Troxler RoadReader Plus 3450, Manual Of Operation And Instruction

Page: 52 / 201

Model 3450 3–27
% AIR VOIDS (SPECIAL KEY)
The gauge uses the specific gravity of the material to calculate
percent air voids and void ratio in soil mode only. The
% Air Voids
feature allows the operator to enter the specific gravity of a material
and disable or enable the percent air voids display.
NOTE
To display percent air voids in asphalt or thin layer
mode, enter a voidless density target value (see the
Target section that begins on page 3–19).
To access the % Air Voids feature, press the
〈
SPECIAL
〉
key. At the
Special functions menu, access special operations by pressing
〈
1
〉
.
At the Special Operation menu, access percent air voids by pressing
〈
4
〉
. The gauge displays the % Air Voids menu:
The current specific gravity (default 2.70) is shown on the third line.
To either enable an existing specific gravity or enter a new one,
press
〈
2
〉
at the % Air Voids menu. The gauge prompts the operator
for a new specific gravity. If the displayed specific gravity is
acceptable, press the
〈
ENTER
〉
key. To change the specific gravity,
use the numeric keys to do so, then press the
〈
ENTER
〉
key. In
either case, the gauge enables the percent air voids display and
returns to the
Ready screen.
To disable the percent air voids display, press
〈
3
〉
at the % Air Voids
menu. The gauge disables the percent air voids display and returns
to the
Ready screen.
% Air Voids: On
1- Change Spec Grav
2- Enable
SG=2.70
3- Disable
3. G
ETTI
NG
S
TA
RTE
D