Deltabar S FOUNDATION Fieldbus Installation
Endress+Hauser 15
• When measuring in media with solid parts, such as dirty liquids, installing separators and
drain valves is useful for capturing and removing sediment.
4.3.2 Installation for level measurement
Level measurement in an open container with PMD75
• Mount the Deltabar S below the lower measuring connection so that the pressure piping is
always filled with liquid.
• The negative side is open to atmospheric pressure.
• When measuring in media with solid parts, such as dirty liquids, installing separators and
drain valves is useful for capturing and removing sediment.
Level measurement in an open container with FMD77
• Mount the Deltabar S directly on the container. ä 18, Section 4.3.5 "Seal for flange
mounting".
• The negative side is open to atmospheric pressure.
Level measurement in a closed container with PMD75
• 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.
• When measuring in media with solid parts, such as dirty liquids, installing separators and
drain valves is useful for capturing and removing sediment.
Level measurement in a closed container with FMD77
• Mount the Deltabar S directly on the container. ä 18, Section 4.3.5 "Seal for flange
mounting".
• Always connect the impulse piping of negative side above the maximum level.
• When measuring in media with solid parts, such as dirty liquids, installing separators and
drain valves is useful for capturing and removing sediment.
Level measurement in a closed container with FMD78
• Mount the Deltabar S below the lower diaphragm seal. ä 16, 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
• 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.
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