The Tettex 2830/2831 is the result of extensive research and years of experience testing dielectric properties of liquid and solid insulating materials. It incorporates a fast and highly advanced procedure to measure Capacitance and tan, DC resistance and relative permittivity er (dielectric constant) of liquid or solid insulating materials. A simple one-time-connection system together with resistance measurement according to pre-selected standards drastically reduces measuring time.The system consists of 2830, the measuring bridge and control unit, and 2831, the extension unit.