
Transmitter Multiparameter M400 29
© 11 / 08 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter Multiparameter M400
Printed in Switzerland 52 121 378
4.6 Connection of Optical Dissolved Oxygen
4.6.1 Connecting the Optical Sensor to a Cable
C
NOTE: Connect the Sensor and screw the plug head clockwise (hand tight).
4.6.2 Optical DO Sensor Cable Assignment using TB4
gray
black
brown
yellow
black
blue
1
2
3
4
5
6
7
8
9
1 – 24 VDL
2 – GND 24 VDL
3 – not used
4 – GND (5 VDL)
5 – not used
6 – not used
7 – RS 485–
8 – RS 485+
9 – not used
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