Fluid Components International GF90_GF92 - Manual (Page 18)

FLUID COMPONENTS INTERNATIONAL LLC http://www.fluidcomponents.com
GF Series Flowmeter Models GF90/GF92 14 Doc. No. 06EN003229 Rev. H
GF90 Adjustable / Retractable Flow Element Assembly
Applications involving the use of a packing gland (low, medium or high pressure) should refer to
the drawings located in Appendix A for additional detail.
•
NPT and flange packing gland mounts are available. The valve assembly with appropriate
connections are customer supplied. Follow the pipe thread procedure or the flange procedure
as shown on the previous page.
• Then tighten packing nut until internal packing is tight enough so that the friction fit on the
shaft is adequate to prevent leakage but not prevent the shaft from sliding. Position the flat
horizontal with arrow in direction of process flow.
• Proceed to insert the flow element into process media line. For the medium pressure packing
gland use the adjusting nuts on the all-thread to pull the flow element into proper
predetermined depth position.
• Tighten the opposing lock nuts on the all-threads. Tighten the packing nut another 1/2 to
1 turn until tight (approximately 65 to 85 ft-lbs torque).
• Rotate split ring locking collar to line up with connecting strap welded to packing nut.
Tighten the two 1/4-28 hex socket cap screws on the split ring locking collar. Open valve -
check for process media leakage.
• Reverse these steps for removal.
GF90 2 Inch (50 mm) Pipe Mount (Inside Diameter)
Use a tee-pipe configuration for applications where the inside diameter of the process pipe is
2 inches (50 mm). See Figure 4 for an illustration. The flow element active area is approximately
1 inch (25.4 mm) long, (the inactive area is also approximately 1 inch long), so it is impractical to
place the flow element in a line of less than 2 inches (50 mm) inside diameter without loss of
accuracy and reliability. Install the flow element per connection procedure for pipe thread, flange,
or packing gland assembly as applicable.
Figure 4. 2 Inch (51 mm) Pipe Mount
GF90/GF92 Pigtail
Insert the instrument into the process and connect the flow element per the wiring diagram in
Figure 50. Be sure to the correct diagram for either the cable or wire configuration.