The primary calibration of pressure transducers is at present realized by static procedures only. Subsequent dynamic calibrations in this field are realized by comparison measurements with a statically calibrated reference sensor. This paper describes a route to gain traceability for dynamic calibration by means of laser interferometry. As an instantaneous inertia-free measurement, the described procedure has the potential to measure the so far unknown dynamic response of pressure transducers directly with far higher bandwidth than available by the use of a classical reference transducer. This article describes the general principle employed to gain traceability, the experimental set-ups which are used for the realization, some thermophysical and interferometric background of the measurements, and the first measurement results acquired with the new set-up.
展开▼
