Ecolab Versatronic Manuel D'utilisation page 333

Balanced connection
(when using a double-shielded connection cable in conjunction with a separate earthing
pin in the liquid)
Slot Option/Connection option
IN 7 pH/ORP (redox)
IN 8 balanced connection
IN 9 The balanced connection serves to reduce interference by scattering electromagnetic fields
IN 10 along the sensor cable.
A separate temperature sensor can be connected to a temperature input or a universal input
for temperature compensation.
1 = glass/metal electrode (core) (A)
2 = not occupied
4 = reference electrode (inner shield) (B)
5 = liquid potential (earthing pin) (C)
6 = shield (outer shielding) (D)
Fig. 17: Terminal connection diagram pH/ORP (redox) measurement, balanced connection
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Electrical connection
417102269 Rev. 2-08.2020