Xylem WTW SensoLyt 900, Operating Manual

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Storage SensoLyt
®
900(-P)
6
ba75992s02 02/2017
measurement to the next by taking the following measures:
– Shortly rinse the calibration and 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
water and then carefully dab it dry.
 To measure in aqueous solutions, it is recommended to immerse the elec-
trode in a vertical or slightly tilted position.
 Observe the correct depth of immersion and make sure the contact
between the junction and test sample is thorough. The junction (hole junc-
tion) is in the area of the bottom end of the shaft.
 For measurements in aqueous solutions, provide approximately the same
stirring conditions for measuring as for calibrating.
NOTE
Prevent contact of the pH membrane to the beaker bottom to avoid
scratches on the pH membrane.
Subsequent
calibrations
The frequency of subsequent calibrations depends on the application. The
meters provide an option where you can enter a calibration interval. After the
calibration interval has expired, the meter will automatically remind you of the
due calibration.
3 Storage
During short
measuring breaks
Immerse the electrode in reference electrolyte (KCl 3 mol/L, Ag
+
free). Prior
to the next measurement, shortly rinse the electrode with the test sample or
deionized water.
Overnight or
longer
Put the clean electrode in the watering cap that is filled with reference elec-
trolyte (KCl 3 mol/L, Ag
+
free).
NOTE
Do not store the electrode dry or in deionized water.
The electrode could be permanently damaged by this.
If the liquid in the watering cap has dried up, condition the electrode in
reference electrolyte (KCl 3 mol/L, Ag+ free) for at least 24 hours.
Junction