Fox Thermal FT3 - Page 35

3x 3/4 inch NPT Female
F1 F2
F3 F4
Signal Wiring,
Serial Communication
Remote Sensor Wiring (option)
Input
Power
Flow Meter Probe
Modbus Serial Communication Wiring
A shielded 22 to 18 gauge three conductor cable is recommended for Modbus communication wiring.
Two of the wires in the cable should be twisted pair and used for the communication transmit and
receive signals. The third wire is for the communication common signal. Belden number 310A or a
similar type of cable is recommended, depending on the environment or temperature requirements of
the application.
Remote Sensor Wiring
NOTE! Remote wiring is only required when the Remote Electronics option is provided.
NOTE! Serial Numbers: If you have more than one meter, you must ensure that the serial
numbers of the probe/remote enclosure, electronics enclosure, and ow body match one
another. These items have been manufactured and claibrated to operate as a unit and connot
be mismatched.
For remote sensor wiring, ve wire shielded cable is required, the recommended wire gauge is 18
AWG. Use Belden number 5306FE or similar type of cable, depending on environment or temperature
requirements of the application. Make sure that the cable length does not exceed 100 feet and the
wire resistance does not exceed one ohm. Connect the cable shield at the remote enclosure end. Do
not connect the shield at the electronics enclosure.
FT3 Wiring - Conduit Openings
Installation Wiring
Obtain the correct length for the FT3 power and signal wires using one of these methods:
• Trim the wires to extend 2.5 inches out of the enclosure after the conduit and wires are routed to
the FT3 (preferred method).
• Trim the wires to extend 6 inches from the end of the conduit before it is attached to the FT3.
Fig. 3.2: FT3 Wiring - Conduit Openings
Wiring | 35
Model FT3
Wiring