Can the limitations be overcome by innovative designs?
Yes, if not all but some of the limits have been extended by the use of innovative designs utilizing the latest developments in the technology. • Utilizing a 3-electrode probe structure, incorporating an active shield, a coat immunizing circuitry, and the admittance principle of measurement, has minimized material coating and build up problems. • A discharge device connected between the sense electrode and ground protects the circuit components from failure due to high voltage static charge accumulation on the sense electrode. • A special probe comprising a separate electrode that is permanently dipped in the liquid serves as a measurement device that continuously monitors the change in the dielectric constant of the liquid. This signal is used to compensate for the dielectric changes of the material. The system therefore needs no re-calibration. • Microprocessor based systems incorporating intelligent digital communication between the electronic insert in the probe head and the evalua
