AFRIMETS. Supplementary Comparison Programme. Calibration of Gauge Blocks. by Mechanical Comparison Method AFRIMETS.L S3.
|
|
- Dwain Giles Tyler
- 5 years ago
- Views:
Transcription
1 AFRIMETS Secretariat Private Bag X34 Lynnwood Ridge 0040 AFRIMETS Supplementary Comparison Programme Calibration of Gauge Blocks by Mechanical Comparison Method AFRIMETS.L S3 Final Report Giza, Egypt, March 2015 M. Amer, F. Abdel Aziz 1
2 Contents Page No. Abstract Introduction Aim of the Programme Participants Design of the Programme Reporting Measurement equipment used by the participants Stability of the travelling standards Analysis of results Reference Values Results as reported by the Participants Discussion of measurements results Conclusions List of References
3 Abstract: A round robin comparison in calibration of gauge blocks by mechanical comparison method between NMIs of Arab countries in addition to the NMI of South Africa was carried out during the period of November 2011 to July 2013, The Arab Federation for Metrology (AFM) identification number for this comparison is: ARABMET L.S.1. NIS-Egypt acted as the pilot laboratory. One set of gauge blocks, with nominal size: 1 mm, 5 mm, 10 mm, 40 mm, 90 mm were circulated. This comparison was registered in the BIPM KCDB in June 2012 as an AFRIMETS supplementary comparison under the identifier AFRIMETS.L-S3. The results obtained are represented in this report. Coordination of the programme has been done by the AFM technical support unit. 1- Introduction: The Technical Support Unit (TSU) of the Arab Federation for Metrology (AFM) developed a questionnaire to assist the Arab Metrology Programme ARABMET to develop appropriate protocols and schedules for an intended intercomparisons schemes. In May 2011 the TSU distributed the questionnaire among Arab Metrology Institutions. Positive response was received from 5 Arab NMIs requesting the participation in two fields, namely Length and Mass Measurements. The comparison programme proposed for length was of the Round Robin type on Gauge Blocks calibration, up to 100 mm, by mechanical means. It was then decided that the AFM, the observer member of the Intra-Africa Metrology System (AFRIMETS), would extend its invitation to the National Metrology Institutes, NMIs to participate in measurement comparison programmes in the prescribed metrological fields. The comparison programmes were designed, organized and coordinated by AFM TSU under technical support of the National Institute for Standards (NIS) of Egypt being an active member of both the Programme and the Federation at the time. The comparison programme was open for NMIs of the members and non members Arab states of the Federation. The comparisons were to be conducted following appropriate measurement protocols. The objectives of the comparison programmes are to provide the participating laboratories with the means for comparing their measurement results, opportunities for technical capability improvements and recognition of Calibration and Measurements Capabilities (CMCs). AFM, being an observer member of the AFRIMETS, worked through concerned AFRIMETS authorities to submit the comparison programmes for registration as AFRIMETS supplementary comparisons on the BIPM KCDB. Thus, the National Metrology Institute of South Africa (NMISA) has been invited to join the round robin scheme. Five gauge blocks, with nominal size 1 mm, 5 mm, 10 mm, 40 mm and 90 mm are chosen as the artifacts for the comparison. All of them are made of steel according to ISO 3650:1998. The Engineering and Surface Metrology laboratory (ESML) of NIS - Egypt provided the travelling standards and the comparison protocol. The measurements in this comparison were carried out from November 2011 to July
4 The measurements were carried out according to a protocol approved by the concerned Regional Metrology Organization technical authorities, namely AFRIMETS.TCL. 2- Aim of the Programme: The aim of this comparison is to give confidence in the technical capacity of the AFM members and non members as a step towards the publication of CMCs in the BIPM KCDB to gain international Statement of Equivalence in accordance with the mutual recognition arrangement (CIPM MRA). The participation of NIS - Egypt and NMISA South Africa would help in achieving these goals through their active participation in Sub Regional Metrology Organizations (SRMOs) members of AFRIMETS. The comparison gives objective evidence on the technical competence of the participated laboratories, and it assists in identifying opportunities to improve the metrological capacity of the Laboratories. 3- Participants: Table 3.1 shows the participating NMIs, their affiliations and the planned time schedule. Country - Laboratory Abbreviation 1- EGYPT - National Institute of Standards NIS-ESML 2- IRAQ - Central Organisation for Standardisation and Quality Control - COSQC 3- SYRIA - National Standards and Calibration Laboratory - NSCL 4- JORDAN - Jordan National Metrology Institute - JNMI 5- TUNISIA - Central Laboratory for Testing and Analysis- Metrology Center - LCAE-CME 6- SOUTH AFRICA - National Metrology Institute of South Africa - NMISA SOUTH AFRICA - National Metrology Institute of South Africa - NMISA 1- EGYPT - National Institute of Standards NIS-ESML Date Planned November 2011 December 2011 January 2012 February 2012 March 2012 April 2012 May 2012 Metrology region Pilot Lab; AFM Member, AFRIMETS Member (NEWMET), APMP associate member and EURAMET Corresponding Member AFM Member AFM Member and APMP Associate Member AFM Member and APMP Associate Member AFRIMETS Member (MAGMET) Coach Lab. AFRIMETS Member (SADCMET) and APMP Associate Member Pilot Lab; AFM Member, AFRIMETS Member (NEWMET), APMP Associate Member and EURAMET Corresponding Member 4
5 4- Design of the Programme: The program was designed according to the guidelines for CIPM (Comité International des Poids et Mesures) key comparisons. Five travelling gauge blocks of nominal size 1 mm, 5 mm, 10 mm, 40 mm and 90 mm were provided as artifact by NIS-ESML. They are made of steel according to ISO 3650:1998. The travelling standards were circulated between the participants as shown in table 4.1. As pilot laboratory, NIS-ESML of Egypt determined the length deviation of the travelling standards at the beginning and the end of the comparison. The transportation sequence and measurements of the travelling standards has been done as shown in figure 4.1. NIS-ESML of Egypt acted as the pilot laboratory regarding the measurements which were conducted starting in November 2011 at NIS-ESML. Then the artifact moved to Institute number 2 and so on. No significant accident has been reported during the comparison. However, the artifacts stayed for a longer period than planned at NIS-ESML at the end of the round waiting for their measurement standard to be calibrated to ensure traceability to SI units. Serial NMI Country Artefact Received Report Delivered 1 NIS Egypt November March COSQC Iraq 14 December February NSCL Syria 21 January February JNMI Jordan 11 March March LCAE Tunis 6 June December NMISA - South Africa 17 October November NIS Egypt 30 November July 2013 Table 4.1:- Sequence of the measurements 5
