Vaisala BAROCAP PTB330, Руководство пользователя

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Appendix A ______________________________________________________ Calculation Formulas
VAISALA ______________________________________________________________________ 127
APPENDIX A
CALCULATION FORMULAS
This appendix contains the calculation formulas used by the product.
Height compensated pressure values (QFE, QNH, and HCP) are
calculated using the following equations:
0706-109
where:
p = measured air pressure [hPa]
h
QFE
= height difference between the barometer and reference
level [m]
g = 9.81 [m/s2]
R = 287 [J/kg/K]
T = temperature [K]