Uni-Probe LB 490
BERTHOLD TECHNOLOGIES GmbH & Co. KG
2 – 119
Volume 2 1 System Description
2
1 System Description
1.1 Measuring System
1.1.1 Basic Measuring Configuration
Uni-Probe LB 490 is a level gauging system consisting of scintilla-
tion detector and evaluation unit in one housing.
The Uni-Probe LB 490 utilizes the radiometric measuring method,
i.e. the absorption of Gamma radiation passing through the product
being measured. In order to obtain an optimum measuring effect at
minimal source activity, the ideal measuring geometry is calculated
for each measuring site and the source is designed accordingly.
One point or rod source and one scintillation counter (rod or point
detector) are used for this measurement method (see page 2–
126). The radiation source is installed in a shielding.
Uni-Probe LB 490 is an all-in-one device, including the required
components, scintillation counters, power supply and the entire
evaluation electronics, in one device. Up to 8 Uni-Probe detectors
can be linked for larger measuring ranges (multi-detector opera-
tion, see page 2–121) or the Tower-Sens version can be used.
Figure 1-1 Basic measuring configuration
External power
supply
HART
®
Communicator
Process control with
SIMATIC PDM
HART
®
current output
Source in
shielding
Uni-Probe
LB 490
EX zone
Container Tank
Reactor
connected notebook
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