[Python] How calculate dB SPL from microphone signal

I have UMIK-1(24bit depth) and calibration file for it, where there is sens factor in dbFS and mic correction. I wrote a script in Python, where I receive a signal from the microphone and I can no longer imagine how to correctly process it in dB SPL.

I know how to use mic correction, but I absolutely dont understand how to use sens factor

I used a lot of combinations of sens factor and my signal, but it doesn't work

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