Troxler RoadReader Plus 3450 - Page 102

Model 3450
6–19
Go to Thin Special Calibration menu and press 〈1〉 as described
above. The gauge displays:
When taking counts on thin layer asphalt, Troxler recommends
averaging large numbers of readings over the same material to
ensure results that are more accurate. Use at least ten (10) gauge
readings before cutting cores. Enter the number of measurements
the gauge is to average, and press the
〈ENTER〉 key.
With the source rod in the backscatter position, begin the
measurement by pressing the
〈START〉 key. The gauge displays the
progress.
After taking the reading, the gauge displays the results and prompts
the operator to accept or reject the results. If the operator rejects the
results, the gauge retakes the measurement. If the operator accepts
the results, the gauge continues to the next measurement.
Reposition the gauge and repeat the above procedure for each count
(see Figure 6–2). After taking all the readings, the gauge displays:
Input Number of Thin
Lift Averages
_ _ (3-20)
Then Press ENTER
Ready For
Count 1 Of xx
Place in BS Then
Press START
Special Calib
DC= xxxxx xxxxx
Press ENTER
6. OFFSETS & CALIBRATIONS