Calibration is the assessment between a known measurement value (the standard) and the value a measurement device gives; Calibration of measuring device with quantity measured such as meter rule, weighing balances, analytical balances.

An instrument “calibration” is the alignment and adjustment of the instrument according to the manufacturer’s instructions and as appropriate as to bringing it to its accuracy within the manufacturer’s predetermined tolerances. This is accompanied with issuance of a “certificate of calibration”.

Calibration of measuring instruments has two objectives. It checks the accuracy of the instrument and determines the traceability of the measurement. In practice, calibration also includes repair of the device when out of calibration.  A report is provided by the calibration expert, which shows the error in measurements with the measuring device before and after the calibration. So one must have a good understanding of the different types of measurement errors.

So why do we need to calibrate our instrument?

The accuracy of all measuring devices degrade over time, Inevitably due to constant use of the device. However, changes in accuracy is caused by electric, mechanical shock or unsafe working conditions.  Depending on the type of the instrument and the environment in which it is being used, it may degrade very quickly or over a long period of time.  Calibration improves the accuracy of the measuring device while this in turn improve the measured product quality.

When should an instrument be calibrated?

Weekly calibrations are good starting point for general use as recommended by experts, this should be driven by the level of threat. The higher or more frequent the risk, the more frequently calibration should take place.

All instruments that provides accurate readings to observations should be calibrated for better performance and to reduce error. Calibrations of machine is done by professionals and this requires training. Calibration certificate is issued on the machine after which it has been calibrated.

Finlab Nigeria Limited prides itself of experts with valuable experience on calibration of various instruments over the years. Finlab have worked with industries, institutions and research centres in the calibrations of their instruments. Experts at Finlab also train personnel in the calibration of measuring instruments. Certificate is awarded for such trainings.


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