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POLARES32 electrical imaging system for tomography makes use of innovative technology based on Alternate Current (AC) to simultaneously measure and display all survey parameters: soil resistivity, current, voltage, self potential, induced polarization and quality of the measurements. 
Compact-sized, simple and intuitive, it easily manages all multi-electrode array configurations for the measurement of apparent resistivity: Schlumberger, Wenner, Dipole-Dipole and any other User defined 4-poles configurations.

Equipped with an automatic “multiplexer” to commute signals on the different electrodes, the instrument can measure both current and voltage with microprocessor-controlled sequence of measurements. 
The acquisition controlling system, the power section and the multiplexers for the first 32 electrodes are now integrated in the main unit.

POLARES32 works connected with external laptop PC (to be supplied by the End User); with its data acquisition software supplied with the instrument - with free upgrades for the whole lifetime of the instrument - it has been designed to be a very flexible ERT system, easy to use and with top-level performances.
The simple and intuitive data acquisition software allows you to test all the electrodes, quickly set all the acquisition parameters, manage the type of spreading chosen, always have the measurements under control and save the acquisitions directly in your project directory.
The 12V battery used to energize the ground remains external (not included in the supply, as it is easily available everywhere), together with the signal switching system for each set of 16 electrodes in addition to the first 32 (e.g. the 48-electrode system includes 1x external MPX).