User's Manual

NORMAL OPERATION &NORMAL OPERATION &

NORMAL OPERATION &

MEASUREMENTMEASUREMENT

MEASUREMENT

Make sure that the controller has been properly calibrated before

commencing and that the pH and conductivity/TDS setpoints have

been adjusted (see following pages).

The pH electrode, conductivity/TDS probe and any ground probe

must be properly connected and wired to the controller (see preceding

pages).

The conductivity/TDS probe’s protective sleeve must not be removed

and the holes on the sleeve should be near the top (the cable end).

The probe must be immersed in the solution above the air-vent holes

on the external sleeve. The probe must be installed in such a way as

to minimize presence of air bubbles (see probe installation tips at the

end of the manual).

Remove the protective cap if it is still on the tip of the pH electrode

and ensure that the electrode is immersed in the solution (at least

4cm/1.5”). The electrode should be installed in such a away that it

permanently lies in the solution whether in a well, tank or on the

discharge pipe.

The controller provides for visual dosing status through two LED’s (see

3 and 11 - Functional Dia-

gram). The LED’s light up when

the controller is in the pH and/

or conductivity/TDS dosage

mode and the relays are acti-

vated.

The actual pH and conductivity or TDS values are displayed on the

two LCD’s in pH and mS/cm or ppm, respectively.

SET

FERT

SET

ACID

FEED

5.80

1.60