A microprocessor controlled instrument that; can be used in physical chemistry research laboratories has been designed and constructed. The intended use is the measurement,of the dipole moment and determination of the temperature dependency of the dipole moment far polar substances; especially for macromolecules, Measurement techniques with conventional dipolmeters require fine adjustments and measurements which seem to bt very tedious and time consuming. Provided automation enables very frequent measurements with a step of 1 degrees C and disallows any user-oriented error. The dielectric constant measurement is performed within an accuracy limit of less than +/- 0.001. Furthermore, the equipment designed provides the opportunity of processing and evaluating the data obtained with the use of a personal computer.