Demonstrating Competency and Equivalency of Two Commercial SPRT Calibration Facilities

Document(s): 

Demonstrating Competency and Equivalency of Two Commercial SPRT Calibration Facilities (365.33 KB)

The Hart Scientific Division of Fluke Corporation operates two accredited SPRT calibration facilities that provide SPRT calibrations at very low levels of uncertainty; one in the US and one in the UK. Competency and equivalency must be demonstrated for both facilities. However, because of the low levels of uncertainty involved, the required experiments are expensive and very challenging. In the US a proficiency test is available through NVLAP based on the long standing NIST measurement assurance program (MAP) to accomplish this purpose. Although needed, a PT of this level is not available elsewhere in the world.

Consequently, an alternative approach is required. This paper will describe the approach taken in an effort to show both competency and equivalency of these two facilities and a logical link to the US NVLAP proficiency test conducted at the US facility. Additionally, the description of the tests and establishment of performance criteria will disclose the seriousness and rigor to which this activity was held. Finally, the data will demonstrate that not only are such tests possible, but the degree of equivalence attained can be very high.