Discussion on the Classification Criteria of Measurement System Level

2021 ◽  
Author(s):  
Yi-Ting Chen ◽  
Keyword(s):  
Measurement System ◽  
Metrological Traceability ◽  
Classification Criteria ◽  
System Level ◽  
Traceability Chain ◽  
Measurement Systems ◽  
Primary Measurement ◽  
Measurement Results ◽  
Definition Of

According to the definition of metrological traceability in ISO/IEC Guide 99:2007(VIM 3)[1], people in the metrology field can know the level of the measurement system in the metrological traceability chain by drawing the metrological traceability diagram on the measurement results. However, if someone want to further determine which level the measurement system belongs to, it should be classified as primary measurement system, secondary measurement system, or even other measurement systems. Because the definitions of terms such as primary measurement system, secondary measurement system and other measurement systems are not included in VIM 3[1], there’s no clear classification basis for the measurement system level. Therefore, this article will discuss the definitions of terms in VIM 3[1] that are more relevant to the classification of measurement system levels, then try to formulate the classification criteria, supplemented by case studies, and hope to serve as a reference for people in the metrology field when reviewing the measurement system and judging its system level.

scholarly journals Real-time monitoring of the rubber belt tension in an industrial conveyor

2022 ◽  
Vol 3 (1) ◽  
pp. 1-10
Author(s):  
Damian Bzinkowski ◽  
◽  
Tomasz Ryba ◽  
Zbigniew Siemiatkowski ◽  
Miroslaw Rucki ◽  
...  
Keyword(s):  
Measurement System ◽  
Uncertainty Estimation ◽  
Strain Gauges ◽  
Expanded Uncertainty ◽  
Belt Conveyor ◽  
Measurement Systems ◽  
Measurement Results ◽  
Rubber Belt ◽  
The Stability ◽  
Experimental Researches

The paper presents a novel system for monitoring of the work of industrial belt conveyor. It is based on the strain gauges placed directly on the roller surface that measure pressing force of the belt on the roller. Automatical operation of the measurement system minimizes impact of an operator on the measurement results. Experimental researches included the stability of indications during 5 days, Type A uncertainty estimation and equipment variation EV calculations. Expanded uncertainty calculated for the level of confidence 95% was below 0.1% of the actually measured value, and percentage repeatability %EV = 9.5% was obtained. It can be considered satisfactory, since usually it is required %EV < 10% for new measurement systems.

scholarly journals Traceability in Laboratory Medicine

2009 ◽  
Vol 55 (6) ◽  
pp. 1067-1075 ◽  
Author(s):  
Hubert W Vesper ◽  
Linda M Thienpont
Keyword(s):  
Metrological Traceability ◽  
Implementation Process ◽  
Laboratory Medicine ◽  
Regulatory Requirement ◽  
Measurement Systems ◽  
Measurement Results ◽  
Control And Prevention ◽  
Improving Patient Care ◽  
Laboratory Standardization ◽  
Traceability Of Measurement Results

Abstract Background: In patient and population samples, generation of analytical results that are comparable and independent of the measurement system, time, and location is essential for the utility of laboratory information supplied in healthcare. Obtaining analytical measurement results with such characteristics is the aim of traceability in laboratory medicine. As awareness of the benefits of having traceable measurement results has increased, associated efforts have been directed toward making traceability a regulatory requirement and developing approaches to enable and facilitate the implementation of traceability. Although traceability has been a main focus of many laboratory standardization activities in the past, discussions are still ongoing with regard to traceability and its implementation. Content: This review provides information about the traceability concept and what needs can be fulfilled and benefits achieved by the availability of traceable measurement results. Special emphasis is given to the new metrological terminology introduced with this concept. The review addresses and describes approaches for technical implementation of traceable methods as well as the associated challenges. Traceability is also discussed in the context of other activities to improve the overall measurement process. Summary: Establishing metrological traceability of measurement results satisfies basic clinical and public health needs, thus improving patient care and disease control and prevention. Large advances have been made to facilitate the implementation of traceability. However, details in the implementation process, such as lack of available commutable reference materials and insufficient resources to develop new reference measurement systems continue to challenge the laboratory medicine community.

scholarly journals The new certified reference material of chlorobenzene as a means of providing the metrological traceability for calibration and measurements

