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Title: Bilateral Comparison Between Nmisa And Vtt - Mikes - Part Of The Nmisa Flow Laboratory Journey To Accreditation
Author: D. Jonker R. Hgstrm m. W. Dlamini
Source: Flomeko 2016
Year Published: 2016
Abstract: The NMISA Flow laboratory is in the process of obtaining ISO/IEC 17025 accreditation. The laboratory is compelled to perform the majority of gas flow calibrations in South Africa, due to severely limited accredited gas flow calibration capacity in industry. This is resulting in unacceptable long lead times. The laboratory is equipped with a positive displacement piston prover as the highest - level standard. Traceability is obtained by sending this secondary standard to o verseas National Metrology Institutes for calibration. The necessity of sending the reference standard overseas for regular re - calibration in order to maintain sufficient confidence in the reliability of the results, means an absence of about two months fr om the laboratory, creating a further impact on the calibration lead times

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