6 NSCL - Syria COSQC - Iraq NIS- Egypt JNMI - Jordan NMISA - South Africa LCAE - Tunis Figure (4.1) shows the transportation sequence and measurements of the travelling standards. 5- Reporting: The measurement results were sent to the AFM in a final report. A list of the equipment used as gauge block comparator, environmental conditions, details of measurement procedure and uncertainty analysis were included as well as the reference standard used in order to see the traceability at each laboratory. 6- Measurement Equipment used by Participants: Lab Measurement Device Tip material NIS-ESML Mitutoyo, GBCD-250 COSQC MAHR 826 NSCL JNMI Tsugami - ECHD Mitutoyo, GBCD250 LCAE MAHR 826 Tungsten Carbide Tungsten Carbide Tungsten Carbide Tungsten Carbide Tungsten Carbide Tip diameter Upper tip Lower tip Measuring Force Upper Lower tip tip 40 mm 10 mm 0.8 N 0.3 N 3 mm 3 mm 0.75 N 0.6 N 20 mm N - 40 mm 10 mm 0.8 N 0.3 N 3 mm 3 mm 0.75 N 0.6 N NMISA TESA Tungsten 40 mm 40 mm 0.63 N 0.63 N 6
7 Deviation from nominal length, nm AFRIMETS L.S3 Table 6.1.: Measurement equipment used in comparison 7- Stability of the traveling standards: The pilot laboratory NIS-ESML of Egypt assures the stability of the traveling standards during a period of months before beginning of the laboratory measurements. Statement on the instability has been found, so that, the measured gauge block length values of the traveling standards were stable during this period. The travelling standards were circulated among five participating laboratories without any incident that required any return to the pilot laboratory to re-measure the travelling standards. Figures 7.1 to 7.5 show graphs indicating the stability of gauge blocks Stability of 1 mm gauge block mm gauge block NIS- Nov.2011 NIS - July 2013 Figure 7.1. Stability of 1 mm gauge block 7.2. Stability of 5 mm gauge block 7
8 Deviation from nominal length, nm AFRIMETS L.S3 Figure 7.2. Stability of 5 mm gauge block 7.3. Stability of 10 mm gauge block mm gauge block NIS- Nov.2011 NIS - July Stability of 40 mm gauge block Figure 7.3. Stability of 10 mm gauge block 8
9 Deviation from nominal length, nm AFRIMETS L.S3 Figure 7.4. Stability of 40 mm gauge block 7.5. Stability of 90 mm gauge block mm gauge block NIS- Nov.2011 NIS - July 2013 Figure 7.5. Stability of 90 mm gauge block 9
10 8. Analysis of results: The weighted mean is used as the reference value in the comparison. For each laboratory (i) the normalized weight, wi was calculated by the following formula: w i = c. 1 u 2 (x i ) (1) where u(xi) is the standard uncertainty given by the laboratory i and C is the normalizing factor and is calculated by the following formula: c = where n is the number of the laboratories. The weighted mean (reference value) is: 1 1 n i=1 u 2 (x i ) (2) x w = The uncertainty of the deviation from the weighted mean is: n i=1 w i. x i (3) u(x i x w) = u 2 (x i ) 2 u int (x w) (4) To avoid bias, only the first set of measurements from the pilot laboratory was included in reference value determination and the analysis of the results of each participant can be done by calculating the deviation of the given result from the weighted mean and the uncertainty of this deviation. The statistical consistency of the results with the uncertainties given by the participants can be checked by the E n value for each laboratory. E n = x i x w 2 u 2 2 (x i ) u int (x w) (k = 2) (5) where x i x w is the deviation from the weighted mean for a result of a laboratory, u int is the so called internal standard deviation that is based on the estimated standard uncertainties as reported by the participants: u int (x w) = C (6) E n values for consistent measurement results are expected to be between -1 and 1 for a coverage factor of k = 2. 10
11 The statistical consistency of the comparison can be analyzed by the so called Birge ratio test. The Birge ratio compares the observed spread of the results with the spread expected from the individual reported uncertainties. The Birge ratio is: R B = u ext (x w) u int (x w) (7) where u ext is the so called external standard deviation and can be calculated by the following formula: u ext (x w) = 1 I 1. I (x i x w) 2 i=1 u 2 (x i ) 1 I i=1 u 2 (x i ). (8) where I is the number of the results that are taken in the calculation. For an infinite population size, the Birge ratio has an expectation value of R B = 1, when considering standard uncertainties. For a coverage factor of k = 2, the expectation value is increased and the data in a comparison are consistent provided that R B < 1 + 8/(I 1). (9) For a limited population size, the Birge criterion is given by: R B Crit = 1 + 8/(I 1) (10) If the calculation of a gauge shows inconsistent dataset, the largest consistent subset is determined by elimination, starting with excluding the result having the largest E n value that makes the largest contribution to the overall chi-squared value. The iteration runs until R B < R B crit. For six laboratories, R B is equal to 1.5. The criterion is recalculated if any results are excluded. A Birge ratio much larger than the criterion implies that some data contain systematic offsets or alternately that some uncertainties have been underestimated. A ratio much less than the criterion implies that uncertainties have been overestimated. The results will point to calculations that may need further investigation and possibly reassessment. The reference value will be selected that best reflects the population. For a population with a number of results of E n greater than 1 and the Birge ratio greater than the Birge criterion, the result with the largest E n was removed and the weighted mean, the 11
12 uncertainty of the mean, all E n values, the Birge ratio and Birge criterion were recalculated. This iteration process was repeated until the Birge ratio became less than the Birge criterion and the exclusion process was stopped. When a result x i is excluded from the reference value, it is not correlated to it and its E n value is calculated by: E n = x i x w 2 u 2 2 (x i ) u int (x w) (11) 9 Reference Value: In this comparison, to meet the requirements of the Mutual Recognition Arrangement, the Key Comparison Reference Values (KCRV) has been evaluated according to the method described in section 8. The weighted mean was determined and the deviations from the weighted mean were calculated. The uncertainty of the weighted mean is based on the internal standard deviation of the final measurement results. The stability measurements of the gauge blocks, performed by the pilot laboratory were excluded. The results of the pilot laboratory contribute only once in the calculation of the reference values. Table 9.1 shows the Key Comparison Reference Values and their standard uncertainties. Table 9.1 Key Comparison Reference Values and associated standard uncertainty (k = 1). Nominal Length (mm) Reference value (nm) Reference value uncertainty (nm) 10 Results as reported by the Participants: On receipt of the reports from all participants the coordinator asked the participants to revise their results regarding the units and uncertainties quoted. Among the received answers, the JNMI asked to withdraw the results of 40 mm and 90 mm gauge blocks for technical reasons. This withdrawal of results was made before Draft A was released, i.e. with the results still blind. 12
