Installation
Deltabar S FMD77, FMD78, PMD75 with FOUNDATION Fieldbus
18
Hauser
Level measurement in a closed container with FMD78
P01-FMD78xxx-11-xx-xx-xx-000
Fig. 13:
Measuring arrangement for level measurement in a closed container with FMD78
1
Deltabar S, here FMD78
• Mount the Deltabar S below the lower diaphragm seal.
21, Section 4.3.4 "Installation
instructions for devices with diaphragm seals (FMD78)".
• The ambient temperature should be the same for both capillaries.
Level measurement is only ensured between the upper edge of the lower diaphragm seal and
the lower edge of the upper diaphragm seal.
Level measurement in a closed container with superimposed steam with PMD75
P01-PMD75xxx-11-xx-xx-xx-005
Fig. 14:
Measuring arrangement for level measurement in a container with superimposed steam with PMD75
1
Condensate trap
2
Shutoff valves
3
Deltabar S, here PMD75
4
Separator
5
Drain valves
6
Three-way valve manifold
• Mount the Deltabar S below the lower measuring connection so that the pressure piping
is always filled with liquid.
• Always connect the impulse piping of negative side above the maximum level.
• A condensate trap ensures constant pressure on the negative side.
• When measuring in media with solid parts, such as dirty liquids, installing separators and
drain valves is useful for capturing and removing sediment.
+
–
➀
min.
max.
+
–
➂
➀
➁
➃
➄
➅
➃
➄
min.
max.
➁
Содержание Deltabar S FMD77
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