APMP.M.H-S3 Final Report Comparison on Hardness ... - BIPM

Revision: <strong>Final</strong> <strong>Report</strong>
Date: May 25, 2012
Participant
National Institute of
Metrology (Thailand),
NIMT
Table 2 List of CMC declaration
Calibration and Measurement Capability (CMC)
Rockwell scale A Rockwell scale B
0.38 HRA 0.40 HRB
Physikalisch-Technische
Bundesanstalt, PTB
0.30 HRA 0.50 HRB
Standards and Calibration
Laboratory, SCL
- 1.5 HRB
Korea Research Institute
of Standards and Science,
KRISS 0.40 HRA
0.60 HRB for nominal
more than 50 HRB
0.75 HRB for nominal
not more than 50 HRB
National Physical
Laboratory, NPLI
0.30 HRA
0.50 HRB for nominal
more than 60 HRB
0.60 HRB for nominal
not more than 60 HRB
3. Schedule
The comparison started at the pilot lab, NIMT, in May 2010. The original schedule was
to transfer the artifact from NIMT, PTB, NPLI, SCL, and KRISS respectively with 2
weeks for measurement and 2 weeks for transportation process. The actual
measurement schedule was slightly changed from the tentative one due to some
problem in shipping the artifact to India. Thus, NPLI was scheduled to the last
participant for measurement during October 2010 while measurements of the other
participants went according to the original plan.
The table 3 shows the original schedule and actual time of measurement
Table 3 Original schedule and actual time of measurement
Institute/Country Original schedule Actual schedule
National Institute of Metrology
(Thailand)
Physikalisch-Technische
Bundesanstalt (PTB)
Standards and Calibration
Laboratory (SCL)
1-14 May 2010 1-14 May 2010
1-15 June 2010 1-15 June 2010
1-15 August 2010 1-15 August 2010
Page 7 of 77