Calistaire wrote:Thank you for your reply. In your calculation of the resolution, where did 0.05% come from?
Secondly, I was under the impression that my DAQ would contribute to the resolution. My DAQ resolution is 15 bits. So I thought the resolution I could read would be the range 50kg/(2^15).
Could you offer any clarification? Since the resolution I could read based on the DAQ is lower, does that mean both of those resolutions should be considered, but the laid cell itself will be the limiting factor?
Calistaire,
1. The overall accuracy of 0.05% is determined based on the accuracy of the resistance strain gauge and takes into consideration other elements that would affect accuracy.
Physically, in an ideal state, the resistance of the strain gauge should change in proportion to the value on the real number axis under varying external pressure. However, in practical applications, we must consider the impact of factors such as process, installation method, and processing errors, among others. Therefore, after considering various factors, an overall accuracy of 0.05% was obtained for this model.
2. Yes, your 15-bit DAQ device granted the input a set of 2^15 different input values, but that would also be under ideal conditions, without the effect of any noise and drift.
3. And yes, since your DAQ's resolution is much higher (by orders of magnitude) compared to that of the sensor's, we can go with the accuracy of 0.05% as the overall value.
