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IS THE ARCHIMEDE HR SUITABLE
TO MEASURE ALL KINDS OF LARGE DIAMETERS?
Archimede HR is a device that due to its given flexibility, can be used in many
production fields. Its measurement principle allows to obtain the stated accuracy
when measuring cylindrical parts that do not have irregular shapes, such as those
machined. The uncertainty in the diameter measurement is directly influenced by
the shape of the cylinder. This means that to achieve an accurate measure with Ar-
chimede HR with its stated Accuracy, a cylindrical piece of diameter of 1.000 mm
must have a circularity error of ± 0.04 mm for the HR model, of ± 0.06 mm for the
HA model and around ± 0.12 mm for the LA model. Otherwise it becomes necessary
to perform several measurements on the circumference and detect the value of the
average diameter.
DIAMETRO ARCHIMEDE LA ARCHIMEDE HA ARCHIMEDE HR
500 ± 0.045 mm ± 0.02 mm ± 0.018 mm
1000 ± 0.12 mm ± 0.06 mm ± 0.043 mm
1500 ± 0.245 mm ± 0.12 mm ± 0.085 mm
2000 ± 0.42 mm ± 0.21 mm ± 0.143 mm
2500 ± 0.645 mm ± 0.32 mm ± 0.218 mm
3000 ± 0.92 mm ± 0.46 mm ± 0.310 mm
4000 ± 1.62 mm ± 0.81 mm ± 0.543 mm
5000 ± 2.52 mm ± 1.26 mm ± 0.843 mm
6000 ± 3.62 mm ± 1.81 mm ± 1.21 mm
Tab.1 Archimede Uncertainty
However, it is possible to measure an irregular cylinder repeating the measurement
on different arcs of the same cylinder, to obtain the value of the average diameter.
In any case, the max measurement uncertain0ty for Archimede HR is shown in Tab.1
