Berthold DUO XPERT LB 470RID, Руководство по эксплуатации

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3 System Description LB 470RID Level
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56925-1BA2 Rev.02, 05/2021
3.5 Measurement Arrangements
The detector and/or the source are rod-shaped for a radiometric level measure-
ment, so as to form a triangular or rectangular useful beam field. The change of
the measurement signal
for different level results from the different sized covering
of the radiation field.
The marking grooves on the detector housing highlight the sensitive area of the
detector. The detector must be mounted on the container so that the desired
measuring range is covered by the sensitive area.
In a cascaded system (with multiple detectors), the lower marking groove of the
1st detector must match the upper of the 2nd detector etc. (Fig. 9).
1
2
3
4
5
6
7 Point source / shield
Mounting base with source
Level
Radiation field
Upper marking groove
Rod detector
Lower marking groove
Fig. 8 Schema point source - rod detector