PART TWO - INSTALLATION
SECTION 3 - ELECTRICAL CONNECTIONS
PRO-series Model C3 Conductivity Transmitter
Rev. 0-201
24
☞
•
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 three-wire hookup that meets your application
requirements, and connect the transmitter accordingly.
+
1
2
3
4
5
6
7
-
Loop Resistance
(See nomograph)
Loop Power
14-30VDC
Jumper
Required
200
0
14
16
18
R
ESI
ST
AN
C
E
I
N
O
H
M
S
800
400
600
1000
1200
1400
DC VOLTAGE
20
22
24
26
28
30
50 Ohms/Volt
LOOP LOAD
FIGURE 2-7 Three-wire Hookup -- Load Sinking
RS-485 Serial
communications
Comms Return
"A" +
"B" -
+
1
2
3
4
5
6
7
-
Loop Resistance
(See nomograph)
Loop Power
16-30VDC
Jumper
Required
DC VOLTAGE
1000
R
E
SI
S
T
AN
C
E
IN
OH
M
S
400
0
200
600
800
1200
1400
16
18
20
22
LOOP LOAD
50 Ohms/Volt
26
24
28
30
FIGURE 2-8 Three-wire Hookup -- Load Sinking with RS-485 Serial Communication
