METHOD OF AND APPARATUS FOR MEASURING PRESSURE, ESPECIALLY VACUUM PRESSURE

摘要

A pressure step (ps) is applied to the interior of a compartment (1). By means of a sensor (5) which monitors the pressure within compartment (1), besides of the prevailing pressure level (Psτ), the transient step response oscillation frequency (fTSR) is registered as indicative of the gas or gas mixture present in the compartment (1).