13 Overview of measurement results as they were reported by the participating laboratories is given in Table Weighted mean and its difference from reported results were calculated, along with corresponding E n values (k = 2), for each gauge block. A statistical consistency check was performed as described in section 8. Results of 90 mm gauge block which belongs to COSQC were excluded from calculation in order to form a consistent subset, and their E n values are given according to: E n = x i x w 2 u 2 2 (x i )+u int (x w) (12) NIS- ESML COSQC NSCL JNMI LCAE NMISA L u c L u c L u c L u c L u c L u c 1 mm mm mm mm NA NA mm NA NA Table Reported measurement results, in nm, k = Results of 1 mm gauge block Table Results as reported by the participants Nominal 1 mm NIS- ESML COSQC NSCL JNMI LCAE NMISA L u c L u c L u c L u c L u c L u c
14 Deviaation from nominal length, nm AFRIMETS L.S mm gauge block standard uncertainty (k = 1) NIS COSQC NSCL JNMI LCAE NMISA Figure Graphical representation of results Table Results calculated from participant s values 1 mm X i - X w E n NIS- ESML u int, nm COSQC u ext, nm 5.08 NSCL R B 0.37 JNMI X w, nm LCAE NMISA Results of 5 mm gauge block Table Results as reported by the participants Nominal 5 mm NIS-ESML COSQC NSCL JNMI LCAE NMISA L u c L u c L u c L u c L u c L u c
15 Deviaation from nominal length, nm AFRIMETS L.S mm gauge block standard uncertainty (k = 1) NIS COSQC NSCL JNMI LCAE NMISA Figure Graphical representation of results Table Results calculated from participant s values 5 mm X i - X w E n NIS- ESML u int, nm COSQC u ext, nm 5.06 NSCL R B 0.35 JNMI X w, nm 66.2 LCAE NMISA Results of 10 mm gauge block Table Results as reported by the participants Nominal 10 mm NIS- ESML COSQC NSCL JNMI LCAE NMISA L u c L u c L u c L u c L u c L u c
16 Deviaation from nominal length, nm AFRIMETS L.S mm gauge block standard uncertainty (k = 1) NIS COSQC NSCL JNMI LCAE NMISA Figure Graphical representation of results Table Results calculated from participant s values 10 mm X i - X w E n NIS- ESML u int, nm COSQC u ext, nm 8.54 NSCL R B 0.55 JNMI X w, nm 42.9 LCAE NMISA Results of 40 mm gauge block Table Results as reported by the participants Nominal 40 mm NIS- ESML COSQC NSCL JNMI LCAE NMISA L u c L u c L u c L u c L u c L u c NA NA
17 Deviaation from nominal length, nm AFRIMETS L.S mm gauge block standard uncertainty (k = 1) NIS COSQC NSCL JNMI LCAE NMISA Figure Graphical representation of results Table Results calculated from participant s values 40 mm X i - X w E n NIS- ESML u int, nm COSQC u ext, nm NSCL R B 0.95 JNMI - - X w, nm LCAE NMISA Results of 90 mm gauge block Table Results as reported by the participants Nominal 90 mm NIS- ESML COSQC NSCL JNMI LCAE NMISA L u c L u c L u c L u c L u c L u c NA NA
18 Deviaation from nominal length, nm AFRIMETS L.S mm gauge block standard uncertainty (k = 1) NIS COSQC NSCL JNMI LCAE NMISA Figure Graphical representation of results for 90 mm gauge block with standard uncertainty (k = 1) Table Results calculated from participants values 90 mm X i - X w E n NIS -ESML u int, nm COSQC u ext, nm NSCL R B 1.33 JNMI - - X w, nm LCAE NMISA Table Results calculated from largest consistent subset 90 mm X i - X w E n NIS - ESML u int, nm COSQC u ext, nm NSCL R B 0.48 JNMI - - X w, nm LCAE NMISA
19 In table , the results calculated from all the participants values. After the statistical consistency check was performed as described in section 8. Results of 90 mm gauge block which belongs to COSQC were excluded from calculation in order to form a consistent subset and the results in table are calculated Discussion of measurement results: Table 11.1 shows the differences of measured values with respect to Key Comparison Reference Values and the expanded (k = 2) uncertainties of these differences, calculated by: U(x i x ref) = 2 u 2 (x i ) u 2 (x ref) (12) where u(xi) is the standard uncertainty of the laboratory result xi and u(xref) is the standard uncertainty of the reference value xref. Table 11.1 Differences of measured values and KCRV s, with expanded uncertainties (k = 2) Gauge block \ Lab NIS ESML COSQC NSCL JNMI LCAE NMISA 1 mm x i -x ref U(x i -x ref ) mm x i -x ref U(x i -x ref ) mm x i -x ref U(x i -x ref ) mm x i -x ref U(x i -x ref ) mm x i -x ref U(x i -x ref ) Figures 11.1 through 11.5 show the graphs of Degrees of Equivalence for the five gauge blocks. 19
20 NIS COSQC NSCL JNMI LCAE NMISA Figure 11.1 Degrees of Equivalence for 1 mm gauge block with expanded uncertainty (k = 2) NIS COSQC NSCL JNMI LCAE NMISA Figure 11.2 Degrees of Equivalence for 5 mm gauge block with expanded uncertainty (k = 2) 20
21 NIS COSQC NSCL JNMI LCAE NMISA Figure 11.3 Degrees of Equivalence for 10 mm gauge block with expanded uncertainty (k = 2) NIS COSQC NSCL JNMI LCAE NMISA Figure 11.4 Degrees of Equivalence for 40 mm gauge block with expanded uncertainty (k = 2) 21
22 NIS COSQC NSCL JNMI LCAE NMISA Figure 11.5 Degrees of Equivalence for 90 mm gauge block with expanded uncertainty (k = 2) 12 Conclusion: Participation of NMISA of South Africa, a non member of Arab Federation for Metrology (AFM), enriched the inter-comparison programme and contributed to its recognition on the international level. Measurements reports provided by participants show a well established scientific discipline in length metrology in the participant laboratories. Data, equipments, procedures followed and traceability listed in the participant s reports show a very good infra- structure for length metrology in the participant laboratories except for NSCL where a single probe comparator was used which does not comply with ISO 3650:1998. The inter-comparison programme assures the ability of the participant laboratories to provide a world class results in length metrology except for COSQC for 90 mm gauge block, also, JNMI does not participate for 40 mm and 90 mm gauge blocks. 13 List of References 1. ISO 3650:1998(E), Geometrical Product Specification (GPS) Length Standards Gauge Blocks, International Organization for Standardization, Geneva, Switzerland. 2. Guide to the Expression of Uncertainty in Measurement (JCGM 100:2008, GUM 1995 with minor corrections) 3. Decker J.E., Brown N. et al., Recent recommendations of Consultative Committee for Length (CCL) regarding strategies for evaluating key comparison data. Metrologia 43 (2006) L51-L EURAMET comparison of gauge blocks by interferometry, EURAMET #1138,EURAMET.L-K1.2,, Zagreb, December 2011, V. Mudronja, M. Katic. 22
23 5. Asia-Pacific Metrology Programme; developing Economies Committee (DEC) Intercomparison on gauge blocks by Mechanical Comparison Method (APMP.L-S3; ) 6. Measurement comparisons in the CIPM MRA; CIPM MRA-D-05 Version International comparison of surface roughness, APMP.L-K8, final report, NMIA 2013, Andrew Baker. 23