2020 ◽  
Vol 16 (1) ◽  
pp. 43-55
Author(s):  
I. Y. Tkachenko ◽  
A. G. Budko ◽  
A. Y. Mikheeva ◽  
A. I. Krylov
Keyword(s):  
Reference Material ◽  
Molar Fraction ◽  
Metrological Traceability ◽  
Metrological Characteristics ◽  
Isotopic Dilution ◽  
Gas Chromatography Mass Spectrometry ◽  
Measuring Instruments ◽  
Primary Measurement ◽  
Measurement Results ◽  
Primary Measurement Standard

The article is devoted to the development of a reference material of chlorobenzene composition, providing metrological traceability of measurement results to the State primary measurement standard of units of mass (molar) fraction and mass (molar) concentration of organic components in liquid and solid substances and materials based on liquid and gas chromatography-mass spectrometry with isotopic dilution and gravimetry GET 208-2014.The paper considers an indirect method for determining the purity of the starting substance, describes the main stages of development of the reference material, and presents the results of the evaluation of the reference material metrological characteristics, including studies on homogeneity and stability.The reference material of the composition of chlorobenzene has the following metrological characteristics: mass fraction of chlorobenzene (from 993.0 to 999.8 mg/g); molar fraction of chlorobenzene (from 99.30% to 99.98%); the expanded uncertainty of the certified characteristics is 0.02% (at k = 2).The reference material ensures metrological traceability to units of measuring instruments and measurement results, and is intended for verification, and calibration and graduations.

Metrological traceability of measurement results in chemistry: Concepts and implementation (IUPAC Technical Report)

2011 ◽  
Vol 83 (10) ◽  
pp. 1873-1935 ◽  
Author(s):  
Paul De Bièvre ◽  
René Dybkær ◽  
Aleš Fajgelj ◽  
D. Brynn Hibbert
Keyword(s):  
Metrological Traceability ◽  
Institutional Framework ◽  
Interlaboratory Comparisons ◽  
Traceability Chain ◽  
Measurement Result ◽  
Technical Report ◽  
Measurement Results ◽  
Flow Charts ◽  
Traceability Of Measurement Results

This IUPAC study aims at formulating recommendations concerning the metrological traceability of a measurement result in chemistry. It is intended to provide the chemical measurement community with a consistent view of the creation, meaning, and role of metrological traceability and its underpinning concepts. No distinction is made between measurement results obtained in “high metrology” and in the “field”. A description is given of the calibration hierarchies needed in different circumstances to arrive at metrological traceability along a metrological traceability chain. Flow charts of generic calibration hierarchies are presented as well as a variety of examples. The establishment, assessment, and reporting of metrological traceability are discussed, including the provision of metrological references by a metrological institutional framework and the role of interlaboratory comparisons.

Metrological traceability chain for pH measurement results

MAPAN ◽  
2010 ◽  
Vol 25 (3) ◽  
pp. 191-196 ◽  
Author(s):  
Petra Spitzer ◽  
Steffen Seitz
Keyword(s):  
Metrological Traceability ◽  
Ph Measurement ◽  
Traceability Chain ◽  
Measurement Results

Correction of the Popular Bias Test Method Recommended by ISO/TS16949 for Manufacturing Industries

2014 ◽  
Vol 568-570 ◽  
pp. 131-136
Author(s):  
Si Yuan Frank Yang
Keyword(s):  
Conventional Method ◽  
Measurement System ◽  
Test Method ◽  
Manufacturing Industries ◽  
Measurement Bias ◽  
Statistical Bias ◽  
High Quality ◽  
Measurement Systems ◽  
Accuracy Test ◽  
Measurement Results

Measurement systems play important roles in producing consistent, high quality products in manufacturing industries. An important requirement for a measurement system is the consistency or stability of its measurement results. The measurement bias needs to be checked periodically in production to decide whether the measurement system needs to be recalibrated timely to maintain the consistency. A very popular conventional method of statistical bias test recommended by ISO/TS16949 for manufacturing industries has been reviewed. Its flaws and problems are pointed out and illustrated with special examples. A new method of engineering bias test and its equivalent accuracy test have been proposed to correct the problems of the conventional statistical bias test.

