Troxler RoadReader Plus 3450, Manual Of Operation And Instruction

Page: 91 / 201

6–
Enter Moisture Offset (Keypad Entry)
Use standard laboratory methods (for example, oven drying, and so
on) to determine the true moisture content of a sample taken at the
measurement site (
%M
LAB
).
Take a gauge reading at the site. Record the reading ( %M
GAUGE
).
Take multiple samples and measurements, and calculate the average
moisture of the samples. Use this average value for the offset factor
calibration.
Calculate the offset factor ( k ), using the following formula:
k =
%M
LAB
– %M
GAUGE
100 + %M
GAUGE
×
1000
Access the Offset menu by pressing the
〈
OFFSET
〉
key. Access the
Moisture Offset menu by pressing
〈
2
〉
.
Press
〈
3
〉
Change Offset , then
〈
3
〉
Keypad Entry. Follow the gauge
prompts to enter the true moisture and gauge moisture reading. The
gauge displays the moisture offset (
k ) and prompts the operator to
save. To save the offset, press the
〈
YES
〉
key, then select one of the
four memory cell locations.
Moisture Offset
K=xxxx
1-Enable 2-Disable
3-Change Offset