Report on APMP Supplementary Comparison High precision roundness measurement APMP.L-S4. Final report
National Institute of Metrology (Thailand) Report on APMP Supplementary Comparison APMP.L-S4 J. Buajarern, National Institute of Metrology (Thailand) (NIMT), Thailand K. Naoi, National Metrology Institute
More informationASIA PACIFIC METROLOGY PROGRAME
APMP.M.M-K6 (SUB) multiples mass key comparison ASIA PACIFIC METROLOGY PROGRAME Final Report of APMP Comparison of Mass standards APMP.M.M-K6 (SUB) multiples mass key comparison Coordinated by: Vietnam
More informationFinal Report on APMP.M.M-K4.1 - Bilateral Comparison of 1 kg Stainless Steel Mass Standards between KRISS and A*STAR
Final Report on APMP.M.M-K4.1 - Bilateral Comparison of 1 kg Stainless Steel Mass Standards between KRISS and A*STAR Jin Wan Chung 1, Shih Mean Lee, Sungjun Lee 1 1 Korea Research Institute of Standards
More informationEUROMET Project 702 EUROMET.M.D-K4
EUROMET TC-M Meeting 2007 Thursday, 01 March 2007 EUROMET Project 702 EUROMET.M.D-K4 Comparison of the calibrations of high resolution hydrometers for liquid density determinations Salvatore Lorefice INRIM,
More informationA guide to expression of uncertainty of measurements QA4EO-QAEO-GEN-DQK-006
A guide to expression of uncertainty of measurements QA4EO-QAEO-GEN-DQK-006 A guide to expression of uncertainty of measurements Author: E-mail: Nigel Fox Nigel.Fox@npl.co.uk Editor: E-mail: Marie-Claire
More informationMetrology Principles for Earth Observation: the NMI view. Emma Woolliams 17 th October 2017
Metrology Principles for Earth Observation: the NMI view Emma Woolliams 17 th October 2017 Interoperability Decadal Stability Radiometric Accuracy Identical worldwide Century-long stability Absolute accuracy
More informationINTERLABORATORY MASS COMPARISON BETWEEN LABORATORIES BELONGING TO SIM SUB-REGIONS COORDINATED BY CENAM (SIM.7.31a & SIM.7.31b)
INTERLABORATORY MASS COMPARISON BETWEEN LABORATORIES BELONGING TO SIM SB-REGIONS COORDINATED BY CENAM (SIM.7.31a & SIM.7.31b) Jorge Nava 1, Luis O. Becerra 1, Tweedsmuir Mitchell, Mairy Sanz, Olman Ramos
More informationTechnical Protocol of the CIPM Key Comparison CCAUV.V-K5
Technical Protocol of the CIPM Key Comparison CCAUV.V-K5 2017-03-06 revised 2018-02-13 (changed schedule) Task and Purpose of the Comparison According to the rules set up by the CIPM MRA the consultative
More informationComparison of V and 10 V DC Voltage References
Comparison of 1.018 V and 10 V DC Voltage References Technical protocol for BIPM.EM-K11.a and.b comparisons 1. Introduction The Mutual Recognition Arrangement among National Metrology Institutes (NMIs)
More informationDocument No: TR 12 Issue No: 1
ESTIMATION OF THE UNCERTAINTY OF MEASUREMENT BY CALIBRATION LABORATORIES AND SPECIFICATION OF CALIBRATION AND MEASUREMENT CAPABILITY ON SCHEDULES OF ACCREDITATION Prepared by: SADCAS Technical Manage Approved
More informationTechnical Protocol of the Bilateral Comparison in Primary Angular Vibration Calibration CCAUV.V-S1
Technical Protocol of the Bilateral Comparison in Primary Angular Vibration Calibration CCAUV.V-S1 Updated at 12-December-2012 Task and Purpose of the Comparison According to the rules set up by the CIPM
More informationR SANAS Page 1 of 7
ESTIMATION OF THE UNCERTAINTY OF MEASUREMENT BY CALIBRATION LABORATORIES AND SPECIFICATION OF CALIBRATION AND MEASUREMENT CAPABILITY ON SCHEDULES OF ACCREDITATION Approved By: Chief Executive Officer:
More informationCentre for Metrology and Accreditation, MIKES
Centre for Metrology and Accreditation, MIKES Publication J4/22 Northern European Comparison: Calibration of gauge blocks by mechanical comparison, final report A. Lassila EUROMET Project no.: 639 Helsinki,
More informationSupplementary Comparison EURAMET.EM-S19 EURAMET Project No. 688
Supplementary Comparison EURAMET.EMS19 EURAMET Project No. 688 Bilateral Comparison of Measurements of Current Transformers (CTs) Between and Final Report Hüseyin Çaycı (, Pilot Laboratory) January 211
More informationReport on Key Comparison COOMET.AUV.A-K5: Pressure calibration of laboratory standard microphones in the frequency range 2 Hz to 10 khz
Report on Key Comparison COOMET.AUV.A-K5: Pressure calibration of laboratory standard microphones in the frequency range to 10 k June 016 Author: Co-author: Danuta Dobrowolska (GUM, pilot) Alexander Kosterov
More informationCCM short note on the dissemination process after the proposed redefinition of the kilogram
CCM short note on the dissemination process after the proposed redefinition of the kilogram Consultative Committee for Mass and Related Quantities 1. Introduction This note proposes how the mise en pratique
More informationANNEXE 8. Technical protocols for the interlaboratory comparisons
ANNEXE 8 Technical protocols for the interlaboratory comparisons TECHNICAL PROTOCOL FOR BILATERAL COMPARISON (Magnitude of the complex charge sensitivity of accelerometers) EURAMET.AUV.V-S1 1. INTRODUCTION
More informationFinal report on CCQM-K36.1 with erratum
Final report on CCQM-K36.1 with erratum 5 October 2010 Ref 1107-03 HDJ Report no. DFM-2008-R07 Summary A follow-up comparison to CCQM-K36 has been carried out November 2007 to February 2008, designated
More informationNational Physical Laboratory Hampton Road Teddington Middlesex United Kingdom TW11 0LW
NPL REPORT ENG 17 Report on EURAMET key comparison of multiples and submultiples of the kilogram (EURAMET.M.M-K2.1) M Perkin NOT RESTRICTED July 2009 National Physical Laboratory Hampton Road Teddington
More informationFinal Report on the EURAMET.PR-K1.a-2009 Comparison of Spectral Irradiance 250 nm nm
NPL REPORT COM 1 NPL REPORT OP 12 Final Report on the EURAMET.PR-K1.a-2009 Comparison of Spectral Irradiance 250 nm - 2500 nm TERESA GOODMAN 1, WILLIAM SERVANTES 1, EMMA WOOLLIAMS 1, PETER SPERFELD 2,
More informationPhysikalisch-Technische Bundesanstalt
Physikalisch-Technische Bundesanstalt COOMET Supplementary Comparison COOMET.L-S18 (COOMET project: 673/UA-a/15) Involute gear measurement standards Final report September 2017 Coordinator: Physikalisch-Technische
More informationGULF ASSOCIATION FOR METROLOGY. Calibration of Gauge Blocks by Mechanical Comparison Method GULFMET.L-S1
GULF ASSOCIATION FOR METROLOGY Calibration of Gauge Blocks by Mechanical Comparison Method GULFMET.L-S1 Instructions and Technical Protocols GULFMET.L-S1: Calibration of Gauge Blocks by Mechanical Comparison
More informationCalibration of gauge blocks by interferometry. Final Report Results
APMP Key comparison L-K1.1: Calibration of gauge blocks by interferometry Page 1 of 17 Asia-Pacific Metrology Programme APMP Key Comparison APMP.L-K1.1 Calibration of gauge blocks by interferometry Final
More informationCOOMET.M.V-S2 (587/RU-a/12) COOMET SUPPLEMENTARY COMPARISON IN THE FIELD OF MEASUREMENTS OF LIQUIDS KINEMATIC VISCOSITY
Final Report COOMET.M.V-S2 (587/RU-a/12) COOMET SUPPLEMENTARY COMPARISON IN THE FIELD OF MEASUREMENTS OF LIQUIDS KINEMATIC VISCOSITY List of authors: a) Coordinator of comparison: Alexey Demyanov, D. I.
