Installation
Deltabar S PROFIBUS PA
10
Hauser
4.2 General 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, the measured value does not display zero. You can correct this zero
point shift either via the "zero" key on the electronic insert, or on the outside of the device or
via the on-site display.
See Page 20, 4.2.1 "Position of operating elements", Page 21,
Section 4.2.2 "Function of the operating elements" or Page 30, Section 5.1 "Position
adjustment".
• For FMD77 and FMD78, please refer to Section 2.3 "Installation instructions for devices with
diaphragm seals", Page 12.
• The FMD77 must only be insulated up to a certain height.
• General recommendations for routing the impulse 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-valve or five-valve manifold allows for easy commissioning, installation and
maintenance without interrupting the process.
• When routing the impulse piping outdoors, ensure that sufficient anti-freeze protection is
used, e.g. by using pipe heat tracing.
• Install the impulse piping with a monotonic gradient of at least 10%.
• Do not clean or touch diaphragm seals with hard or pointed objects.
• To ensure optimal readability of the on-site display, it is possible to rotate the housing up to
380°.
• The on-site display can be rotated in 90° stages.
• Hauser offers a mounting bracket for installing on pipes or walls.
4.3 Measuring arrangement
4.3.1 Pressure measurement
• The PMD70, PMD75 and FMD78 are best suited for differential pressure measurement.
• Measuring arrangement for gases: Mount device above the measuring point.
• Measuring arrangement for liquids and steams: Mount device below tapping point.
• For differential pressure measurement in vapour, mount the condensate traps at the same
level as the same the tapping point and at the same distance from Deltabar S.
4.3.2 Level measurement
• All Deltabar S devices are best suited for level measurement in closed tanks.
• PMD70, PMD75, and FMD77 are suitable to level measurement in open tanks.
Measuring arrangement level measurement in closed tanks and closed tanks with
superimposed vapour
• PMD70, PMD75: Mount device below the lower measuring connection. Always connect the
negative side above the maximum level via an impulse piping.
• FMD77: Mount device direct on the tank. Always connect the negative side above the
maximum level via an impulse piping.
• FMD78 see Chap. 4.4 and Chap. 4.6.
