Precise measurements despite oscillations and vibrations
Legal regulations such as the National legal for trade requirements (German abbreviation FPV) ensure the stated amounts are really inside the packing. Modern checkweighers check use either random sampling or a 100% check to find out if the stated amounts are undercut or exceeded. Depending on production speed and external interference effects, considerable requirements are placed on the checkweighers to do just that. For example, if a production plant is exposed to strong vibrations caused by wind or a tram passing by the building, the measurement values are falsified, rendering them useless. A great deal of expertise is required to make sure checkweighers supply reliable results despite such environmental influences.