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Saturday, September 4, 2021

Pressure Accuracy Confirmation

I was able to confirm the accuracy of the MPR pressure transducer.

I had a concern that it was not matching official barometric pressure readings for this area.  I found that the official measurements are always adjusted for temperature and altitude.  Effectively, official measurements are what the barometric pressure would be if the measurement was taken at 32F (0C) at sea level.

Once I discovered this, I found the official "station" measurements and found the MPR device is reading accurate to 100 Pa, or about 0.1%.  That is pretty good for a $20 pressure transducer.

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