NEW EXPERIENCES WITH A FORCE MEASURING FACILITY FROM THE RANGE FROM 1 mN TO 5 N
S. Niehe
Abstract:
In this contribution new experiences with a force measuring facility [1] for the range from 1 mN to 5 N consisting of a piezoelectric positioning unit for force generation and a precision compensation balance for force measuring are presented. The enhancement of the facility by means of a rotational table allows to rotate the force transducer under test around its axis and to measure the sensitivity of the transducer at different positions. By averaging the measured sensitivities of a complete rotation cycle the rotation effect can be taken into account and the deviation from the calibration of the investigated force transducer in a deadweight force standard machine is then of the order of 10-4 in relative terms. This improves the deviation of earlier results [1] without consideration of rotation effects about a factor of 8.
