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Running the First Mix
Recipe wizard parameter
Wet Mix Time
2 Setting the Recipe for the First Mix
Before selecting which control mode to use for a given recipe it is necessary to begin using the
Preset Mode to make a number of batches by adding water in a controlled manner and observing
the mixing characteristics of the mixer.
Recipe Setup
2.1
2.1.1
Selecting Mix Times
The dry and wet mixing times will ultimately affect how well the materials are mixed. Users
need to be aware that when these times are reduced, as the case may be in high production
environments, there is a balance between speed and quality.
The sensor shows the moisture variation as the materials are mixed. When the reading
stabilises, this indicates a homogenous mix. When using CALC Mode it is important to
obtain stable dry and wet mix readings to use for calibrating the water calculation. After
calibration is complete, the wet mix time can be reduced depending on the required quality
and homogeneity of the mix.
The mixing times can only be determined empirically as there are many factors that affect
how long it takes to mix all the ingredients in the mixer. The best way to establish suitable
Dry Mix and Wet Mix times is to extend them to begin with, and then shorten once you know
how long the signal has been stable for.
Using Auto-track during initial setup and testing is not recommended until the mixer
characteristics have been observed.
Moisture
Mixer
Dry Mix
Loading
0
10
20
Moisture
Mixer
Dry Mix
Loading
0
10
20
36
Hydro-Control VI Operators Guide HD0456 Rev 1.7.1
Description
This is the amount of time to mix for after adding the main water
and before signalling that the mix is complete.
Water
Addition
Dry Mix Stable
30
40
50
60
70
Water
Wet Mix
Addition
30
40
50
60
70
Figure 15: Extending the mix times for calibration
Wet Mix Stable
Wet Mix
80
90 100 110 120 130 140 150 160
Discharge
80
90 100 110 120 130 140 150 160
Chapter 7
Discharge
Time
Time
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