4
OPERATION
b. Highlight letters and press Enter after each one (Figure2).
A decimal point is not allowed as the first character of a test name.
Toggle between upper and lower case by selecting the boxed up arrow in the lower right
of the screen.
To add a space or delete a character, navigate to the test name and use the RIGHT or
LEFT buttons, respectively.
The test name can have up to 20 characters.
Figure2 Name screen
4. Select Done and press Enter to save the new test name.
Press BACK to cancel without saving changes.
NOTE: When downloading tests as a comma-separated value file format (*.csv), the degree symbol and ± symbol
are omitted from the test name in the test summary information.
5. Configure test settings by selecting Settings.
Different soil types may require different parameters for an optimum infiltration test.
Adjust settings to change pressure heads, soak time, number of cycles, and hold time as
well as to inform the control unit of the insertion ring depth (Figure3).
Figure3 Settings options
a. Set desired hydrostatic pressure.
Hydrostatic pressure for the low and high pressure heads must be between 0 and
40 cm. Generally, soils with high infiltration rates require lower pressure head settings
than soils with low infiltration rates. A pressure difference of at least 5 cm between
the low and high pressure heads is normally recommended, except in sites with high
infiltration rates. In such cases, a pressure difference of 2 cm is sufficient to help