Hydro-Control VI moisture control unit for concrete mixers

Hydronix is committed to an on-going programme of development for all of its products to continue to provide their customers with the most efficient systems available. As part of that commitment, we have recently upgraded the software in the Hydro-Control VI to Version

This page provides an overview of the main features and enhancements to the functionality of the Hydro-Control VI system. Further details can be found in the Readme.txt file which is released with the upgrade files for each version, from v1.4.0.0 upwards.

Initial Mix Phase and Pre-wet Calculation Mode Function

Because concrete mix design has advanced in recent years there has been an increasing need to adapt when the water is calculated and added. Certain mixes can be unstable once the cement is added, others use metal fibres for example. It was identified that being able to calculate how much water to add based on the dry aggregates alone, or the aggregates after pre-wet but before cement, metal fibres or some SCC super-plasticizers would be beneficial. To accommodate this, the initial mix time has been added and also the option to calculate the main water addition based on a value determined during the pre-wet. This ensures the Hydro-Control VI has increased flexibility to enable optimal control of almost any site requirement.

Remote Support

Using VNC technology it is now possible to connect to a Hydro-Control VI remotely via Ethernet. This will enable Hydronix or its authorised Resellers to provide performance adjustments, diagnostics and remote support functionality for optimum efficiency.

Hydronix has its own dedicated server for this function or, dependant on security requirements, the user can choose to host their own remote support server. Further details can be found in the Hydro-Control VI Installation Guide.

External Manual Trim Button Support (for users with water meters)

It may occasionally be necessary to add water whilst looking in the mixer through an inspection hatch, for example when experimenting with mix designs. In these situations a physical button to manually control the water valves directly can be installed close to the mixer inspection hatch. The Hydro-Control VI will count all water added between the initial mix phase and mix complete. In standby mode water added externally is counted (useful during commissioning) but is reset and not recorded when a mix starts.

HC04 RS232 Backwards compatibility

A Hydro-Control IV RS232 mode has been added providing backwards compatibility for older control system RS232 command interfaces.

User Accounts

There are now 4 user access levels enabling plants to decide whether user account security is required and if so the level of access different users may require.

Overview Screen “Quick Access” Buttons

The “Plant Operator” user account has been updated so that the day to day running of the Hydro-Control VI can be performed from one screen. There are now “Quick Access” buttons on the right hand side of the Overview screen which enables access to common functions usually found in different pages of the recipe and system menus. For example, changing targets, water amounts and moving between Preset and Automatic modes. This will help to reduce training time and limit access to more advanced features that are not needed by a basic user.

Recording of Mix Temperatures at Mix Complete

The mix temperature (configurable to be either the material temperature reading on the sensor or the temperature reading from a Thermo-tuff sensor) is now recorded in to the mix log at mix complete. This can be extracted via RS232 if “HC06 v2” is selected as the RS232 protocol on set up.

List of Recent RS232 Activity.

A history of previous RS232 commands can be viewed on the RS232 communications screen. This replaces the previous last command received/last reply sent feature and allows users to view a more extended history, particularly if a list of commands is sent automatically from the control system.


The Hydro-Control VI is now available in a range of languages which now includes Russian and Japanese. Japanese is only supported on O.S builds above v1.2. O.S versions beneath this can still run version but Japanese is not a selectable language option.

Languages available in version

  • French
  • German
  • Italian
  • Spanish
  • Dutch
  • Russian
  • Japanese

International Keyboard Layouts

The keyboard layout is now language specific. For example English uses QWERTY layout, French would use AZERTY.

Mouse Support (for users not wishing to use touch screen)

For users who do not wish to use the touch screen interface (or wish to lock the unit in a sealed box) it is possible to enable a mouse pointer and a USB mouse can be used to control the interface.