South African National Accreditation System (SANAS)
AN ACCURACY TEST REPORT
A report gives a person no indication as to the performance of their scale i.e. the repeatability, linearity or of centre errors. There is no uncertainty included in a report as to indicate to the customer if his scale is performing to their needs or requirements.
A SANAS CALIBRATION CERTIFICATE
A SANAS calibration gives customer detailed information as how their scale performs in so far as possible errors. They need to be aware of when weighing something, it provides them with a clear possible uncertainty in measurement, and allows them to make corrections in so far as linearity is concerned. A SANAS calibration allows a person to look at methods of improving loss of stock, and under or over supplying their clients i.e. if scale repeatability, of centre errors or linearity is not up to requirements. This certificate also makes the customer aware that a load cell must be replaced or the necessary repairs under taken to improve the scales performance.