Chapter 2 Installation
FastFlo™ 620S Instruction Manual
2-2
IM-62S
Unobstructed Flow Requirements
Select an installation site that will minimize possible distortion in the flow
profile. Valves, elbows, control valves and other piping components may
cause flow disturbances. Check your specific piping condition against
the examples shown below. In order to achieve accurate and repeatable
performance install the flow meter using the recommended number of
straight run pipe diameters upstream and downstream of the sensor.
Example
A – Upstream
(
1
)
Requirements
B – Downstream
(2)
Requirements
1
15 D
5 D
2
20 D
5 D
3
40 D
10 D
4
15 D
5 D
5
30 D
10 D
6
40 D
5 D
(1)
Number of diameters (D) of straight pipe required between upstream disturbance and the flow meter.
(2)
Number of diameters (D) of straight pipe required downstream of the flow meter.
Figure 2-1. Recommended Pipe Length Requirements for Installation
