8
MODE
Pressing the MODE button allows the
user to determine the type of measure-
ment that will be taken or select the
length of rods connected to the probe.
Data Collection Modes
Available measurement options are volumetric water con-
tent (VWC) using the standard or high clay mode (see p.
22), up to two relative water content modes (see p. 24), or
measurement period (in microseconds). Relative water
content options will only appear if they are configured in
the software (see "Meter Settings", p. 16). The period
measurement is available for users interested in perform-
ing soil
-
specific calibrations (see Appendix 2).
Note: There is not a high clay measurement calibration for
the
1.5”
rods. The meter will display dashes if this mode/
rod length combination is selected.
Changing Rod Length
In order to get accurate volumetric or relative water con-
tent (VWC or RWC) readings, the rod length setting must
be correct. In the VWC modes, the currently selected rod
length appears in the lower left corner of the LCD screen.
The options are Long
(7.9”),
Medium
(4.7”),
Short
(3.0”),
Turf
(1.5”),
T
-
BLK(1.0
”),
and T
-
BLK(0.5
”)
rods. The fi-
nal two options are only available for customers that have
purchased the TDR Turf Rod Spacer (item 6435SP). See
p. 17 for further information. Press the MODE button un-
til the LCD displays the rod length options screen. Press-
ing the DELETE/CLR AVG button will allow you to tog-
gle between the five choices.
MODE
ROD=MED (4.7in)
HIT DEL To Chnge
Rod Length Options Screen
