![Armstrong AVF Скачать руководство пользователя страница 15](http://html1.mh-extra.com/html/armstrong/avf/avf_installation-and-operation-manual_2974226015.webp)
Designs, materials, weights and performance ratings are approximate and subject to change without notice. Visit
armstrong
international.com for up-to-date information.
15
Installation Overview – continued
Unobstructed Flow Requirements
Select an installation site that will minimize possible distortion in the flow profile. Valves, elbows, control valves and
other piping compo-nents may cause flow disturbances. Check your specific piping con-dition against the examples
shown below. In order to achieve accurate and repeatable performance install the flow meter using the recom-mended
number of straight run pipe diameters upstream and down-stream of the sensor. Note: For liquid applications in vertical
pipes, avoid installing with flow in the downward direction because the pipe may not be full at all points. Choose to
install the meter with flow in the upward direc-tion if possible.
Minimum Required
Upstream Diameters
Minimum Required
Downstream Diameters
No Flow Conditioner
With Flow Conditioner
No Flow
Conditioner
With Flow
Conditioner
Example
A
A
C
C
B
B
1
10 D
N/A
N/A
N/A
5 D
5 D
2
15 D
10 D
5 D
5 D
5 D
5 D
3
30 D
10 D
5 D
5 D
10 D
5 D
4
10 D
10 D
5 D
5 D
5 D
5 D
5
20 D
10 D
5 D
5 D
5 D
5 D
6
0 D
10 D
5 D
5 D
10 D
5 D
D = Internal diameter of channel. N/A = Not applicable
Figure 2-1. Recommended Pipe Length Requirements for Installation, Series AVF/AVI