<6. Wiring>
6-4
IM 01C25C01-01E
(3) 1 to 5 V output
Either three or four wire system is used.
Power supply line and 1 to 5 V signal line commonly
use the SUPPLY - terminal.
NOTE
With three wire connection, the cable length
may affect the measurement accuracy of the
output signal. In either three-wire or four-wire
connection, recommended wiring distance is
200 m or less, and the use of shielded cable is
recommended.
■ Three wire connection
For three wire system, a negative wiring shall
be commonly used for power supply and signal
line.
Hazardous Location
Nonhazardous Location
Transmitter terminal box
Distributor
(Power supply unit)
Receiver
instrument
F0617.ai
Figure 6.11 Connection between Transmitter,
Distributer and Receiver
■ Four wire connection
Fasten the negative side wiring of both power
supply and signal line to the SUPPLY - terminal.
Hazardous Location
Nonhazardous Location
Transmitter terminal box
Distributor
(Power supply unit)
Receiver
instrument
F0618.ai
Figure 6.12 Connection between Transmitter,
Distributer and Receiver
6.4.2 Wiring Installation
(1) General-use Type and Intrinsically Safe
Type
With the cable wiring, use a metallic conduit or
waterproof glands.
• Apply a non-hardening sealant to the terminal
box connection port and to the threads on the
flexible metal conduit for waterproofing.
F0608.ai
Flexible metal conduit
Wiring metal
conduit
Tee
Drain plug
Apply a non-hardening
sealant to the threads for
waterproofing.
Figure 6.13 Typical Wiring Using Flexible Metal
Conduit
