Type S030

14 | 22

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6.

Product installation

6.1. Installation notes

Flow measurement

Note:

The device is not suitable for use in gaseous media and steam.

Minimum straight distances upstream and downstream of the sensor must be observed. These stabilizing distances depend on the pipe’s

design. Increasing these distances or installing a flow conditioner may be necessary to obtain the best accuracy. For more information, refer

to EN ISO 5167-1.

EN ISO 5167-1 specifies the straight inlet and outlet distances that must be complied with when installing fittings in pipe lines in order to

achieve calm flow conditions. The most commonly used elements that could lead to turbulence in the flow are shown below. The related

minimum inlet and outlet distances that ensure a calm flow are also specified.

Make sure that the measuring conditions at the point of measurement are calm and problem-free.

50 x DN 5 x DN

40 x DN 5 x DN

25 x DN 5 x DN

20 x DN 5 x DN

18 x DN 5 x DN

15 x DN 5 x DN

Regulating valve1.)

2 x 90° elbow joint

3 dimensional

90° elbow joint

or T-piece

Expansion2.)

Reduction

2 x 90° elbow joint

Fluid direction 

DN = Orifice

1.) If the valve cannot be mounted after the measuring device, the minimal distances have to be respected.

2.) If an expansion cannot be avoided, the minimal distances have to be respected.

Please note minimum flow velocity

The complete measuring device can be installed in either horizontal or vertical pipes, but following additional conditions should be

respected:

• The pipe always has to be filled with fluid at all times near the device.

• The pipe design must be such that no air bubbles or cavitation can form within the medium near the device at any time.

Correct

Incorrect

Correct

Correct

Incorrect

Incorrect

Correct

Incorrect

Pressure and temperature ratings must be respected according to the selected fitting material. The suitable pipe size is selected using the

diagram in the chapter “Nominal size selection” of the fitting, see chapter “6.2. Selection of the nominal diameter” on page 15.