A differential microbarometer allowing the measurement of atmospheric pressure fluctuations with periods from 5 s to 18 h and resolution from 0.2 to 2.0 Pa is described. Experimental results of its calibration are in good agreement with acoustic theory provided that the transition from adiabatic to isothermal behavior is taken into account. Suggestions are made on the design of the instrument and the prediction of its transfer function from easily measurable quantities.
The transfer function of a differential microbarometer
RICHIARDONE, Renzo
1993-01-01
Abstract
A differential microbarometer allowing the measurement of atmospheric pressure fluctuations with periods from 5 s to 18 h and resolution from 0.2 to 2.0 Pa is described. Experimental results of its calibration are in good agreement with acoustic theory provided that the transition from adiabatic to isothermal behavior is taken into account. Suggestions are made on the design of the instrument and the prediction of its transfer function from easily measurable quantities.
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