Interlaboratory comparisons of the calibration results of time meters

Velychko, Oleh; Shevkun, Sergii; Gordiyenko, Tetyana; Mescheriak, Oleh

doi:10.15587/1729-4061.2018.121089

Cited by 7 publications

(10 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Indicators for assessing of consistency were E n and z indexes set and defined in [4,15]. The general algorithm of processing of the received primary data of ILCs given in [34] was used. In case of inconsistent data, RL reported this appropriate CL and analyzed the responses received from this laboratory.…”

Section: The National Interlaboratory Comparisons For Calibration Laboratoriesmentioning

confidence: 99%

See 1 more Smart Citation

The Data Evaluation of Interlaboratory Comparisons for Calibration Laboratories

Velychko¹,

Gordiyenko²

2022

Applied Aspects of Modern Metrology

Self Cite

View full text Add to dashboard Cite

National accreditation agencies in different countries have set quite strict requirements for accreditation of testing and calibration laboratories. Interlaboratory comparisons (ILCs) are a form of experimental verification of laboratory activities to determine technical competence in a particular activity. Successful results of conducting ILCs for the laboratory are a confirmation of competence in carrying out certain types of measurements by a specific specialist on specific equipment. To obtain reliable results of ILC accredited laboratories, it is necessary to improve the methods of processing these results. These methods are based on various data processing algorithms. Therefore, it is necessary to choose the most optimal method of processing the obtained data, which would allow to obtain reliable results. In addition, it is necessary to take into account the peculiarities of the calibration laboratories (CLs) when evaluating the results of ILС. Such features are related to the need to provide calibration of measuring instruments for testing laboratories. The evaluation results for ILCs for CLs are presented. The results for all participants of ILCs were evaluated using the En and z indexes. The obtained results showed that for the such ILCs it is also necessary to evaluate the data using the z index also.

show abstract

Section: The National Interlaboratory Comparisons For Calibration Laboratoriesmentioning

confidence: 99%

“…During of the evaluation of primary data from the participating CLs, the interlaboratory deviation of the measurement results or degree of equivalences (DoE) was calculated based on the ILCs results. The DoE for j-th CLs participant of ILC is calculated using Equation [4,34,38].…”

Section: The Traditional Data Evaluation Of Interlaboratory Comparisonsmentioning

confidence: 99%

The Data Evaluation of Interlaboratory Comparisons for Calibration Laboratories

Velychko¹,

Gordiyenko²

2022

Applied Aspects of Modern Metrology

Self Cite

View full text Add to dashboard Cite

show abstract

“…These procedures involve the use of, in particular AVs-as determined by analysis, the measurement or standard comparison, traceable to a national or an international standard. The general algorithm for data evaluation of ILC is described in [35]. This algorithm allows RL to take into account all the reporting features of ILC.…”

Section: The Data Evaluation Of National Inter-laboratory Comparisonsmentioning

confidence: 99%

“…The laboratory difference D labj for j-th CL participant of ILC is calculated using Equation [14,35,36].…”

Section: The Data Evaluation Of National Inter-laboratory Comparisonsmentioning

confidence: 99%

See 1 more Smart Citation

Metrological Traceability at Different Measurement Levels

Velychko¹,

Gordiyenko²

2019

Standards, Methods and Solutions of Metrology

Self Cite

View full text Add to dashboard Cite

The international agreements are the basis for establishing the global metrological traceability at different measurement levels. The concepts and concept relations around metrological traceability are presented. An important element of providing the metrological traceability is the evaluation of measurement uncertainty. The procedure of linking of key and supplementary comparison results is described. Linking of key and supplementary comparison results of the Regional Metrology Organization for some quantities according to the described procedure was presented. Results for all participants of presented key and supplementary comparisons are satisfactory for chi-square test and E n number. The procedure of linking of key or supplementary comparison and national inter-laboratory comparison results is described. This procedure can be used for practical evaluation of specific interlaboratory comparison results on a national level in different countries by means of laboratory results of the National Metrology Institute and Designated Institute. This procedure can contribute the mutual recognition of measurement and testing results by different countries. Linking of key comparison and inter-laboratory comparison results for some quantities according to the described procedure was presented. Results for all participants of presented key comparison and interlaboratory comparison are satisfactory for chi-square test, E n number, z scores and ζ scores.

show abstract