More informationCCL-K1 Calibration of gauge blocks by interferometry. Final report
Eidgenössisches Amt für Messwesen Office fédéral de métrologie Ufficio federale di metrologia Swiss Federal Office of Metrology CCL Key Comparison CCL-K1 Calibration of gauge blocks by interferometry Final
More informationINTERNATIONAL KEY COMPARISON OF LIQUID HYDROCARBON FLOW FACILITIES CCM-FF-K2 (Final Report) BIPM Pavillon de Breteuil F Sevres France
INTERNATIONAL KEY COMPARISON OF LIQUID HYDROCARBON FLOW FACILITIES CCM-FF-K2 (Final Report) A Report for BIPM Pavillon de Breteuil F-92312 Sevres France Project No: FFIN56 October 2008 Report No: XXXX/XXX
More informationFinal Report 06 July 2006 Frank Wilkinson, Gan Xu, and Yuanjie Liu
Bilateral Comparison of between NMIA (Australia) and SPRING (Singapore) (KCDB reference No. CCPR-K1.a.1) Final Report 06 July 2006 Frank Wilkinson, Gan Xu, and Yuanjie Liu Contents 1. Introduction..2 2.
More informationAPMP TCTF Working Group on the Mutual Recognition Agreement
Asia Pacific Metrology Programme APMP TCTF Working Group on the Mutual Recognition Agreement Louis Marais, NMIA Michael Wouters, NMIA APMP, Beijing, November 2015 Role of the WG MRA Co-ordinate both inter-
More informationFinal Report EUROMET PROJECT 818 CALIBRATION FACTOR OF THERMISTOR MOUNTS. Jan P.M. de Vreede
Final Report EUROMET PROJECT 818 CALIBRATION FACTOR OF THERMISTOR MOUNTS Jan P.M. de Vreede Department of Electricity, Radiation and Length NMi Van Swinden Laboratorium Thijsseweg 11, 2629 JA Delft, the
More informationSIM Regional Comparison on. The Calibration of Internal and External Diameter Standards SIM.L-K FINAL REPORT July 2012
SIM Regional Comparison on The Calibration of Internal and External Diameter Standards SIM.L-K4.2009 FINAL REPORT July 2012 Theodore Doiron (NIST), J. A. Pires Alves (INMETRO), Bruno R. Gastaldi (INTI),
More informationReport on EURAMET.M.M-S9
FINAL REPORT Report on EURAMET.M.M-S9 Supplementary comparison of 500 microgram, 200 microgram, 100 microgram and 50 microgram weights (EURAMET project number 1310) Stuart DAVIDSON 1, Adriana VALCU 2,
More informationFinal Report - Version B.5
CIPM Key Comparison CCL-K2 Calibration of long gauge blocks Final Report - Version B.5 Andrew Lewis, NPL, Teddington, March 2003 CCL-K2 Version B.5 Page 1 of 40 Contents Contents... 2 1 Introduction...
More informationAPMP Key Comparison of DC Voltage at V and 10 V
Final Report APMP.EM.BIPM-K11.3 APMP Key Comparison of DC Voltage at 1.018 V and 10 V Kyu-Tae Kim* (Korea Research Institute of Standards and Science, KRISS) Michitaka Maruyama (National Metrology Institute
More informationHigh pressure comparisons between seven European National Laboratories
J4/2007 High pressure comparisons between seven European National Laboratories Range 50 MPa to 500 MPa Report on EUROMET Project 881 Markku Rantanen, Sari Semenoja, Måns Ackerholm, Antoine Condereys, Zdenek
More informationINTERNATIONAL COMPARISON OF PLATINUM RESISTANCE THERMOMETERS BETWEEN CHILE AND ECUADOR
INTERNATIONAL COMPARISON OF PLATINUM RESISTANCE THERMOMETERS BETWEEN CHILE AND ECUADOR M. Araya 1, D. Almeida 2 1 National Laboratory of Temperature of Chile, LCPNT, Santiago, Chile 2 Ecuadorian Standardization
More informationAPMP.T-S6 APMP SUPPLEMENTARY COMPARISON OF INDUSTRIAL PLATINUM RESISTANCE THERMOMETER. Final Report. Prepared by
APMP.T-S6 APMP SUPPLEMENTARY COMPARISON OF INDUSTRIAL PLATINUM RESISTANCE THERMOMETER FOR RANGE 50 C TO 400 C Final Report Prepared by Nurulaini Md Ali 1, Hafidzah Othman 1, Mong-Kim Ho 2, Inseok Yang
More informationForce Key Comparison EUROMET.M.F-K2. (50 kn and 100 kn) EURAMET Project No 518. Final Report. 14 July Pilot: NPL, United Kingdom
Force Key Comparison EUROMET.M.F-K2 (50 kn and 100 kn) EURAMET Project No 518 Final Report 14 July 2014 Pilot: NPL, United Kingdom Co-authors: Renato Reis Machado (INMETRO, Brazil), Petr Kašpar (CMI, Czech
More informationEuramet project 1075 Bilateral comparison
Bilateral comparison Between the gas flow standards of the national Metrology Institutes of Bulgaria (BIM-NCM) and The Netherlands (VSL) Copyright VSL B.V. Dutch Metrology Institute Page 2 of 19 VSL Thijsseweg
More informationEURAMET Project no Inter-comparison of a 1000 L proving tank
EURAMET Project no. 1157 Inter-comparison of a 1000 L proving tank Final Report IPQ (Elsa Batista) Coordinator of the comparison VSL (Erik Smits) Pilot and coordinator of the comparison September 2013
More informationEssentials of expressing measurement uncertainty
Essentials of expressing measurement uncertainty This is a brief summary of the method of evaluating and expressing uncertainty in measurement adopted widely by U.S. industry, companies in other countries,
More informationInternational Pyrheliometer Comparison IPC-XII
t h The 12 t h International Pyrheliometer Comparison IPC-XII 29. September 2016, TECO-2016, Madrid Wolfgang Finsterle Physikalisch-Meteorologisches Observatorium Davos World Radiation Center Outline What
More informationComparison of measurement uncertainty budgets for calibration of sound calibrators: Euromet project 576
