Owner's manual

Density Gage Manual 012407
46
Calibration Constant
The two values, the reference density (d
o
) and the calibration constant (1/ut), are used by the X96N algorithm to calculate process
density (d).
tut1/ut
2" 0.4 2.5
3" 0.6 1.6
4" 0.8 1.25
5" 1.0 1.0
6" 1.2 0.825
8" 1.6 0.625
10" 2.0 0.5
t = mat'l thickness (pipe I.D.)
u = absorption coefficient
= 0.2 for Cs137
1/ut = calibration constant
Transmission/Absorption Table
Calibration Curve
The first curve below shows the relationship for a single-point calibration between the Low Reference, the Calibration constant,
and the X96S output value.
The calibration curve below depicts a two-point calibration and the relationship between the Low Reference, High Calibrate, and
the X96S output value.