Evaluation of LIDAR Track Measurement Systems in Car Body and Truck-Mounted Configurations

2013 ◽  
Author(s):  
Joshua Muñoz ◽  
Mehdi Ahmadian ◽  
Michael Craft
Keyword(s):  
Measurement System ◽  
Lidar System ◽  
Measurement Systems ◽  
Car Body ◽  
System A ◽  
Curvature Measurement ◽  
Measurement Results ◽  
Measured Speed ◽  
Distance Data ◽  
The Individual

This study presents track alignment and curvature measurement results from a Doppler LIDAR (light detection and ranging) speed measurement system, a non-contact speed and distance measurement system comparable to encoders found on research geometry cars. The system has multiple mounting capabilities with the primary implementations being body-mounted and truck-mounted. Track speed is measured using the individual rails as reference targets, producing two speed signals. Curvature data is obtained from the measured speed differential as the train navigates tangent and curved track. The different dynamic behaviors of the truck and car body influence the motion of the LIDAR system, and thus the results vary depending on the mounting configuration. The curvature, speed, and distance data obtained from the LIDAR system has been compared with results from a geometry car and manual track measurements. The results indicate the LIDAR system has strong potential in serving as a highly precise, non-contact speed, distance, and curvature measurement device suitable for implementation in rail geometry applications.

Typology of life quality and statistical measurement

2015 ◽  
Vol 60 (7) ◽  
pp. 1-18
Author(s):  
Tadeusz Borys
Keyword(s):  
Quality Of Life ◽  
Life Quality ◽  
General Concept ◽  
Classification Criteria ◽  
Added Value ◽  
The Core ◽  
Core Content ◽  
Definition Of

The article presents the importance of research on quality of life, the general concept of this category and criteria for the classification of generating important typologies quality of life, the description of which is the core content of the article. The article is development of the ideas and proposals put forward in earlier publications of the author. The added value of this work lies primarily in identifying two tendencies in discussions on the terminology of life quality and derived concepts. An attempt was made to determine the general concept of life quality, taking into account the proposed definition of axiological ground. Also typology classification criteria of quality were grouped for those that are disclosed axiology and those with hidden axiology. The study also presents some problems with measuring the quality of life within particular its classifications.

scholarly journals Real-time monitoring of the rubber belt tension in an industrial conveyor

2022 ◽  
Vol 3 (1) ◽  
pp. 1-10
Author(s):  
Damian Bzinkowski ◽  
◽  
Tomasz Ryba ◽  
Zbigniew Siemiatkowski ◽  
Miroslaw Rucki ◽  
...  
Keyword(s):  
Measurement System ◽  
Uncertainty Estimation ◽  
Strain Gauges ◽  
Expanded Uncertainty ◽  
Belt Conveyor ◽  
Measurement Systems ◽  
Measurement Results ◽  
Rubber Belt ◽  
The Stability ◽  
Experimental Researches

The paper presents a novel system for monitoring of the work of industrial belt conveyor. It is based on the strain gauges placed directly on the roller surface that measure pressing force of the belt on the roller. Automatical operation of the measurement system minimizes impact of an operator on the measurement results. Experimental researches included the stability of indications during 5 days, Type A uncertainty estimation and equipment variation EV calculations. Expanded uncertainty calculated for the level of confidence 95% was below 0.1% of the actually measured value, and percentage repeatability %EV = 9.5% was obtained. It can be considered satisfactory, since usually it is required %EV < 10% for new measurement systems.

Development and Evaluation of Fuzzy Criteria for the Diagnosis of Rheumatoid Arthritis

1996 ◽  
Vol 35 (04/05) ◽  
pp. 334-342 ◽  
Author(s):  
K.-P. Adlassnig ◽  
G. Kolarz ◽  
H. Leitich
Keyword(s):  
Rheumatoid Arthritis ◽  
Reference Model ◽  
American Rheumatism Association ◽  
Uniform Definition ◽  
Sensitivity Rate ◽  
Fuzzy Techniques ◽  
Definition Of ◽  
Different Levels ◽  
Specificity Rate

Abstract:In 1987, the American Rheumatism Association issued a set of criteria for the classification of rheumatoid arthritis (RA) to provide a uniform definition of RA patients. Fuzzy set theory and fuzzy logic were used to transform this set of criteria into a diagnostic tool that offers diagnoses at different levels of confidence: a definite level, which was consistent with the original criteria definition, as well as several possible and superdefinite levels. Two fuzzy models and a reference model which provided results at a definite level only were applied to 292 clinical cases from a hospital for rheumatic diseases. At the definite level, all models yielded a sensitivity rate of 72.6% and a specificity rate of 87.0%. Sensitivity and specificity rates at the possible levels ranged from 73.3% to 85.6% and from 83.6% to 87.0%. At the superdefinite levels, sensitivity rates ranged from 39.0% to 63.7% and specificity rates from 90.4% to 95.2%. Fuzzy techniques were helpful to add flexibility to preexisting diagnostic criteria in order to obtain diagnoses at the desired level of confidence.

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