Measurement uncertainties are no exception - every measurement in research and industry is associated with a certain inaccuracy. Even small fluctuations in the ambient temperature can lead to deviations that make the measurement result unreliable and thus unusable. Knowledge of the respective measurement uncertainty is therefore indispensable for meaningful measurement results. All factors that could have an effect on the measurement must be included in the calculation. The problem: the more elements the measurement chain contains, the more complex the determination of the measurement uncertainty becomes. Previously, a user had to view the respective data sheet for each individual component of the measurement chain, check individual specifications and - in addition to external influences - include them in the calculation.
The calculation itself as well as the subsequent evaluation of the data requires extensive specialist knowledge and a great deal of experience. The effort is often so high that in many cases generous assumptions are made or the calculation of the measurement uncertainty is omitted completely in order to keep measurement processes economical and manageable. If, on the other hand, one assumes that the uncertainty is too great, this has a negative influence on the economic efficiency of the entire process. If the uncertainty of measurement is determined reliably, tolerance limits can be defined more narrowly and the process can thus be made more efficient.
This is where Kistler comes in with its KiXact technology. As part of the KiDAQ data acquisition system, it automatically calculates the measurement uncertainty. The results can be analyzed using the supplied KiStudioLab software. External influencing factors such as ambient temperature and humidity are stored in the program for the respective measurement and included in the calculation by KiXact. And because Kistler supplies the complete measurement chain, KiXact is already optimally adjusted to the respective setup and the associated sensors.
KiXact thus provides more than just a tolerance interval. The analysis recognizes at an early stage which factors in the measurement chain influence the measurement - and thus gives the user the possibility to adjust parameters accordingly. The result is qualitatively more meaningful measurements with less uncertainty.
"Research results are only valid if they are based on accurate and above all reliable measurement results," says Michael Lauffer, Product Manager DAQ Systems at Kistler. "KiXact can help to relieve the research budget here. For industry, we see the advantage of KiXact above all in its ability to optimize processes by including measurement uncertainties faster and without complicated formulas. If you have the topic of measurement uncertainty under control, you will get better results."
The KiDAQ data acquisition system is modular both in terms of hardware and software. Kistler offers a large selection of measurement modules with more than 20 different measurement types. The modules are available in three different housings. They thus offer the user maximum flexibility for his measuring task. All measuring units can be precisely time-synchronized. A cloud-based platform also enables future extensions by partner companies.