NPL REPORT CMAM 73 Comparison of measurement uncertainty budgets for calibration of sound calibrators: Euromet project 576 Peter Hanes October 2001 The National Physical Laboratory is operated on behalf
More informationA comparison of primary platinum-iridium kilogram mass standards among eighteen European NMIs
IMEKO 20 th TC3, 3 rd TC16 and 1 st TC22 International Conference Cultivating metrological knowledge 27 th to 30 th November, 2007. Merida, Mexico. A comparison of primary platinum-iridium kilogram mass
More informationH1: Metrological support. Milena Horvat, Polona Vreča, Tea Zuliani, Radojko Jaćimović, Radmila Milačič
H1: Metrological support Milena Horvat, Polona Vreča, Tea Zuliani, Radojko Jaćimović, Radmila Milačič Basic requirement How to ensure appropriate measurements and monitor changes in time and space? Analytical
More informationForce Key Comparison APMP.M.F-K2.a and APMP.M.F-K2.b (50 kn and 100 kn) Final Report 6 August Pilot: KRISS, Republic of Korea Yon-Kyu Park
Force Key Comparison APMP.M.F-K2.a and APMP.M.F-K2.b (50 kn and 100 kn) Final Report 6 August 2018 Pilot: KRISS, Republic of Korea Yon-Kyu Park Muktar Sawi (NMIM) Seif M. Osman (NIS) S.S.K.Titus (NPLI)
More informationHOW TO EXPRESS THE RELIABILITY OF MEASUREMENT RESULTS. The role of metrological traceability and measurement uncertainty-
HOW TO EXPRESS THE RELIABILITY OF MEASUREMENT RESULTS The role of metrological traceability and measurement - H. Imai 1 1 National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial
More informationCCL-K5. CMM 1D: Step Gauge and Ball Bars. Final Report
Physikalisch-Technische Bundesanstalt CIPM Key Comparison CCL-K5 CMM 1D: Step Gauge and Ball Bars Final Report V3.2 Otto Jusko, PTB, Braunschweig, September 2009 CCL-K5_Final_Report_V3.2(corr).doc Page
More informationMetallic materials Brinell hardness test. Part 3: Calibration of reference blocks
INTERNATIONAL STANDARD ISO 6506-3 Third edition 2014-10-01 Metallic materials Brinell hardness test Part 3: Calibration of reference blocks Matériaux métalliques Essai de dureté Brinell Partie 3: Étalonnage
More informationRECENT ILC ACTIVITY IN ROMANIAN MASS MEASUREMENTS
The Fifth International Proficiency Testing Conference Timisoara, Romania () th 8 th September, 0 RECENT ILC ACTIVITY IN ROMANIAN MASS MEASUREMENTS Adriana Vâlcu, Sterică Baicu National Institute of Metrology,
More informationComparison of the air kerma standards for 137 Cs and 60 Co gamma-ray beams between the IAEA and the NIST. Ronaldo Minniti 1 and Ladislav Czap 2
Comparison of the air kerma standards for 137 Cs and 60 Co gamma-ray beams between the IAEA and the NIST Ronaldo Minniti 1 and Ladislav Czap 2 1 National Institute of Standards and Technology (NIST), Gaithersburg,
More informationAjchara Charoensook, Chaiwat Jassadajin. National Institute of Metrology Thailand. Henry Chen, Brian Ricketts and Leigh Johnson
1 Revised Report on APMP.EM-S6 APMP Bilateral Supplementary Comparison of Resistance between the National Institute of Metrology Thailand and the National Measurement Institute, Australia December 2003
More informationHigh pressure comparison among seven European national laboratories
IMEKO 20 th TC3, 3 rd TC16 and 1 st TC22 International Conference Cultivating metrological knowledge 27 th to 30 th November, 2007. Merida, Mexico. High pressure comparison among seven European national
More informationActivity measurements of the radionuclide 153 Sm for the ANSTO, Australia in the ongoing comparison BIPM.RI(II)-K1.Sm-153
Activity measurements of the radionuclide 153 Sm for the ANSTO, Australia in the ongoing comparison BIPM.RI(II)-K1.Sm-153 G. Ratel*, C. Michotte*, M. Reinhard, D. Alexiev, L. Mo *BIPM, ANSTO, Australia
More informationInter-laboratory Comparison of Impedance-Type Hygrometer in the Range from 10 % to 95 % at 5 C to 55 C
DOI 10.1007/s10765-014-1687-0 Inter-laboratory Comparison of Impedance-Type Hygrometer in the Range from 10 % to 95 % at 5 C to 55 C Domen Hudoklin Regina Mnguni Hans Liedberg Igor Pušnik Jovan Bojkovski
More informationAppendix B1. Reports of SMU
Appendix B1 Reports of SMU Euromet Project 600 Comparison of Surface Roughness Standards /13 EUROMET SUPPLEMENTARY COMPARISON SURFACE TEXTURE Project No. 600 Final Report Elaborated by: M. Szmicskova Bratislava,
More informationOIML D 28 DOCUMENT. Edition 2004 (E) ORGANISATION INTERNATIONALE INTERNATIONAL ORGANIZATION. Conventional value of the result of weighing in air
INTERNATIONAL DOCUMENT OIML D 28 Edition 2004 (E) Conventional value of the result of weighing in air Valeur conventionnelle du résultat des pesées dans l'air OIML D 28 Edition 2004 (E) ORGANISATION INTERNATIONALE
More informationEuramet EM-S40. Bilateral Comparison KIM-LIPI / LNE. Final Report
DC resistance 1 mω, 100 Ω and 100 MΩ Bilateral Comparison KIM-LIPI / LNE Final Report Isabelle BLANC Laboratoire national de métrologie et d essais (LNE) 9 avenue Roger Hennequin F-78190 Trappes (France)
More informationWGFF Guidelines for CMC Uncertainty and Calibration Report Uncertainty
