• [8] Alberta Energy Regulator Directive 017 of 31 March 2016 on the Measurement Requirements for Oil and Gas Operations.
• [9] The European Parliament and Council Directive 2009/73/EC of 13 July 2009 concerning common rules for the internal market in natural gas and repealing Directive 2003/55/EC.
• [10] The European Parliament and Council Directive 2014/32/EC of 26 February 2014 on the harmonization of the laws of the Member States relating to the making available on the market of measuring instruments.
• [11] Dzemic, Z., Sirok, B., Bizjan, B. (2018). Turbine flowmeter response to transitional flow regimes. Flow Measurements and Instrumentation, 59, 18-22.
• [12] International Organization for Standardization (2010). Guidance for the use of repeatability, reproducibility and trueness estimates in measurement uncertainty estimation (ISO 21748:2017).
• [13] International Organization for Standardization (2005). Measurement of fluid flow - Procedures for the evaluation of uncertainties (ISO 5168:2005).
• [14] Beges, G., Drnovsek, J., Pendrill, L.R. (2010). Optimizing calibration and measurement capabilities in terms of economics in conformity assessment. Accreditation and Quality Assurance, 15, 147-154.
• [15] Cox, M.G., (2002). Evaluation of key comparison data. Metrologia, 39, 589-595.
• [16] Cascetta, F., Comazzi, M, Musto, M., Rotondo, G. (2012). An experimental intercomparison of gas meter calibrations. Measurement, 45, 1951-1959.
• [17] EURAMET Project No. 1296, Inter-laboratory calibration comparison of the rotary piston gas meter G650, October 20, 2015.
• [18] Wright, J.D., Ward, D.B., Mattingly, G.E. (1999). Validating uncertainty analyses for gas flow standards via intra and inter laboratory comparisons. Proceedings of the NCSL Conference, Charlotte, NC.
• [19] International Organization for Standardization (2011). Energy management systems - Requirements with guidance for use (ISO 50001:2011).
• [20] International Organization of Legal Metrology (2012). Gas meters. (Part 1, 2, OIML R 137-1-2).

Uwagi

EN

1. The research presented here has been carried out between March 2015 and September 2017 at LABSAGAS at KJKP Sarajevogas d.o.o. (natural gas Distribution Company in Bosnia and Herzegovina) which is an EURAMET Associate: Designated Institute.

PL

2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).