Troxler Enhanced RoadReader Plus 3451, Manual Of Operation And Instruction

Page: 90 / 247

Model 3451 5–5
MODE
The Model 3451 provides three measurement modes ( Soil , Asphalt ,
and Thin Layer ) for precise readings on base and thin layer asphalt,
concrete, soil, soil-stone aggregate, and similar materials.

Use the Soil mode when measuring soil or a soil-stone
aggregate.

Use Asphalt mode when measuring concrete or asphalt layers of
4 inches or greater.

Select the Thin Layer mode when measuring thin-layer asphalt
of less than 4 inches. In thin layer mode, the gauge can average
up to 20 readings from a single test location. When using this
function, the PDA automatically prompts for repositioning of
the gauge from a test location and begins another measurement.
After all measurements have been completed, the gauge
calculates the average density of the test material. When taking
counts on thin layer asphalt, Troxler recommends averaging
four one-minute readings.
NOTE
The Model 3451 gauge can store measurements
performed using different modes under a single project
name. For example, the operator may select the Soil
mode when setting up the project (see page 3–19), but
can also save Asphalt mode measurements under the
same project.
To change the measurement mode for the current project, press the
〈
Mode
〉
button on the Gauge Setup menu shown on page 5–2.
The PDA displays the message shown in Figure 5–5.

To maintain the current measurement mode, press
〈
Cancel
〉
.

To change measurement modes, press
〈
OK
〉
. The PDA displays
the setup
Wizard
(see page 3–20). Follow the prompts in the
wizard to select the mode, measurement units, count time, and
so on. Upon completion, the wizard requests a project name
while displaying the currently named project file. To change the
project name, enter a new one, or press
〈
ok
〉
to accept the
current name.
5.
SET
U
P
&
T
ARG
E
T
M
E
NUS