Author(s)

P. Hunziker and Ed. Binggeli

Abstract

Among the multitude of tests performed in NC Laboratory Spiez, conventional as well as nuclear air blast and ground shock loadings are simulated. For these tests, piezoelectric transducers are used for both pressure and acceleration mea- surements. In order to keep the uncertainty of measurement as small as possible, NC Laboratory Spiez developed two facilities for the absolute calibration of piezoelectric pressure and acceleration transducers. With one of the facilities piezoelectric pressure gauges in the range of 0.5 to 30 bar can be calibrated. The calibration system is based on a so-called dynamic pressure equilibrium princi- ple. The transducer sensitivity is determined by measuring the pressure in the equilibrium volume by using a pressure-transfer standard unit. The other system allows the

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