Fluid Components International GF90_GF92 - Manual (Page 20)

FLUID COMPONENTS INTERNATIONAL LLC http://www.fluidcomponents.com
GF Series Flowmeter Models GF90/GF92 16 Doc. No. 06EN003229 Rev. H
CAUTION: Ensure that all power is off before wiring any circuit.
ALERT: In applications where the flow element is located in an explosive environment, isolate
the conduit before it leaves the environment. A potting Y may be used to provide the
isolation.
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: FCI recommends installing an input power disconnect switch and fuse near the flow
transmitter to interrupt power during installation, maintenance, calibration, and
troubleshooting procedures.
Make all electrical connections through the 3/4 inch NPT ports in the enclosure. Run all electrical
cables through appropriate conduit or protective sheathing.
Minimum Wire Size
If the instrument is used in a remote configuration, a shielded, 8 conductor cable is to be used between
the local and remote enclosures. Table 1 shows the smallest (maximum AWG number) copper wire
that should be used in the cable and in other wiring. Use a lower gauge of wire (larger diameter) for
less of a voltage drop. Contact FCI concerning greater distances than those listed in the table. The
sensing element cable for the remote option must be shielded. The maximum wire size of the non-
power connectors in the instrument is 16 AWG (1.47 mm). The maximum wire size of the power
connectors in the instrument is 12 AWG (2.36 mm). Table 2 shows the AWG to millimeter
conversions.
Table 1. Maximum AWG Number
Install Flow
Transmitter
Remote Hardware Location (GF90 and GF92)
The outline dimensions shown in Appendix A show the physical dimensions for the proper mounting
of the flow element and transmitter electronics enclosure. Select a location for the flow transmitter
within 1000 feet (310 M) of the flow element. Pigtail flow elements can not be located more than
10 feet (3 M) from the flow transmitter. This location should be easily accessible with enough room to
unscrew the enclosure top at any time. Secure the enclosure to a surface capable of providing support.
Use appropriate hardware to secure the enclosure.
* Requires a an 8 conductor shielded cable. The shield is connected to the GND pin of JP3 of the
flow transmitter. The other end of the shield is left floating (no connection to the terminal block).
10 FT.
(3M)
50 FT.
(15 M) 100 FT.
(31 M) 250 FT.
(76 M) 500 FT.
(152 M) 1000 FT.
(305 M)
Power 22 22 22 20 18 16
Relay (2A at
220 VAC)
24 22 20 16 12 N/R
Relay (10A at 120
VAC or 24 VDC)
22 16 12
Flow Element
W ires*
24 24 24 22 22 18
Conne ction
Ma xim um Dista nce for AW G
Not Recommended