Berthold Duo Xpert LB 478 MPLM, Руководство по эксплуатации

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7 Main Menu Device Setup LB 478 MPLM
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56925-8BA2 Rev.00, 07/2019
Interphase Densities (only master EVU)
An interphase denotes the layer with the respective density. In this menu the in-
terphases are defined and a density is assigned to each interphase. The entered
density should be the upper limit value of the density for this interphase. In addi-
tion to the individual interfaces, it is possible to add a total level. The gas density
should be specified as the value for the total level.
1
2
3 Button < + >
Button < Edit >
Button < - >
4
5
6 Table of added interfaces [kg/cm³]
Interface description
Densitiy Value
Fig. 42 Interphase settings
Densities Overview (only master EVU)
Device Setup | Setup | Densities Overview
The control unit reads the detectors' individual local densities in order to build a
density profile of the vessel's content. This density profile might not be perfectly
monotonous (see Fig. 43, item 1), due to statistics, noise and vortexes inside the
vessel. Thus, the measurement algorithm uses mathematical techniques such as a
special averaging / regression to monotonize and slightly smooth the local densities
(see Fig. 43, item 2), before determining the interface positions between the dif-
ferent phases. As a result, interface positions calculated by LB 478 will never be
ambiguous or inconsistent.
1
2
3 Densities
Monotonized densities
Table
Fig. 43 Densities Overview