Troxler RoadReader 3430 - Measurement Specifications

B–2
M
M
e
e
a
a
s
s
u
u
r
r
e
e
m
m
e
e
n
n
t
t
S
S
p
p
e
e
c
c
i
i
f
f
i
i
c
c
a
a
t
t
i
i
o
o
n
n
s
s
Density at 2000 kg/m3
Direct Transmission (150 mm)
.25 min
1 min
4 min
Precision (kg/m
3
)
r6.8
r3.40
r1.70
Composition error (kg/m
3
)
r20.0
r20.0
r20.0
Surface error (kg/m
3
)
(100% Void)
–17.0
–17.0
–17.0
Backscatter (98%, 100 mm)
.25 min
1 min
4 min
Precision (kg/m
3
)
r16.0
r8.00
r4.00
Composition error (kg/m
3
)
r40.0
r40.0
r40.0
Surface error (kg/m
3
)
(100% Void)
–75.0
–75.0
–75.0
Moisture at 240 kg/m
3
.25 min
1 min
4 min
Precision (kg/m
3
)
r10.3
r5.1
r2.6
Surface error (kg/m
3
)
(1.25 mm, 100% void, kg/m
3
)
–18.0
–18.0
–18.0
Precision is defined as rone (1) standard deviation in density
readings. This number is calculated by the ratio of the standard
deviation in the counting rate and the slope of the calibration
curve at a given density.