ONICON F-2600 - Manual (Page 31)

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F-2600 & F-2700 Vortex Flow Meter Manual 02/15 - 0808-7 / 19204 Page 31
7. Tighten the packing gland nuts to stop leakage around the stem. Do not torque over 20 ft-lbs.
8. Slide the stem clamp back into position. Torque stem clamp bolts to 15 ft-lbs. Replace the stem
clamp nuts and torque to 10-15 ft-lbs.
9. To separate the insertion tool from the flow meter, remove four socket head cap bolts securing
the upper and lower retractor brackets. Remove the insertion tool.
2.4.4 Installation of Meters with Packing Gland Connection (No Insertion Tool)*
Use the following formula to determine insertion depth for meters with a packing gland
connection (NPT and flanged) without an insertion tool.
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 = 41.47" for 12" 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 10" & smaller.
R = 5" for pipe diameters larger than 10".
t = Thickness of the pipe wall. (Measure the disk cutout
from the tapping procedure or check a piping
handbook for thickness.)
Figure 13. Insertion Calculation (Meters without Insertion Tool)
Example:
To install an insertion style flow meter with a standard probe (S = 29.47) into a 14"
schedule 40 pipe, the following measurements are taken:
F = 3"
R = 5"
t = 0.438"
The example insertion length is 21.03".
*All dimensions are in inches.