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The Today I posted a new web page containing an analysis of the accuracy of my Friez ML-3A microbarograph for December 2016 daily data. The ML-3A is set to sea level pressure and its recorded data was compared with NWS airport data and data from my mercury barometer that was adjusted to sea level values. The analysis may be found at 'Barometric Calculations/Barograph Accuracy'.
I found that my ML-3A is very non-linear, it's accurate near the middle of the chart at 1020 mb but the error increases as the pen moves up or down. A possible cause is discussed in the analysis.
I plan to repeat this analysis in using January 2016 data for this barograph and for 3 other barographs:
Go to Barograph Accuracy Analysis.
I found that my ML-3A is very non-linear, it's accurate near the middle of the chart at 1020 mb but the error increases as the pen moves up or down. A possible cause is discussed in the analysis.
I plan to repeat this analysis in using January 2016 data for this barograph and for 3 other barographs:
- A Belfort Model 800A microbarograph
- A Friez Model 620 barograph
- A Weathertronics Model 7021 barograph
Go to Barograph Accuracy Analysis.
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