Installing Flowmeters With A Packing Gland Connection (No Insertion Tool) - GE PanaFlow MV80 User Manual

Chapter 2. Installation

2.3.6 Installing Flowmeters with a Packing Gland Connection (No Insertion Tool)

Use the formula in Figure 16 below to determine the insertion depth for meters with a packing gland connection (NPT
and flanged) without an insertion tool.
I
S
F
Flow
Figure 16: Insertion Calculation for Meters Without an Insertion Tool)
Example:
To install a Series MV82 Flowmeter with a standard probe (S = 29.47) into a 14 inch schedule 40 pipe, the following
measurements are taken:
•
F = 3 inches
•
R = 5 inches
•
t = 0.438 inches
For this example, the calculated insertion length is 21.03 inches.
28
Where:
I = Insertion length.
S = Stem length - the distance from the center of the sensor head
to the base of the enclosure adapter (S = 41.47 inches for
12 inch extended probes).
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 diameter ÷ 2 for pipes ten inches and smaller.
t
R = Five inches for pipe diameters larger than ten inches.
R
t = Thickness of the pipe wall. (Measure the disk cut-out from the
tapping procedure or check a piping handbook for thickness.)
Insertion Length Formula
I = S – F – R – t
PanaFlow™ MV80 & MV82 User's Manual