Installation Deltabar S FOUNDATION Fieldbus
14 Endress+Hauser
4.2 Installation conditions
4.2.1 Dimensions
For dimensions, please refer to the Technical Information for Deltabar S TI00382P,
"Mechanical construction" section.
4.3 Installation instructions
• Due to the orientation of the Deltabar S, there may be a shift in the measured value, i.e. when
the container is empty or partially full, the measured value does not display zero. You can
correct this zero point shift using the "Zero" key on the electronic insert or externally on the
device or via the onsite display. ä 27, Section 6.2.1 "Position of the operating elements",
ä 29, Section 6.2.3 "Function of the operating elements – onsite display connected" and
ä 37, Section 7.5 "Position adjustment"..
• For FMD77 and FMD78, please refer to Section 4.3.4 "Installation instructions for devices
with diaphragm seals (FMD78)", ä 16.
• General recommendations for routing the pressure piping can be found in DIN 19210
"Methods for measurement of fluid flow; differential piping for flow measurement devices" or
the corresponding national or international standards.
• Using a three-way or five-way valve manifold allows for easy commissioning, installation and
maintenance without interrupting the process.
• When routing the pressure piping outdoors, ensure that sufficient antifreeze protection is
used, e.g. by using pipe heat tracing.
• Install the pressure piping with a monotonic gradient of at least 10%.
• To ensure optimal readability of the onsite display, it is possible to rotate the housing up to
380°. ä 20, Section 4.3.9 "Rotating the housing".
• Endress+Hauser offers a mounting bracket for installing on pipes or walls.
ä 18, Section 4.3.7 "Wall and pipe-mounting (optional)".
4.3.1 Installation for flow measurement
Flow measurement in gases with PMD75
• Mount the Deltabar S above the measuring point so that the condensate can run off into the
process piping.
Flow measurement in steam with PMD75
• Mount the Deltabar S below the measuring point.
• Mount the condensate traps at the same level as the tapping points and at the same distance
to the Deltabar S.
• Prior to commissioning, fill the pressure piping to the level of the condensate traps.
Flow measurement in liquids with PMD75
• Mount the Deltabar S below the measuring point so that the pressure piping is always filled
with liquid and gas bubbles can run back into the process piping.
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