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Relative accuracy of the MPXV5100DP

Question asked by Clemens Clausen on Apr 8, 2019
Latest reply on Apr 11, 2019 by Jose Alberto Reyes Morales

Hi,

We are using the MPXV5100DP pressure sensor in relative mode, meaning that we use an offset to always start from 0 for our measurement. The datasheet says that the maximum error is +-2.5kPa / 25 mbar. However, I believe this is the absolute accuracy. Is there a measure for the relative accuracy? To illustrate, it says the following as foot note for the accuracy:

Accuracy (error budget) consists of the following: Linearity: [...] Temperature hysteresis: [...] Pressure hysteresis: [...] TcSpan: [...] TcOffset: [...] Variation from nominal: The variation from nominal values, for offset or full-scale span, as a percent of VFSS at 25 °C.

 

How do I get the accuracy without the last item, the variation form nominal? Because my measurement is relative, I do not care if the two sensor are completely offset in the beginning. But the accuracy of the linearity etc. does matter. 

 

Thanks,

Clemens

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