Abstract: An inventory management system automatic monitors and control of fill levels or pressure states. The inventory management system supports bidirectional communication between the individual field devices and a central system. The bidirectional communication takes place using a web client by way of a communications network (e.g., the Internet) so that broadband data exchange becomes possible. Administration of the measured data takes place centrally and automatically.

Abstract: A process is disclosed for evaluating a measuring device comprising a capacitor (CM), with stages for charging the capacitor (CM) over an initial charging period (tk1, tk2) and for determining the capacitance charge as an initial measured value (tml). To determine a measuring condition that changes a normal state of the capacitance, e.g., moist as opposed to dry surroundings for the measuring cell, the process exhibits the following additional steps: charging the capacitance (CM) over a second charging period (tk2), which differs from the first charging period (tk1); determining the charge of the capacitance (CM) as a second measured value (tm2); and comparing the first and second measured values (tk1, tk2) to establish the comparative result.