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Measurement Techniques
Published in: Measurement Techniques 5/2014

01-08-2014

Hygrometry of Oil and Petroleum Products: Ways of Evaluating the Accuracy of Measurements

Authors: A. B. Kopyl’tsova, B. P. Tarasov

Published in: Measurement Techniques | Issue 5/2014

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Abstract

Existing standard measurement techniques in the area of oil hygrometry are analyzed with respect to interferences. Ways of estimating the accuracy of these methods are examined. The need for a new generation of reference materials and for measurement techniques that take the various interferences into account by methods accessible to ordinary technical staff are pointed out.
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Footnotes
1
Various terms are encountered in the literature. mixing, homogenization, dispersion, etc.
 
2
A mixer shaft rotation speed of 3000 rpm and a two-bladed head ensures that the active element of the mixer interacts with the sample at a rate on the order of 100 Hz. A higher rate is achieved in dispersers at 300–1200 Hz. Ultrasound offers some promise, but it involves significant and complicated physical and chemical effects in water-oil emulsions because of varying force fields.
 
Literature
1.
GOST R 54500.3-2011, ISO/IEC Guidance 98-3:2008, Measurement Uncertainty, Part 3, Guidance for the Expression of Measurement Uncertainty.
2.
GOST R 8.563-96, GSI. Methods for Making Measurements.
3.
RMG 61-2003, GSI. Indicators of Accuracy, Trueness, Precision of Methods for Quantitative Chemical Analysis. Estimation Methods.
4.
GOST R ISO 5725-6–2002, Accuracy (trueness and precision) of Measurement Methods and Results, Part 6, Use in Practice of Accuracy Values.
5.
GOST 2477-65, Oil and Petroleum Products. Method for Determining Water Content.
6.
GOST 8.315-97, GSI. Reference Samples of the Composition and Properties of Materials. Basic Assumptions.
7.
GOST 8.532-2002, GSI. Reference Samples of the Composition and Properties of Materials. Interlaboratory Metrological Certification. Content and Order of Work.
8.
A. F. Kolesnikov, A. A. Kolesnikov, and S. N. El’detsova, “Reference samples of oil, petroleum products, and gas condensate in a system for the support of traceability of measurements in the oil and gas and power industries,” Proc. Sci.-Pract. Conf. Inventions, Quality, Safety, Ekaterinburg (2012), pp. 50–53, www. uniim.ru/works.pdf, accessed 02.20.2014.
9.
ASTM D4928-12, Standard Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration.
10.
ASTM D4377-00(2011), Standard Test Method for Water in Crude Oils by Potentiometric Karl Fischer Titration.
11.
Federal Law of the Russian Federation No. 102-FZ of June 26, 2008, On Support of the Uniformity of Measurements.
12.
ASTM D5854-96(2010), Standard Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products.
13.
ASTM D4006-11(2012)e1, Standard Test Method for Water in Crude Oil by Distillation.
14.
ASTM D4007-07, Standard Test Method for Water and Sediment in Crude Oil by the Centrifuge Method (laboratory procedure).
15.
R ISO 3734-2009, Petroleum Products. Determination of Water and Sediment in Residual Fuel Oils by the Centrifuge Method.
16.
GOST R 54284-2010, Crude Oils. Determining Water Content by Karl Fischer Coulometric Titration.
17.
GOST 14203-69, Oil and Petroleum Products. Dielectrometric Method for Determining Moisture Content.
18.
ASTM D95-13e1, Standard Test Method for Water in Petroleum Products and Bituminous Materials by Distillation.
19.
GOST R 51946-2002, Petroleum Products and Bituminous Material. Method for Testing for Water by Distillation.
20.
GOST 21614-81, Liquids and Gases That Do Not Interact with Fischer Reagent. Coulometric Test Method for Water.
21.
B. P. Tarasov, A. B. Kopyl’tsova, and E. N. Glazacheva, “Support for the accuracy of determinations of water content using laboratory and flow-through oil hygrometers: status, problems, achievements,” Izmer. Tekhn., No. 3, 51–55 (2013); Measur. Techn., 56, No. 3, 344–349 (2013).CrossRef
22.
GOST 8.615-2005, GSI. Measuring the Amount of Oil and Petroleum Gas Extracted from Wells. General Metrological and Technical Specifications.
23.
GOST R 54281-2010, Petroleum Products, Lubricating Oil, and Additives. Method of Testing for Water by Karl Fischer Coulometric Titration.
Metadata
Title
Hygrometry of Oil and Petroleum Products: Ways of Evaluating the Accuracy of Measurements
Authors
A. B. Kopyl’tsova
B. P. Tarasov
Publication date
01-08-2014
Publisher
Springer US
Published in
Measurement Techniques / Issue 5/2014
Print ISSN: 0543-1972
Electronic ISSN: 1573-8906
DOI
https://doi.org/10.1007/s11018-014-0499-8

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