11
Taking Readings
-
Remove one of the
hand screws from the
shaft. This will allow
you to unfold the shaft
to its full length. Re-
turn the screw to lock
the shaft in the extend-
ed position.
-
Screw the rods into
the sockets at the bot-
tom of the probe block.
-
Turn on the meter and
ensure that it is config-
ured with the correct
rod length setting (see Changing Rod Length, p. 8).
-
Select the correct mode setting (see Data Collection
Modes, p. 8). This will bring you to one of the data col-
lection screens. The TDR 300 can be set to one of two
VWC modes, Standard or High Clay. The Standard
mode will be appropriate for most mineral soils. The
High Clay mode will be more accurate for soils with
higher clay contents (> 27%). In VWC mode, the top
line of the display shows the VWC mode and the water
content. The bottom line has probe setting and data file
information.
