Onicon F-2600 Uživatelský manuál stáhnout pdf (Strana 31)

11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax (727) 442-5699 • [email protected]

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 ow 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 anged) 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 ange 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 ow 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.

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 130 131

Žádné komentáře

Onicon F-2600 Uživatelský manuál Strana 31