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Installation in a pipe
Type 8098 FLOWave L
7.4
Recommendations for the installation into the pipe
The device can be installed into either horizontal, oblique or vertical pipes. But an installation on a vertical
pipe is better to prevent air bubbles or gas bubbles to remain in the sensor measurement-tube.
In any case and according to the device variant, respect the following recommendations:
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Protect the device against electromagnetic interference, ultraviolet rays and, when installed outdoors, the
effects of climatic conditions.
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If the mass of the device could kink the pipe, install adapted pipe supports before mounting the device
in the pipe.
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Always install a heavy device with the help of another person and with the use of appropriate tools.
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If the liquid temperature is subject to variations, make sure that the device can expand freely.
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Make sure the DN of the measurement tube is suited to the flow velocity: refer to the data sheet of the
device, available at
.
The device is not intended to measure the flow rate of liquids if gas bubbles are present, whatever
the origin of the bubbles (air intake, cavitation, degassing…).
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Choose a location with enough free space to put the magnetic key on the symbol at the side of the
device.
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Install the device upstream a valve or any equipment that changes the pipe diameter or the pipe
direction.
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If you cannot install the device upstream a valve or any equipment that changes the pipe diameter or the
pipe direction, observe the straight downstream distances depending on the design of the pipes. Refer
to standard ISO 9104:1991 and Fig. 14. If these recommendations cannot be complied with, contact
Bürkert.
IF YOU CANNOT INSTALL THE DEVICE UPSTREAM A VALVE OR ANY EQUIPMENT THAT CHANGES
THE PIPE DIAMETER OR THE PIPE DIRECTION, THEN OBSERVE THE FOLLOWING DISTANCES
Flow direction
Control valve
2 x 90°
elbow joint, 3
dimensional
2 x 90° elbow
joint
90° elbow joint
or T-piece
40 x DN
1 x DN
40 x DN
1 x DN
60 x DN
1 x DN
50 x DN
1 x DN
Fig. 14:
Upstream and downstream straight distances for special pipe designs (example for a horizontal
installation)
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