Yokogawa DO402 Dissolved Oxygen Analyzer - Manual (Page 31)

IM 12J05D02-01E
Installation and wiring 3-11
DO70G Wiring Diagram Example
DO402G DOX10
Detail-1
Detail-2
DO70G
Detail-1(DO402G)
Detail-2(DOX10)
Connections of the sensor cable and DO402G terminals
are shown in the following table.
Connections of the sensor cable and DOX10 terminals
are shown in the following table.
DO70G (Wiring color)
Red
Clear
Green/Yellow
Green
White
DO402G (Terminal No.)
18
17
14
12
11
DO70G (Wiring color)
BROWN
BLUE DOX10 (terminal No.)
+ BROWN
− BLUE
Fugire 3-13. Wiring optical sensor (DO70G)
3-9. Wiring polarographic sensors
Consult the owners manual for the color identification of the sensor cable and connect temperature com-
pensator, cathode and anode to terminals 11, 12, 17 and 18 in this sequence.
Connect the cable shield (when provided) to terminal 14.
Note:
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.
F0311.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 m A OUTPUT
14 22 21 18
SCREEN
99
SCREEN 2
23
Sensor Input
Temp.
Wiring polarographic sensor
mA Output
Contact
Input
Shield
Figure 3-14. Wiring polarographic sensor
3-10. Wiring RS485 signal
It is necessary to use screening/shielding on the output signal cables. Screw (M3) 99 is used to connect
the shielding.