GE PanaFlow MV80, User Manual

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Chapter 2. Installation
10 PanaFlow™ MV80 & MV82 User’s Manual
2.1.2 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 in
Figure 4 below. In order to achieve accurate and repeatable performance install the flowmeter using the
recommended number of straight run pipe diameters upstream and downstream 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 direction if possible.
Figure 4: Recommended Pipe Length Requirements for Installation of Series MV80 & MV82
Flowmeter
A B
Example 1.
One 90° elbow before meter
Flowmeter
A B
Example 2.
Two 90° elbows before meter in one plane
C' C
Flow Conditioner
(if used)
Flowmeter
A B
Example 3.
Two 90° elbows before meter out of plane (if three
C' C
Flow Conditioner
(if used)
90° bends present, double recommended length)
Flowmeter
A B
Example 4.
Reduction before meter
Flowmeter
A B
Example 5.
Expansion before meter
C' C
Flow Conditioner
(if used)
C' C
Flow Conditioner
(if used)
Flowmeter
A B
Example 6.
Regulator or valve partially closed before meter
C' C
Flow Conditioner
(if used)
(If valve is always wide open, base length
requirements on fitting directly preceding it)
Example
1
2
3
4
5
6
A
10D
15D
25D
10D
20D
25D
No Flow
Conditioner
A
N/A
10D
10D
10D
10D
10D
With Flow Conditioner
C
N/A
5D
5D
5D
5D
5D
C'
N/A
5D
5D
5D
5D
5D
No Flow
Conditioner
With Flow
Conditioner
Minimum Required
Downstream Diameters
Minimum Required
Upstream Diameters
D = Internal diameter of channel. N/A = Not applicable.
B
5D
5D
10D
5D
5D
10D
B
5D
5D
5D
5D
5D
5D