WGFF Guidelines for CMC Uncertainty and Calibration Report Uncertainty October 21, 2013 Summary The Working Group for Fluid Flow (WGFF) defines Calibration and Measurement Capability (CMC) uncertainty
More informationEA Guidelines on the Calibration of Temperature Indicators and Simulators by Electrical Simulation and Measurement
Publication Reference EA-10/11 EA Guidelines on the Calibration of Temperature Indicators and Simulators by Electrical PURPOSE This document has been produced by EA as a means of giving advice for calibrating
More informationFirst International Involute Gear Comparison
First International Involute Gear Comparison F. Härtig and K. Kniel Measurement institutions of seven different countries China, Germany, Japan, Thailand, Ukraine, United Kingdom and the U.S. participated
More informationOA03 UNCERTAINTY OF MEASUREMENT IN CHEMICAL TESTING IN ACCORDANCE WITH THE STANDARD SIST EN ISO/IEC Table of contents
UNCERTAINTY OF MEASUREMENT IN CHEMICAL TESTING IN ACCORDANCE WITH THE STANDARD SIST EN ISO/IEC 17025 Table of contents 1 GENERAL... 2 2 THE STANDARD SIST EN ISO/IEC 17025... 2 3 SA'S POLICY IN IMPLEMENTING
More informationGuidelines on the Calibration of Static Torque Measuring Devices
European Association of National Metrology Institutes Guidelines on the Calibration of Static Torque Measuring Devices EURAMET/cg-14/v.01 Previously EA-10/14 July 2007 Calibration Guide EURAMET/cg-14/v.01
More informationCCL Key Comparison CCL-K Calibration of Diameter Standards
CCL Key Comparison CCL-K4.2015 Calibration of Diameter Standards (Final) Gaithersburg, Maryland USA September 2015 CCL-K4 2015 Contents 1 Document control...2 2 Introduction...2 3 Organization...2 3.1
More informationBUREAU INTERNATIONAL DES POIDS ET MESURES
BUREAU INTERNATIONAL DES POIDS ET MESURES Bilateral comparison of 1 Ω and 10 kω standards (ongoing BIPM key comparisons BIPM.EM-K13.a and 13.b) between the SMD (Belgium) and the BIPM October 2017 Final
More informationBureau International des Poids et Mesures
Rapport BIPM-010/07 Bureau International des Poids et Mesures Upgrade of the BIPM Standard Reference Photometers for Ozone and the effect on the ongoing key comparison BIPM.QM-K1 y J. Viallon, P. Moussay,
More informationIntercomparison of Thermal Expansion Measurements. EUROMET Project 275. Final Report
Eidgenössisches Amt für Messwesen Office fédéral de métrologie Ufficio federale di metrologia Swiss Federal Office of Metrology Intercomparison of Thermal Expansion Measurements EUROMET Project 75 Final
More informationFinal Report On COOMET Vickers PTB/VNIIFTRI Key Comparison (COOMET.M.H- K1.b and COOMET.M.H- K1.c)
Version 7 of 01-19-07 Final Report On COOMET Vickers PTB/VNIIFTRI Key Comparison (COOMET.M.H- K1.b and COOMET.M.H- K1.c) E. Aslanyan¹, K. Herrmann² ¹ All Russian Research Institute for Physical -Technical
More informationThe National Unitary Institution "Belarusian State Institute of Metrology" (BelGIM)
ЕВРО-АЗИАТСКОЕ СОТРУДНИЧЕСТВО ГОСУДАРСТВЕННЫХ МЕТРОЛОГИЧЕСКИХ УЧРЕЖДЕНИЙ (KOOMET) EURO-ASIAN COOPERATION OF NATIONAL METROLOGICAL INSTITUTIONS (COOMET) October 2017 The National Unitary Institution "Belarusian
More informationNanometrology and its role in the development of nanotechnology
Nanometrology and its role in the development of nanotechnology Rob Bergmans Nederlands Meetinstituut Van Swinden Laboratorium 1 NMi Van Swinden Laboratorium The Art of Measurement Dutch national metrology
More informationEstablishment of a Traceability Chain in Metrology for Materials
Establishment of a Traceability Chain in Metrology for Materials G. W. Bahng*, Colin Lea** *KRISS, gwbahng@kriss.re.kr, **NPL, cl@npl.co.uk Abstract Materials metrology is becoming an increasingly important
More informationFinal Report. CCEM Comparison of 10 pf Capacitance Standards. Anne-Marie Jeffery Electricity Division NIST May 2000 Revised March 2002
Final Report CCEM Comparison of 10 pf Capacitance Standards Anne-Marie Jeffery Electricity Division NIST May 2000 Revised March 2002 Abstract Comparison of electrical standards must be carried out periodically
More informationRecent Developments in Standards for Measurement Uncertainty and Traceability (An Overview of ISO and US Uncertainty Activities) CMM Seminar
Recent Developments in Standards for Measurement Uncertainty and Traceability (An Overview of ISO and US Uncertainty Activities) Dr. Steven D. Phillips Precision Engineering Division National Institute
More informationModelling and Measurand Identification Required for Defining the Mise en Pratique of the kelvin
Modelling and Measurand Identification Required for Defining the Mise en Pratique of the kelvin Franco Pavese INRIM, Thermodynamic Division, Torino, Italy f.pavese@inrim.it F.Pavese 1 Temperature scales
More informationCalibration of long gauge blocks. Technical protocol (Issue 1)
CIPM Key Comparison: Calibration of Long Gauge Blocks 1 National Physical Laboratory CIPM Key Comparison CCL-K2 Calibration of long gauge blocks Technical protocol (Issue 1) Contents 1. Introduction...
