YOKOGAWA EXA DO402G, User Manual, Page: 39 / 95

<3. Installation and Wiring>
3-16
IM 12J05D02-01E
3.9 Wiring polarographic sensors
Consult the owners manual for the color identification of the sensor cable and connect
temperature compensator, cathode and anode to terminals 11, 12, 17 and 18 in this sequence.
Connect the cable shield (when provided) to terminal 14.
CAUTION
A jumper cable is placed to connect converter terminals 13 and 17.
When a polarographic sensor is to be connected, the cable is not used, so disconnect it.
It is recommended to save the jumper cable for future use—if may be needed when a galvanic
sensor is used.
F0314.ai
Digital
Communications
12 13
15 16
63 66 65 62 61 95 94 93 92 91
SCREEN
mA2
mA1
SCREEN
TL TL
17 11
CONT mA OUTPUT
14 22 21
18
SCREEN
99
SCREEN 2
23
Sensor Input
Temp.
Wiring polarographic sensor
mA Output
Contact
Input
Shield
Figure 3.15 Wiring polarographic sensor
Connect any of the following temperature compensators: PT100, PT1000, PB36, 22kNTC
Connect only to the cathode and anode of galvanic sensors.
Do not connect to other devices.
3.10 Wiring RS-485 signal
It is necessary to use screening/shielding on the output signal cables. Screw (M3) 99 is used to
connect the shielding.
9th Edition: Aug. 05, 2015-00