Volume pressure regulator PREVO

The PREVO 100 is a Volume Pressure Controller (CPV) for the measurement of the geo-mechanical characteristics of soils according to the principle of the expansion of a cylindrical cavity. Powered by a nitrogen cylinder and the driller's battery, the servo valves of the PREVO 100 automatically regulate the pressure levels of the test and the injection of the volume of water into the probe: the applied stress (on the areas or between the areas) is perfectly controlled by the regulation of the PREVO 100 operating in closed loop. Maintaining the stress is perfectly controlled, regardless of the reaction of the soil under stress. The stressing procedure (bearing, duration) is automatically controlled by the ADN + BASALT (or the BAP 160) connected to the PREVO 100 according to the instructions entered by the operator (for example according to standard NF P 94-110 / EN ISO 22476-4).