Installation; Installation Conditions - Endress+Hauser Proline Prosonic Flow 91W Brief Operating Instructions

Proline Prosonic Flow 91W
2

Installation

2.1

Installation conditions

2.1.1 Dimensions
For the dimensions of the measuring device, see the associated Technical Information on the
CD-ROM.
Mounting location
Correct flow measurement is possible only if the pipe is full. Entrained air or gas forming in the
pipe can result in an increase in measuring errors. For this reason avoid the following mounting
locations in the pipe:
• Highest point of a pipeline. Risk of air accumulating.
• Directly upstream of a free pipe outlet in a vertical pipeline.
Fig. 1: Mounting location
Down pipes
Notwithstanding the above, the installation proposal below permits installation in an open down
pipe. Pipe restrictions or the use of an orifice plate with a smaller cross-section than the nominal
diameter prevent the pipe from running empty while measurement is in progress.
Orientation
Vertical
Recommended orientation with upward direction of flow (View A). With this orientation,
entrained solids will sink and gases will rise away from the sensor when the fluid is stagnant.
The piping can be completely drained and protected against solids buildup.
Endress+Hauser
Installation
A0001103
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