Fluid Components International GF03 - Manual (Page 12)

FLUID COMPONENTS INTERNATIONAL LLC http://www.fluidcomponents.com
Model GF03 Flow Meter 8 Doc. No. 06EN003352 Rev. B
Warning: Installation of an FCI instrument should only be performed by properly trained
personnel in accordance with the current edition of the National Electrical
Code. Ensure that all power is off. Any instances where power should be
applied to the instrument will be noted in this manual. Where the instructions
call for the use of electrical current, the operator assumes all responsibility for
conformance to safety standards and practices.
Caution: 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.
Remote Hardware
See Appendix A for the remote enclosure along with the physical dimensions so the flow
transmitter can be properly mounted.
Note: The factory recommends removal of the transmitter while pulling the necessary
cables; this will prevent damaging the circuit boards or their components. To
remove the transmitter unbolt the four outermost screws on the transmitter
mounting plate.
Power Connection Information
Conduit Routing
All electrical connections are to be made through the female NPT openings in the flow
transmitter's enclosure. FCI strongly recommends that all electrical cables be run through an
appropriate conduit for the protection of the instrument and personnel. Refer to the
appropriate wiring diagram.
Protection of the electronics from moisture is an important consideration. Keep the entry of
the conduit into the enclosures in the downward direction so condensed moisture that collects
in the conduit will not drain into the enclosure. In addition, FCI recommends sealing off the
conduit with a potting Y or other sealing method to prevent moisture from entering the
enclosure.
Minimum Wire Size
Table 1 shows the smallest (maximum AWG number) copper wire which should be used
in the electrical cables. Use a lower gauge of wire for less of a voltage drop. Contact FCI
concerning greater distances than those listed in the chart.
Install
Transmitter
* Requires two 8 conductor shielded cables. 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).
Maximum Distance for AWG
Connection
10 ft.
(3 m) 50 ft.
(15 m)
100 ft.
(31 m)
250 ft.
(76 m)
500 ft.
(152 m)
1000 ft.
(305 m)
AC Power 22 22 22 20 18 16
Relay
(2A at 220 VAC)
24 22 20 16 12
Not
Recommended
Relay
(10A at 120VAC or 24
VDC)
22 16 12 Not Recommended
Flow Element Wires for
Remote Option *
24 24 24 22 22 18
Pressure Transducer 24 24 24 22 22 18
Table 1 - Interconnecting Wire Size