The proximity of measured values to the true or accepted value, minimizing errors to ensure reliable and consistent results across various applications.
Calibration is the process of adjusting a measuring instrument to ensure that it produces accurate and reliable measurements. Calibration increases accuracy by reducing errors and improving the precision of the instrument. When an instrument is calibrated, it is compared to a known standard or reference value. Any discrepancies between the instrument and the standard are identified and corrected through adjustments to the instrument.
Calibration can increase accuracy in the following ways:
1. Reducing systematic errors: Systematic errors are consistent errors in measurement that can be caused by factors such as instrument bias, drift, or linearity. Calibration can correct these errors by adjusting the calibration of the instrument to match the known standard.
2. Improving precision: Precision is the degree to which repeated measurements of the same quantity are consistent. Calibration can improve precision by reducing random errors caused by environmental factors, fluctuations in the measurement instrument, or human error.
3. Ensuring traceability: Calibration traceability is the ability to trace the calibration of an instrument back to a known standard. Calibration ensures traceability by providing documentation of the calibration process, including the reference standards used, the calibration procedure, and the results.
4. Minimizing uncertainty: Calibration can minimize the uncertainty in measurement results by identifying and correcting errors in the measuring instrument. This can improve the confidence in measurement results and increase the accuracy of the data.
Overall, calibration is essential for ensuring accurate and reliable measurements. Regular calibration of measuring instruments can help to reduce errors, improve precision, ensure traceability, and minimize uncertainty, ultimately increasing the accuracy of measurement results.
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