Installing/connecting
SITRANS FPS200
Operating Instructions, 08/2019, A5E46744245-AB
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transportation must be avoided. In particular, pressure tapping nozzles, fittings, flange finish and painting have to
be protected against scratching or other damage.
5.4
Size/Dimensions
Observe the dimension drawings of the primary elements. The serial number-specific dimension drawing can be
found in
5.5
Installation notes
5.5.1
Installation of primary element for flange connection (sandwich or with end flanges)
Observe alignment of the primary elements, the inflow side is marked usually on the fitting ring by "+".
5.5.1.1
Primary element with end flanges
The installation of the primary element between flanges has to be done with two seals which are adapted to
pressure, temperature and media. These seals are not part of delivery. The seals must not protrude into the pipe.
At horizontal assembly, the lower flange screws are installed loosely first, then the seal is inserted from above. The
last screws can be mounted and lightly tightened. Center the primary element. Finally, tighten the screw bolts.
Torques are determined by the type of screws and the seal. Information on this is available from the seal or screw
manufacturer.
5.5.1.2
Primary elements in sandwich-build
The installation of the primary element between flanges has to be done with two seals which are adapted to
pressure, temperature and media. These seals are not part of delivery. Neither seals nor fitting ring must not
protrude into the pipe. Therefore, the inner diameter of the fitting rings is designed a little larger for sandwich
versions according to DIN 19205. Fitting rings with even sealing surface are centered by the flange screws.
At horizontal assembly, the lower flange screws are installed loosely first, then the fitting ring and seals are inserted
from above. The remaining screws are installed and slightly tightened. Place the fitting ring centrally (may be
measured from the outer flange diameter). Finally, tighten the screw bolts considering the appropriate torque.
Information on this is available from the seal or screw manufacturer.
5.5.2
Measuring sections
The primary element has to be adjusted that the inlet marked with “+” points in direction of the inflow. The inlet is
longer than the outlet. The following assembling corresponds to the procedure of primary elements with end flanges.
5.5.3
Plug-in orifices