MMP20 SONO-DIS (option D)
Hauser
Page 47
14.4.1
Single value/Average value mode
The operating mode of the SONO-DIS handheld device can be changed in this menu item.
With the "Single value" option, the user selects an individual measurement of the three
probe parameters: moisture, temperature and EC-Trime.
Depending on the selected calibration, the "moisture" parameter displays the moisture as a
volumetric or gravimetric percent or can output the transit time of the TDR pulse. If the transit
time is displayed, the percentage sign is understood as "Raw value tp".
If the "Average" option is selected, only the moisture is determined - in %vol or %grav depending
on the calibration selected - or the transit time in tp. The measured value is saved in a list of up
to six measured values. The arithmetic average is calculated from this list.
Note:
Only a maximum of 6 values can be saved in the list. Older values are removed
from the list and are no longer used to calculate the average.
The "Water calculation" setting activates a mode that indicates the water quantity in the material
being measured in l/m³. To be able to measure larger volumes of material, a material sample can
be taken at several points and an average calculated.
Press the "Up"
and "Down"
keys to highlight the desired entry and press the "Measure" key
to select it. Once the entry has been selected, the symbol appears in the top right-hand corner of
the display indicating that the option has been activated and saved.
14.4.2
Material calibration
Different calibrations are saved in the probe depending on the intended application of the probe.
This can be volumetric calibrations for soils of different densities, gravimetric calibrations for sand
moisture measurements or also transit time calibrations.
You can select the calibration needed for your application in the "Material calibration" menu item.
This makes it possible to use the same probe for different applications. In addition, you also have the
option of programming and performing your own calibrations here in order to be able to measure
special materials.
Once you have selected the "Material cal." menu item,
choose either "SELECT" to set one of the 15 calibrations
or "CUSTOMIZE" to program a new calibration to one of
the 15 calibrations saved in the memory.
