The main goal of this thesis is to analyze a variety of influencing factors
on the metrological properties of a prototype comparator. As a result of
the analysis, available optimization potential is supposed to be extracted.
- The analysis starts with an exact analysis of the software. It was found
that the carousel position slightly drifts after fine positioning. Causes
of this motion are mainly mechanical properties and effects. A final
conclusion of necessary changes could only be drawn after further
continuing examinations. To better estimate the motion of the carousel,
measured values were converted to one unit of length. - Furthermore,
software analysis shows that the timing could be improved. The reasons for
the effects are found in this thesis. A modification of the maximum time
for the change of balances solves this problem. - To examine the loading
procedure and the weight loading equipment the appropriate measuring module
is chosen and an equivalent measuring program developed. The functionality
of the chosen measuring arrangement was checked. - A mathematical
description of the influence of the deflection and oscillation of the pan
on the measure result is described by defining the properties of the
connecting pivot. In this regard, it is then possible to assign adjustment
rules that reduce measurement errors due to error oscillation to a reliable
degree. Further influencing factors on error oscillation and the
replication of the weight changes are settling velocity and surface
structure of the weights. It is shown that the chosen settling velocity is
ideal. The oscillation of the pan can be reduced by elastic impacts.
Beneficently, there are no significant friction effects.