HCQ - Indicator

The HCQ Indicator measures the stiffness of the soil or asphalt and displays the HMV value in the instrument panel. This value indicates the degree of compaction already achieved, thereby assisting drivers, since with the aid of this information they can more rapidly decide whether the soil requires further compacting. This minimises the number of passes and prevents overcompaction. The HCQ Indicator consists of a sensor inside the drum, a processor and a display. The sensor measures the vertical acceleration of the drum. The processor calculates the HMV value from the measured signals and displays this value to the driver in the cab.

For tandem or combination rollers, the HCQ Indicator is additionally equipped with an infrared temperature sensor and a continuous temperature display in the cab, giving the driver a clearer basis for assessing compactability and the HMV values for asphalt compaction.