Fluid Components International RF83 Manual Installation User Manual
Page 4
FLUID COMPONENTS INTL
CHAPTER 2 - INSTALLATION
Model FR83 Flow Switch
2 - 4
Doc. No. 003147 Rev. B
Table 2-1. Interconnecting Cable Size (AWG)
Connection
Maximum Distance for AWG
10 ft.
(3m)
50 ft.
(15m)
100 ft.
(31m)
250 ft.
(76m)
500 ft.
152m)
1000 ft.
(305m)
AC Power
22
22
22
20
18
16
Relay (2A)
28
22
20
16
12
10
Relay (10A)
22
16
12
8
6
Not
Recommended
Flow Element Wires
for Remote Option*
24
24
24
22
22
18
*Requires a shielded cable which is connected to the control circuitry terminal
block.
Cable Connections
Caution:
In order to prevent circuit or component damage, remove the signal conditioner from the remote
enclosure (if present) prior to the pulling of conduit wire.
Note:
The installation of an AC line switch between the AC power source and the instrument is
recommended. This facilitates easy power disconnection and is an added safety feature.
Connect the cable wires per the applicable wiring diagram in Appendix A. Use the tag found on the instrument or
packing list to match the control circuit description with the modules that call out the wiring diagrams. The modules
are also found in Appendix A. The part of the tag description that denotes the control circuit is found between two
forward slashes (/......./) and starts with a circuit board name, e.g. /0018-...../. The code that follows corresponds to
the modules. The lack of a full code denotes that the control circuit has a standard configuration. Standard
configurations are denoted on the modules with the abbreviation STD.
The cable used to connect the flow element to the control circuit must be shielded. The shield drain wire is
terminated at the control circuit socket (terminal 7). The other end of the shield is left floating (no connection to the
terminal block). The standard cable provided has a shield and is 22 AWG wire.
Connect the relay outputs to the customer alarms. Also connect the power to the instrument power input. See
Appendix A for the appropriate connection information.