GE PanaFlow MV80, Руководство пользователя

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Chapter 2. Installation
20 PanaFlow™ MV80 & MV82 User’s Manual
2.3.2 Installing Flowmeters with a Compression Connection
Refer to Figure 11 below, and use the formula shown to determine insertion length for flowmeters (NPT and flanged)
with a compression process connection.
Figure 11: Insertion Calculation (Compression Type)
I
F
t
R
S
I
F
t
R
S
Flow Flow
Insertion Length Formula
I = S – F – R – t
Where:
I = Insertion Length.
S = Stem length - the distance from the center of the sensor head to the base of the enclosure adapter
(S = 29.47" for standard probes; S = 13.1" for compact; S = 41.47" for 12-inch extended).
F = Distance from the raised face of the flange or top of NPT stem housing to the outside of the pipe wall.
R = Pipe inside di 2 for pipes ten inches and smaller.
R = Five inches for pipe diameters larger than ten inches
t = Thickness of the pipe wall. (Measure the disk cut-out from the tapping procedure or check a piping
handbook for thickness.)