Installing/connecting
SITRANS FPS200
12
Operating Instructions, 08/2019, A5E46744245-AB
Verify before assembling if the necessary upstream and downstream conditions are respected and verify the
required mounting position (see 4.2.1 In- and outlet routes).
Loose shut off valves (if delivered) have to be mounted on the pressure tapping nozzles of the primary element or
for steam applications on the condensate vessels.
All differential pressure lines must be placed with a sufficient drop/incline to the process from the differential
pressure transmitter. (See 4.6 Installation positioning and piping).
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With steam and liquids, a pressure release has to be provided at the highest point.
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With gas, drainage has to be provided at the lowest point.
When connecting the differential pressure circuits between first cutoff of the flow meter and the valve manifold of
the transmitter, the correct allocation of the pins (+) respectively (-) must be respected.
If devices have not been subjected to a pressure test in the factory, measuring flanges, covers with pre-welding
flanges and measuring sections with flange-connected blinds are usually only delivered pre-installed. The screws
and bolts must be finally tightened with the corresponding correct tightening torques.
Observe that the primary elements must be transported with appropriate lifting gear to avoid any damages (see 4.3
Transport to measuring point).
5.2
Positioning of the device
5.2.1
In- and outlet routes
To warrant an even flow profile, the primary element must be applied at a sufficient distance from the pipe bends
or pipe bottlenecks. The required supply routes for different installation interferences can be taken from ISO 5167.
The requirements from ISO 5167 to the pipes must be met (weld seams, roughness, etc.).
5.2.2
Homogeneity
The medium must be a homogeneous fluid. There must not be any change of the physical condition
(liquid/gas/steam) and the process line and differential pressure lines must always be filled completely.
5.3
Transport to measuring point
Observe that the primary elements must be transported with appropriate lifting gear to avoid any damage. At
transportation, pressure tapping nozzles and fittings may not be subject to heavy loads. Any damage during