BERTHOLD TECHNOLOGIES Uni-Probe LB 490 - Page 533

Uni-Probe LB 490
BERTHOLD TECHNOLOGIES GmbH & Co. KG
5 – 533
Volume 5 8 Explanations
5
Example Measurement range MR = 200mm
Absorption path AP = 280mm
Density ρ = 1
Isotope: Co-60
a1 = 0.0044 x 1 x 280 = 1.2320
8.3.2 Exponential Two-Point Calibration
The empty tank is calibrated in value pair 1, while the full tank is
calibrated in value pair 2.
Figure 8-7 Two-point calibration
+
Empty Full
absorption
path
absorption
path