Test and adjustment can be done by positioning a certified weight onto the weighing pan if the weigh module is accessible inside the machine. However, placing a test weight can be impossible, if an application-specific device is on top of the weighing pan.

It is recommended to combine tests with internal and external weights. The test with the internal weight is used to verify accuracy any time needed. The external test weight is used for traceability and to verify the internal test weight.

Calibration with external weight possible