Conductivity Sensor Module Connections; 2-Electrode Sensors - ABB AWT420 Operating Instruction

AW T4 2 0 | U N I V E R S A L 4 - W I R E , D U A L- I N P U T T R A N S M I T T E R | O I/A W T4 2 0 - E N R E V. B
Standard sensors without diagnostic functions
NOTICE
Ensure sensor diagnostics are Off when using standard
sensors without diagnostic functions.
Sensor type RTD wiring
2867 2-lead
TB5 2-lead
2-lead
AP1xx
3-lead
2-lead*
AP3xx
3-lead
APS1xx
2-lead*
APS5xx
3-lead
APS7xx
* Cut and remove grey wire
Standard sensors with diagnostic functions
NOTICE
Ensure sensor diagnostics are On when using standard
sensors with diagnostic functions.
Sensor type RTD wiring
TBX5 2-lead
2-lead*
AP2xx
3-lead
* Cut and remove grey wire

Conductivity sensor module connections

2-electrode sensors

Sensor type RTD wiring
2025, 2045
2-lead
2077, 2078
3-lead
2085, 2089
2085* 2-lead
TB2 2-lead
2-lead
AC2xx
3-lead
*2085 cable attached cells
4-electrode sensors
Sensor type RTD wiring
TB4 2-lead
SENSE GUARD
1 2
Clear –
Blue –
Clear –
Clear –
Blue –
Blue –
Blue –
Blue –
SENSE GUARD
1 2
Blue Yellow
Clear Red
Clear Red
DRIVE +
1 2
Red –
Red –
Red –
Green –
Green –
Green –
DRIVE + SENSE +
1 2
Green Red
REF S .GND
3 4
– Black
– Black
– Black
– Black
– Black
– Black
– Black
– Black
REF S .GND
3 4
Black Green
Blue Green/Yellow
Blue Green/Yellow
DRIVE –
3 4
– Black Green/Yellow Blue
– Black
– Blue
– Black
– Black
– Black
SENSE – DRIVE –
3 4
White Black
RTD 1 RTD 2
5 6
Red White
Red White
Red
White
Red
White Red
Red White
Red White
Red White
Red White
RTD 1 RTD 2
5 6
Red White Dark green
Red White
Red White
RTD 1 RTD 2
5 6
Brown
Brown Green/Yellow
Yellow Dark green
Blue Yellow
Blue/Red Yellow
Yellow Red
RTD 1 RTD 2
5 6
Blue Yellow Dark green
15
SHIELD RTD 3
7 8
– –
– –
– –
– Red
– –
– Grey
Yellow –
Yellow Grey
SHIELD RTD 3
7 8
–
– –
– Grey
SHIELD RTD 3
7 8
– –
– Blue
– –
Dark green –
Dark green –
Dark green Blue
SHIELD RTD 3
7 8
–