Auto Mode; Figure 23: The Moisture During Auto Mode - Hydronix Hydro-Control VI Operator's Manual

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Chapter 8

3 AUTO Mode

Mixer
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Moisture
Introduction
3.1
AUTO Mode adds water progressively to reach the moisture target defined in the recipe
parameters.
Advantages:
As the control only relies on the current reading and moisture target, no calibration of
the recipe is required, if the true moisture values do not need to be displayed.
A short dry mixing time can be used, for example 10 seconds, as the water amount is
not calculated at the end of the dry mix phase.
AUTO Mode is more independent of the dry weight of material. Therefore the control
will work even if there are minor changes in the batch sizes. It is still recommended to
use a separate recipe for large changes in batch size, for example, half batches.
Disadvantages:
The AUTO Mode is more dependent on mixer efficiency than the CALC Mode as the
sensor must be able to monitor the water that has been dosed. This is not always the
case in some mixers and therefore it can take a long time for total water addition, as
water must be added more slowly to allow the sensor to detect the added water and for
the Hydro-Control VI to react accordingly.
The AUTO Mode parameters may need to be adjusted for optimal performance of the
system as described in section 3.3 below.
Configuring the recipe
3.2
It is not necessary to calibrate a recipe when using AUTO Mode unless real moisture values
are required. The only recipe parameter that is required for the Hydro-Control to add the correct
quantity of water for each mix is the 'Moisture Target %' which is determined by running test
mixes and recording the value at the end of a good quality mix.
When a recipe is created the Hydro-Control uses a default calibration to calculate the moisture
for display. Some operators prefer to use an arbitrary value for the moisture target such as 10%
and to use this to monitor repeatability and deviation.
Dry Mix
Main Water Addition
Time
Target
Current moisture
monitored and water
added to reach the target
moisture

Figure 23: The moisture during AUTO Mode

Using Moisture Control
Wet Mix Time
Hydro-Control VI Operators Guide HD0456 Rev 1.7.1
Discharge
Time
49

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