Troxler 3440 Plus - MEASUREMENT SPECIFICATIONS

Appendix F–2
MEASUREMENT SPECIFICATIONS
SI UNITS
Density at 2000 kg/m
3
Direct Transmission (150 mm)
.25 min 1 min 4 min
Precision (kg/m
3
) ±6.8 ±3.40 ±1.70
Composition error (kg/m
3
) ±20.0 ±20.0 ±20.0
Surface error (kg/m
3
) –17.0 –17. 0 –17. 0
(100% Void)
Backscatter (98%, 100 mm)
.25 min
1 min
4 min
Precision (kg/m
3
)
±
16.0
±
8.00
±
4.00
Composition error (kg/m
3
)
±40.0
±40.0
±40.0
Surface error (kg/m
3
) –75.0 –75. 0 –75. 0
(100% Void)
Moisture at 240 kg/m
3
.25 min 1 min 4 min
Precision (kg/m
3
)
±
10.3
±
5.1
±
2.6
Surface error
–18.0
–18.0
–18.0
(1.25 mm, 100% void, kg/m
3
)
Precision is defined as ±one (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.