What is the acceptable accuracy percentage for calibration of gauges in the upper range?

The acceptable accuracy percentage for the calibration of gauges in the upper range is typically set at 2%. This standard ensures that measurements taken using calibrated gauges are reliable and precise, which is crucial in industries where accuracy directly impacts safety and quality.

Calibration accuracy refers to how closely a gauge's measurements align with the true values it is expected to measure. A 2% accuracy level allows for a reasonable margin of error while still ensuring that the devices can perform their intended function effectively. This threshold is often chosen because it balances the need for precise measurements with practical considerations of gauge performance and manufacturing tolerances.

In comparison to the other potential percentages, a 1% accuracy might be too stringent for some applications and could lead to unnecessary costs or complexities in the calibration process. Percentages beyond 2%, such as 3% and 5%, could introduce a level of inaccuracy that may not be acceptable in many scenarios, particularly those that require stringent quality control measures, thus undermining the reliability of the measurement process.