Troxler 3430 Plus, Manual Of Operation And Instruction

Page: 96 / 218

7–
TRENCH OFFSET
To use the gauge in a trench or within 0.6 m (2 ft) of a large vertical
surface, first perform a
trench offset . The trench offset adjusts all
moisture measurements and density measurements from backscatter
to 4 inches. For direct transmission measurements over 4 inches
deep, the gauge will only adjust the moisture measurements. In the
displays shown below,
M refers to trench moisture offset ; D refers
to trench density offset values.
NOTE
Before determining a new trench offset, ensure that a
standard count has been performed recently outside the
trench.
To access the
Trench Offset
menu, press
〈
3
〉
at the
Offset
menu
shown on page 7–2. The gauge displays:
The gauge displays the current offset values on the second line.

To enable the displayed trench offset, press
〈
1
〉
. The gauge
enables the offset, displays a brief confirmation message, and
returns to the
Ready
screen.

To disable the trench offset, press
〈
2
〉
. The gauge disables the
offset, displays a brief confirmation message, and returns to the
Ready
screen.
NOTE
The trench offset is also disabled when the gauge is
turned off.
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