研究目的
Investigating the evaluation of standard uncertainty depends on travelling standard instability and its influence on the evaluation uncertainty of key comparison reference value during a key comparison of national standards.
研究成果
The paper concludes that the instability of the travelling standard directly influences the quality of key comparison. The proposed approach for evaluating standard uncertainty depends on travelling standard instability is applied successfully in the key comparison COOMET.EM–K5, demonstrating the stability of the travelling standard RD-33-332 during the comparison.
研究不足
The approach primarily considers long-term instability of the travelling standard, which directly influences the quality of key comparison. Short-term instabilities arising from staff qualification, measurement methods, or operating conditions are not the focus.
