Mechanical Installation - OTT Flo-Dar Manual Del Usuario

Installation
D A N G E R
Explosion hazard. Trained personnel only must install or commission
the equipment.

Mechanical installation

Site location guidelines
For the best accuracy, install the sensor where the flow is not turbulent.
The ideal location is in a long, straight channel or pipe. Outfalls, vertical
drops, baffles, curves or junctions cause the velocity profile to become
distorted.
Where there are outfalls, vertical drops, baffles, curves or junctions,
install the sensor upstream or downstream as shown in
Figure 4–Figure 6. For upstream locations, install the sensor at a
distance that is at least five times the pipe diameter or the maximum fluid
level. For downstream locations, install the sensor at a distance that is at
least ten times the pipe diameter or the maximum fluid level.
If the location contains a junction and the flow in one pipe is much
higher, install the sensor on the wall near the lower flow pipe.
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Figure 4 Sensor location near an outfall, vertical drop or baffle
1 Acceptable upstream sensor
location
2 Outfall
3 Distance upstream: 5 × maximum
level
4 Acceptable downstream sensor
location
5 Distance downstream: 10 × pipe
diameter
6 Vertical drop
7 Baffle
English 9