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How To Calibrate Scales With Weights, Calibration Instructions And Manuals

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Central Carolina Scale Service, Repair and Scale Calibration Information


Historically, a calibration has been defined as a process of comparing and recording indicated values obtained from a measuring instrument with the corresponding values obtained when using measurement standards. For example, when calibrating a bench scale, the indicated value from viewing the scale display can be compared with the value of the test weight. This can be done over a range of weights, and a calibration table can be developed that records indicated values from the scale and corresponding values obtained from the different test weights used.

digital weight indicator
1000g balance
truck scale

Scale calibration of a scale is a procedure in which a certified scale technician uses known weight certified by the State of North Carolina Bureau of Weights and Measures, to adjust the response of a mechanical or electronic weighing system to the following tests; The indicator must show zero when there is no weight on scale. When a known weight is applied the indicator must display the exact amount of applied weight. When weight is applied or removed incrementally the scale must display weight equal to that on the scale display. How do you calibrate a scale with no weights?

All scales ideally need to be calibrated when first placed into service to insure accurate operation. Any scale will drift away from its original calibration in time. Wear of mechanical components, age and degree of use, all contribute to calibration drift. Many states require that any scale used to buy/sell based on weight must be NTEP approved and inspected and certified as to it’s accuracy. Normally, we recommend calibration every quarter by a trained scale technician with certified test weights.










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