Notes on the resolution of different measuring amplifiers models for different data frequencies
f "resolution" is the "smallest readable step", the question can be answered with the noise amplitude of the measuring amplifier: A good measuring amplifier should solve the measuring range from 0 ... + 2 mV / V in at least 10,000 readable steps.
This means that the noise amplitude is less than 2 mV/V / 10000 = 200 nV/V.
In the case of a sensor with a nominal force of 100 N and 2 mV/V output signal, you can read 0.01 N, only the third decimal point will fluctuate.
However, resolution does not mean accuracy: due to temperature-induced drift or by zero-point return error or creep error, the display may differ by more than 0.01 N after a few seconds or after a load cycle.
The resolution of the measuring amplifier is a function of the data frequency, and thus depends on the filtering of the measured data. The noise amplitude increases with a higher data frequency. Approximately 10 times the data frequency requires a 3-times noise amplitude. This is the same effect as in analog low-pass filters.
The noise amplitude is also influenced by the cable routing and the interference of signals in cables and leads.
