Proline Prosonic Flow 91 Installation
Endress+Hauser 11
3.2 Installation conditions
3.2.1 Installation dimensions
The dimensions and lengths of the sensor and transmitter can be found in the "Technical
Information" document for the device in question. This can be downloaded as a PDF file from
www.endress.com. A list of the "Technical Information" documents available is provided in Section
"Documentation" on → ä 66.
3.2.2 Mounting location
Correct measuring is possible only if the pipe is full. Avoid the following mounting locations:
• Do not install at the highest point in the run. Risk of air accumulating!
• Do not install directly upstream from an open pipe outlet in a down pipe.
a0001103
Fig. 4: 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.
a0001104
Fig. 5: Installation in a down pipe
1 = Supply tank, 2 = Measuring sensors, 3 = Orifice plate, pipe restriction, 4 = Valve, 5 = Filling tank
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2
3
4
5
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