Uni-Probe LB 490
BERTHOLD TECHNOLOGIES GmbH & Co. KG
5 – 531
Volume 5 8 Explanations
5
8.3 Linear and Exponential
This function is used only for one- and two-point calibrations.
Linear The relation between level and count rate is linear.
Figure 8-4 Linear relation
Linear calibration is used in applications involving rod sources and
point detectors
Exponential The relation between level and count rate is an exponential func-
tion.
Figure 8-5 Exponential
This calibration is used in applications involving point sources and
point detectors.
8.3.1 Exponential One-Point Calibration
If the tank cannot be completely filled after operation has started,
then a one-point calibration can be performed. To this end, enter
an absorption path and the product density. Then an empty calibra-
tion is performed for which the initial level value is entered as a
percentage and the corresponding count rate is entered. For full
100%
0%
CPS
Meas. range
absorption
path
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