Pneumatic gauge pressure proficiency test in the range from -70 kPa to 0 kPa for Mexican accredited laboratories

S. Zuñiga-Gonzalez, P. Olvera-Arana, J. C. Torres-Guzman, F. J. Flores-Martinez Oral Presentation (Pressure)

Abstract

With the purpose to establish deviations and concordance levels for negative pressure measurements in Mexico, and by a request from the Mexican Accreditation Body (ema), the pressure and vacuum group in CENAM (the Mexican National Metrology Institute) organized a proficiency test among laboratories from the National System of Calibrations (SNC). In this proficiency test most of the Mexican secondary laboratories with the capabilities to perform calibrations in this measurement range participated.<br /> This document presents the results and the concordance level obtained among the laboratories which participated in the proficiency test. The measurements performed by the pilot laboratory (CENAM) are also presented. CENAM established the reference values (error and uncertainty) and determined the drift of the transfer standard during the period of the proficiency test.<br /> The concordance of the results obtained by the laboratories was evaluated by means of the normalized error equation method.

Keywords

pressure, proficiency tests, pneumatic gauge pressure

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IMEKO-TC16-2007-083u.pdf

DOI

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IMEKO TC

TC16 - Pressure and Vacuum Measurement

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