Fluid Components International GF90_GF92 - Manual (Page 17)

Doc. No. 06EN003229 Rev. H 13 GF Series Flowmeter Models GF90/GF92
FLUID COMPONENTS INTERNATIONAL LLC http://www.fluidcomponents.com
Install Flow
Element
ALERT: Do not overtighten the flow element. The RTD's can be damaged if the flow element is
forced into the far wall of the pipe or vessel.
Cable Glands and Conduit Fittings
All cable glands and conduit fittings, including conduit plugs, must meet or exceed the area
approval where unit is being installed.
NOTE: The instrument accuracy will be reduced if the media flow is reversed from the flow
direction of the flow arrow machined on the flow element or if the flats are not parallel,
within ±1° of the flow direction.
Select one of the following installation procedures which is applicable to the unit being installed.
GF90 Flange Mount
The flange mount flow element is shown in Figure 2. Attach the process mating flange with care. The
correct orientation of the flow element must be maintained to ensure the calibrated accuracy.
•
Verify that the process media flow is in the same direction as the arrow on the FLAT.
• Apply the appropriate gasket and/or sealant to flange mount as required.
• Mate flow element flange to process mount keeping flat oriented properly.
• Attach with bolt, two flat washers, lock washer and nut for each bolt hole, apply lubricant/sealant
to male threads and torque. Refer to ANISI B16.5 specifications.
GF90 NPT Pipe Thread Mount
ALERT: DO NOT change the orientation of the flow element in the enclosure as the
interconnecting RTD and heater wiring could be stressed and damaged. DO NOT apply
any torque to the flow element enclosure - only apply to NPT pipe surface itself.
NOTE: When mounting the flow element to the process pipe, it is important that a lubricant/
sealant is applied to the male threads of all connections. A lubricant/sealant compatible
with the process environment should be used. All connections should be tightened firmly.
To avoid leaks do not overtighten or cross-thread connections.
The pipe thread configuration is shown in Figure 3. Apply sealant compatible with the process media
to male threads. Carefully insert into process mount. Threads are right-handed. Tighten with an open-
end wrench on the hexagonal surface provided. Rotate until snug and continue to turn until flat is
horizontal to process flow.
Figure 3. Model GF90 Insertion NPT Flow Element