Process of calibration

The process of calibration involves comparing the measurements of a device or instrument to a known reference or standard of higher accuracy. It's important to note that the specific steps and procedures involved in calibration can vary depending on the type of instrument or equipment being calibrated, the industry requirements, and the calibration laboratory's practices. Calibration is typically performed at regular intervals to ensure ongoing accuracy and reliability of the instrument's measurements. 

Check out the general step-by-step overview of how the calibration process works at Kiwa

• 1

  Selecting a Calibration Standard

  The first step is to identify a suitable calibration standard that has a higher accuracy than the device being calibrated. This standard should be traceable to a recognized national or international measurement standard.

• 2

  Preparing the Instrument

  The instrument or device to be calibrated is prepared by ensuring it is clean, in proper working condition, and free from any defects that could affect its accuracy.

• 3

  Measurement Comparison

  The instrument and the calibration standard are placed in a controlled environment, such as a calibration laboratory. Measurements are taken from both the instrument and the standard simultaneously, or sequentially, under specific conditions, such as temperature, humidity, and pressure.

• 4

  Recording and Analysis

  The measurements obtained from the instrument and the calibration standard are recorded and analyzed. Any differences or deviations between the two measurements are noted.

• 5

  Adjustment and Correction

  If the instrument's measurements deviate from the standard, adjustments or corrections may be applied to bring the instrument's readings into alignment with the reference standard. This may involve modifying calibration constants or performing necessary repairs.

• 6

  Final Verification

  After adjustment, the instrument is re-measured to ensure that the corrections have been effective and that the instrument now meets the required accuracy standards.

• 7

  Calibration Certificate

  Upon successful calibration, a calibration certificate is issued. This certificate provides documented evidence that the instrument has been calibrated, including details such as the date, calibration standards used, measurement results, and any adjustments made.

• 8

  Traceability and Compliance

  The calibration process ensures traceability, which means that the measurements taken can be linked back to the recognized standards through a documented chain of comparisons. This traceability is crucial for maintaining confidence in the accuracy and reliability of measurements and for complying with industry regulations and quality standards.