3. Checking the polarity
Procedure: Connect the positive probe of the instrument with the anode
and the negative one with the tank.
Nominal value: Drive potential >/= + 1,9 V = (plus!). The sign indicated by
the instrument must be positive (plus).
Deviations from nominal value: When the value is negative (e.g.: -2.5 V),
the polarity is incorrect. Risk of increased tank corrosion. Switch off the
CORREX
®
MP 1.9-900 system immediately and contact the storage tank
after-sales service.
4. Checking the insulation of the titanium anode
Procedure: Set the measuring instrument to the resistance range. Drain off
the water to prevent indirect electrical contact via the water. Connect the
probe leads of the instrument with the titanium anode and the stainless
steel tank. Measure the electrical resistance.
Nominal value: High resistance; value in the kilohm and partly also in the
megohm range.
Deviations from nominal value: resistance close to 0
a short-circuited titanium anode.
Operating Instructions CORREX
®
MP 1.9-900
can be expected for
35