An antenna comprises a ground element, a first transmission element, a feed element, a second transmission element and a third transmission element. The engine is connected to a control unit and to a power take-off, which drives the removable agricultural implements, by means of a power take-off transmission with selectable transmission steps. The nonvolatile memory may contain calibration parameters for a heat-sensitive vacuum sensor to compensate for the temperature gradients generated by the ionization gauge. The sensing system includes a light collection device and a sensing platform for disposing a testing object.