Commissioning, measuring, checking – Xylem Sentix ORP 900 User Manual
Page 4
Commissioning, measuring, checking
SenTix
14
ba75845e01
08/2009
Commissioning, measuring, checking
Note
For ORP electrodes with platinum electrode, please follow the instructions in
Abschnitt A
.
Commissioning
Prepare the electrode for measuring as follows:
z
Open the refilling opening for the reference electrolyte solution. Depend-
ing on the model, the stopper of the refilling opening is an elastomer stop-
per or a slider.
The refilling opening must always be open during measurement!
z
Remove the watering cap from the electrode tip. Possible salt deposits in
the area of the watering cap do not affect the measuring characteristics
and can easily be removed with deionized water.
Note
Please keep the watering cap. It is required for the electrode to be stored.
Always keep the watering cap clean.
z
Connect the combination electrode to the meter.
z
Measure with the electrode according to the operating manual of the meter
and observe the following rules while doing so:
General rules for
measuring
z
Make sure the refilling opening for the reference electrolyte solution is
open.
z
Avoid the carryover of sample solution from one measurement to the next
as follows:
– Shortly rinse the sample beakers with the solution the beakers are to
be filled with next.
– Between measurements, rinse the electrode with the solution that fol-
lows. Alternatively, you can also rinse the electrode with deionized wa-
ter and then carefully dab it dry.
z
Immerse the electrode in the solution in a vertical or slightly tilted position.
z
Make sure the immersion depth is correct. The junction must be complete-
ly submersed in the solution. The junction is in the area of the bottom end
of the shaft (see arrow).
Refilling
opening