More informationISO INTERNATIONAL STANDARD. Metallic materials Vickers hardness test Part 3: Calibration of reference blocks
INTERNATIONAL STANDARD ISO 6507-3 Third edition 2005-12-15 Metallic materials Vickers hardness test Part 3: Calibration of reference blocks Matériaux métalliques Essai de dureté Vickers Partie 3: Étalonnage
More informationFinal Report on the Torque Key Comparison CCM.T-K2 Measurand Torque: 0 kn m, 10 kn m, 20 kn m Dirk Röske 1), Koji Ogushi 2)
Final Report on the Torque Key Comparison CCM.T-K Measurand Torque: kn m, 1 kn m, kn m Dirk Röske 1), Koji Ogushi ) 1) ) Dirk RÖSKE Physikalisch-Technische Bundesanstalt Department 1. Solid Mechanics orking
More informationINTERNATIONAL STANDARD
INTERNATIONAL STANDARD ISO 80000-5 First edition 2007-05-01 Quantities and units Part 5: Thermodynamics Grandeurs et unités Partie 5: Thermodynamique Reference number ISO 2007 PDF disclaimer This PDF file
More informationSIM AUV.A-K1.prev Microphone Intercomparison
Participants: Report on SIM AUV.A-K1.prev Microphone Intercomparison by Knud Rasmussen, DPLA CENAM, División de Vibraciones y Acústica km 4,5 Carretera a los Cués C.P. 76241 Querétaro, México DPLA, Danish
More informationProvläsningsexemplar / Preview INTERNATIONAL STANDARD ISO Second edition
INTERNATIONAL STANDARD ISO 17123-4 Second edition 2012-06-01 Optics and optical instruments Field procedures for testing geodetic and surveying instruments Part 4: Electro-optical distance meters (EDM
More informationA bilateral comparison of a 1 kg platinum standard
DANSK FUNDAMENTAL METROLOGI DANISH FUNDAMENTAL METROLOGY Report on A bilateral comparison of a 1 kg platinum standard by Lars Nielsen Danish Fundamental Metrology B 307, Matematiktorvet, DK-800 Kgs. Lyngby
More informationUncertainties in Acoustics
Uncertainties in Acoustics Norm Broner Broner Consulting Pty Ltd, Melbourne, Australia ABSTRACT In acoustics, we are often required to demonstrate compliance with a given criterion. The criteria may be
More informationGMA STATISTICS Countries. Achievements of metrology HRD service for Foreign customers in 2018
GMA STATISTICS 018 Achievements of metrology HRD service for Foreign customers in 018 70 people from 1 countries have enjoyed opportunities of studying at KRISS. Group courses Individual courses Graduate
More informationComparison protocol EURAMET project
Comparison protocol EURAMET project Bilateral three-phase AC and energy comparison at frequency 1. Introduction This bilateral comparison was triggered by MIKES need to get support for their planned extension
More information19:00 21:30 Registration and reception at Hotel ETAP Altinel. Welcome
AGENDA FOR 5th VERMI YOUNG RESEARCHERS WORKSHOP ON STANDARDISATION OF S in the frame of IPA Turkey* 1 6 November 2009, TAEK, Ankara, Turkey Sunday, 1 November 2009 19:00 21:30 Registration and reception
More informationTraceable Mass Determination and Uncertainty Calculation
Traceable Mass Determination and Uncertainty Calculation Falko Hilbrunner, Thomas Fehling, Siego Mühlich, Mario Schreiber Sartorius Lab Instruments GmbH Weender Landstrasse 94-108 Goettingen, Germany ABSTRACT
More informationA61-02 CALA Guidance on Traceability Revision 1.2 October 15, 2012
Revision 1.2 October 15, 2012 PAGE II TABLE OF CONTENTS TABLE OF CONTENTS... 1 GUIDANCE...2 1.0 Introduction... 2 2.0 Uncertainty and Traceability... 2 3.0 Need for Traceability... 3 3.1 What does traceability
More informationReference Materials for Trade and Development: Quality and Comparability
Reference Materials for Trade and Development: Quality and Comparability A. Introduction Scientific measurements are a basic input to decisions made in many areas of human activity. In particular, physical
More informationUncertainty of Measurement
Uncertainty of Measurement Contents Uncertainty of Measurement.... 3 Uncertainty of Measurement and Measurement Error.... 4 Measuring Uncertainty.... 5 Coverage factor k...6 Factors Affecting Uncertainty....
More informationSchedule for a proficiency test
Schedule for a proficiency test Once a laboratory haegistered the year s programme the interaction between the laboratory and Eurofins Miljø A/S will be according to the schedule described below. 1 Reminder
More informationTechnical protocol for the CCL-K11 key comparison of optical frequency/wavelength standards.
Technical protocol for the CCL-K11 key comparison of optical frequency/wavelength standards. Pilot laboratory: Node laboratory: (EURAMET, COOMET) Node laboratory: (APMP) Node laboratory: (EURAMET) Node
More information2.1. Accuracy, n- how close the indication of the thermometer is to the true value.
AASHTO Accreditation Policy and Guidance on Thermometer Selection and Records Revised: January 25, 2018 Revision #: 0 1. Objective 1.1. The purpose of this document is to clearly define acceptance criteria
More informationT.V. Vorburger, J.F. Song, T.B. Renegar, and A. Zheng January 23, 2008
NIST SURFACE ROUGHNESS AND STEP HEIGHT CALIBRATIONS: Measurement Conditions and Sources of Uncertainty T.V. Vorburger, J.F. Song, T.B. Renegar, and A. Zheng January 23, 2008 The property of surface roughness
More informationEA-10/14. EA Guidelines on the Calibration of Static Torque Measuring Devices. Publication Reference PURPOSE
Publication Reference EA-10/14 EA Guidelines on the Calibration of Static Torque Measuring Devices PURPOSE This document has been produced by EA to improve harmonisation in determining the calibration
More informationComparison of primary standards for liquid micro flow rates
Comparison of primary standards for liquid micro flow rates EURAMET project 1291 EURAMET Regional Supplementary Comparison EURAMET.M.FF-S7 Pilot VSL, Netherlands Peter Lucas Co-pilots LNE-CETIAT, France
More informationSupplementary comparison SIM.M.FF-S12. Final Report for Volume of Liquids at 20 L
Supplementary comparison SIM.M.FF-S12 Final Report for Volume of Liquids at 20 L Pilot: M. Maldonado (CENAM, Mexico) mmaldona@cenam.mx km 4.5 Carretera a los Cués, El Marqués, Qro 76241, Mexico Participants:
More informationThis document is a preview generated by EVS
TECHNICAL SPECIFICATION SPÉCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN ISO/TS 15530-3 December 2007 ICS 17.040.30 English Version Geometrical product specifications (GPS) - Coordinate measuring machines
More informationInternational Atomic Energy Agency. Department of Nuclear Sciences and Applications. IAEA Environment Laboratories
International Atomic Energy Agency Department of Nuclear Sciences and Applications IAEA Environment Laboratories Vienna International Centre, P.O. Box 100, 1400 Vienna, Austria REFERENCE SHEET CERTIFIED
More informationReport on CCM Pilot Study CCM.R-kg-P1. Comparison of future realizations of the kilogram. Final Report
Report on CCM Pilot Study CCM.R-kg-P1 Comparison of future realizations of the kilogram Final Report 27 June 2017 M. Stock 1, P. Barat 1, F. Beaudoux 2, P. Espel 2, P. Pinot 2, F. Piquemal 2, M. Thomas
More informationAPPENDIX G EVALUATION OF MEASUREMENT UNCERTAINTY
APPENDIX G EVALUATION OF MEASUREMENT UNCERTAINTY Table of Contents 1. SCOPE... 2 2. REFERENCES... 2 3. TERMS AND DEFINITIONS... 2 4. BACKGROUND... 4 5. EVALUATION OF MEASUREMENT UNCERTAINTY POLICY... 5
More informationINTERNATIONAL STANDARD
INTERNATIONAL STANDARD ISO 80000-8 First edition 2007-06-01 Corrected version 2007-08-15 Quantities and units Part 8: Acoustics Grandeurs et unités Partie 8: Acoustique Reference number ISO 80000-8:2007(E)
More information