PART TWO - INSTALLATION
SECTION 3 - ELECTRICAL CONNECTIONS
Rev. 0-201
PRO-series Model C3 Conductivity Transmitter
27
3.5 Monitor Mode
Hookups (without
current loop)
☞
In a monitor mode hookup (without current loop), the trans-
mitter can be wired two ways depending on whether or not
RS-485 serial communication is used. At least 12 VDC is
required for operation (16 VDC with serial communication).
Depending on how the transmitter is mounted, route the DC
power and RS-485 serial communication wiring into the
transmitter as follows:
•
Wall/Pipe-mounted Transmitter: Route cable through
right side cable entry knockout hole in the back cover.
•
Panel-mounted Transmitter: Route cable behind panel to
the exposed TB1 terminal strip.
•
Integral Sensor-mounted Transmitter: Route cable through
right side cable entry knockout hole in the back cover. (Do
not open left side cable entry knockout hole in cover.)
Wiring Tip!
Use high quality, shielded instrumentation cable.
Refer to the monitor mode hookup that meets your applica-
tion requirements, and connect the transmitter accordingly.
+
1
2
3
4
5
6
7
-
External Power
12-30VDC
FIGURE 2-13
Monitor Mode Hookup (without Current Loop) -- without RS-485 Serial Communication
+
1
2
3
4
5
6
7
-
External Power
16-30VDC
Comms Return
RS-485 Serial
communication
"B" -
"A" +
FIGURE 2-14
Monitor Mode Hookup (without Current Loop) -- with RS-485 Serial Communication
