ProMinent DULCOTEST CLB1-mA-10ppm Guide De Montage Et De Service page 42

Commissioning
6 Commissioning
CAUTION!
– The sensor may not be operated in
water or solutions contained tensides!
– Do not switch off the measuring
system during intermittent operation!
– A run-in time will be necessary fol‐
lowing operation without chlorine.
Switch on metering equipment with a
time delay if necessary!
– If no chlorine is metered for a long
period of time, then the sensor has to
be disconnected from the mains
power supply and stored in a dry
place.
Run-in time
The sensor requires a specific run-in time to
show a steady displayed value.
Initial commissioning:
Recommissioning:
Membrane / electro‐
lyte replacement:
42
1 - 3 h
0.5 - 2 h
approx. 0.5 h
6.1 Calibration
CAUTION!
– Following the replacement of a mem‐
brane cap or electrolyte, the gradient
has to be calibrated!
– The gradient has to be calibrated at
regular intervals to ensure the perfect
operation of the sensor! Calibrating
the sensor every 3-4 weeks suffices
with swimming pool or potable water.
– Avoid air bubbles in the sample water,
which can result in incorrect metering!
Air bubbles, which adhere to the sen‐
sor'''s membrane can result in too low
a reading and thus lead to over-
metering.
– Please note the pertinent national
guidelines for calibration intervals!
Prerequisites
Constant flow rate at the flow gauge
–
Constant temperature of the sample
–
water
Identical temperature of sample water
–
and sensor (wait approx. 15 minutes)
The sensor has been run-in
–
Constant pH value
–