8
Checking the Metrological Specifications
Prerequisites to Be Met before Checking the Metrological Specifications
Place of Installation
– room with a constant ambient temperature (± 0.5K*)
– solid, level surface that is free of vibrations
– no direct heat exposure (sun, heater etc.)
– no drafts
Getting Started:
– Level the balance using the level indicator
– Turn the balance on and allow it to warm up for at least 6 hours.
Test Weights
The span of the balance may be tested only with calibrated weights for which
a calibration certificate has been issued. Always make sure that the individual
weights are traceable to a national standard.
The calibration and vertification certificate must show the nominal mass value,
the deviation from the nominal mass value, as well as the uncertainty of
measurement for each weight. The nominal mass value and deviation from this
value can be added to obtain the exact weight value (conventional mass) of
each weight.
Testing
Testing must be carried out according to the following Standard Operating
Procedure for Testing and in the order given. The test results must be written on
the
Balance Test Record
designed for this purpose.
(
Please make a copy
, see page 43)
