The Tettex 2830/2831 is designed to test dielectric properties of liquid and solid insulating materials. The instrument incorporates a fast and advanced procedure to measure capacitance, d.c. resistance and relative permittivity. The graphical user interface of the instrument is highly intuitive. The unit can be used in manual mode, for quick measurements, or in the automated test mode, which supports complete programmed and automated test sequences according to selectable standards. — Haefely Test AG, Basel, Switzerland