Hach 3700 Series, Basic User Manual, Page: 16 / 148

Table 2 Sensor wiring information
Terminal Wire Signal Terminal Wire Signal
1 Green Inner electrode 7 — —
2 Yellow Signal ground/ Temperature 8 — —
3 — — 9 Clear Shield
4 Black Shield 10 Red Temperature
5 — — 11 White Outer electrode/ Receive high
6 — — 12 Blue Receive low
PRO-series Model E3 electrodeless conductivity transmitter
To connect the sensor to a PRO-series Model E3 electrodeless conductivity transmitter, remove
power to the transmitter and refer to
Figure 9 and Table 3 .
Figure 9 Connect the sensor to the transmitter
Table 3 Sensor wiring information
Terminal (TB2) Wire Terminal (TB2) Wire
1 White 4 Red
2 Blue 5 Yellow
3 Clear (inner shield)
9
6 —
3 Black (outer shield)
9
7 Green
Model E33 electrodeless conductivity analyzer
D A N G E R
Electrocution hazard. Always remove power to the instrument before making electrical connections.
9
For the best immunity to electrical noise, connect the inner shield wire and the outer shield wire
together with solder before they are put in the terminal block.
16 English