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The Percostation operates on 12 V of electricity. A sufficient energy supply can beprovided by a 260 Ah accu, which is recharged by a solar panel. Without recharging,260 Ah provides sufficient energy to power the Percostation for approximately1,5 months.In operation, Percostation software connects to the measurement station(s), readsthe last measurements from its memory and transfers them to a mainframe databasewhere they are stored in files for each individual station. Each file also storesinformation on the structure, materials, and calculated critical tensions, dielectricvalues, and electrical conductivity values for the road structure being monitored.Based on this information, the Percostation software can warn the operator whenconditions in different layers of the road structure and subgrade are approaching acritical state. The operator can use this information when deciding to impose orlift load restrictions, and for determining the maximum allowed axle weightsand/or number of axles.88ETT-Modulsystem för skogstransporter