Model 3440
2
–
1
C
C
h
h
a
a
p
p
t
t
e
e
r
r
2
2
:
:
T
T
h
h
e
e
o
o
r
r
y
y
o
o
f
f
O
O
p
p
e
e
r
r
a
a
t
t
i
i
o
o
n
n
This chapter covers the following topics and tasks:
9
Theory of operation
9
Direct transmission and backscatter modes
9
Overview of density and moisture measurements
9
Explanation of the sources and detector geometry
Summary of Contents for RoadReader 3430
Page 14: ...1 6 Figure 1 Model 3440 Gauge and Accessories...
Page 19: ...Model 3440 2 3 Figure 2 Direct Transmission Geometry Figure 3 Backscatter Geometry...
Page 20: ...2 4 Figure 4 Backscatter Surface Density Effects Top Layer Effect Curves...
Page 22: ...2 6 Figure 5 Effect of Moisture on Depth of Measurement...
Page 164: ...F 2 STANDARD COUNT LOG Gauge Serial Number _____________ Date MS DS Date MS DS...
