The gauge displays the thin layer special calibration name and both
B values. To return to the Thin Lift Special menu, press the
〈ENTER〉 key. Return to the Ready screen by pressing the 〈ESC〉
key.
Create a Thin Layer Special Calibration
To create a thin layer special calibration, the operator must take
readings with the gauge and enter the core density. The gauge uses
these values to calculate the thin layer special calibration constants.
The Model 3450 can store one partial calibration. A partial
calibration allows the operator to enter the asphalt parameters and
take readings at different times.
METHOD 1 – MEASURE DENSITY FIRST. To create a thin
layer special calibration, press 〈4〉 New at the Thin Lift Special menu
shown on page
6–16. The gauge displays the Thin Special
Calibration menu:
If a partial calibration was saved earlier, the gauge will display a P
beside the option entered before (see page 6–21)
. To take readings
for the thin layer special calibration, press
〈1〉 and see Measuring
the Density below. To enter the core density, press
〈2〉 and see
Entering the True Densities on page
6–20.
Measuring the Density. Prepare the test site as described on
page 4–6. Place the gauge on the test site. Lower the source rod to
the backscatter position. Release the trigger and lock the source rod
into position. You should hear a click when the source rod locks into
position.
1-Measure Density
2-Input True Density
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