ProMinent DULCOTEST CGE 2-4P-10 ppm, Operating Instructions Manual, Page: 27 / 68

Pr o Minent
® 27
Operation
7 Operation
The probe can be calibrated after a run-in period. We recommend that you
repeat the calibration 24 hours later.
CAUTION
Do not switch off during interval operation of the measuring
system!
After any operation without chlorine, running-in periods are
to be reckoned with. If required, switch on metering unit
time-delayed!
If no chlorine is metered for a longer period, the sensor must
be disconnected from the power supply and stored in a dry
place.
7.1 Run-in period
The probe needs to be run in so that a stable reading can be obtained.
First commissioning: 24 hour run-in period recommended
Recommissioning: approx. 12-24 hours
7.2 Calibration
IMPORTANT
• If installing the sensor abroad, please comply with the
local regulations for calibration periods.
• Carry out a slope test every time the membrane is
changed.
Requirements • The flow in the in-line probe housing must correspond with the ”Technical
data” in chapter 15.
• pH value within the permitted range
• The sample medium and the probe should be at the same temperature.
Zero point
calibration
Not necessary
Slope test
왘
Determine the chlorine content according to the DPD-1 method using an
appropriate instrument for measuring chlorine.
왘
Set the controller/measuring device to the value obtained in accordance
with the operating instructions.
왘
Repeat calibration at regular intervals.
BA_DT_085_09_07_4spr.p65 13.09.2007, 14:18 Uhr 27