Troxler 4640-B - Measurement Specifications and Gauge Precision

MEASUREMENT SPECIFICATIONS
GAUGE PRECISION AT 140 PCF (2240 KG/M
3
)
Time (min)
Thickness PCF kg/m
3
0.5 1.0" (2.5cm) ± 1.4 ± 22
2.0" (5.0cm) ± 0.85 ± 14
2.5" (6.3cm) ± 0.69 ± 11
4.0" (10.0cm) ± 0.69 ± 11
1.0 1.0" (2.5cm) ± 1.0 ± 16
2.0" (5.0cm) ± 0.60 ± 10
2.5" (6.3cm) ± 0.50 ± 8
4.0" (10.0cm) ± 0.5 ± 8
2.0 1.0" (2.5cm) ± 0.71 ± 11
2.0" (5.0cm) ± 0.42 ± 7
2.5" (6.3cm) ± 0.37 ± 6
4.0" (10.0cm) ± 0.37 ± 6
4.0 1.0" (2.5cm) ± 0.50 ± 8
2.0" (5.0cm) ± 0.30 ± 5
2.5" (6.3cm) ± 0.25 ± 4
4.0" (10.0cm) ± 0.25 ± 4
Precision is defined as ±one 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.
Appendix B–2