Performing The Calibration - Tintometer SD 300 pH Bedienungsanleitung

6.4.2 Performing the calibration

Please observe: A calibration can only be performed in the temperature range from
0 - 60 °C!
If you have not done so yet, select the "pH" measurement function and activate the 1, 2 or
3-point calibration and the corresponding buffer series (Std, Edit or din), as neces-
sary (see 7 "Configuration of the instrument").
Carefully pull off the protective cap from the electrode (Caution! Contains 3 M KCl!).
Rinse off the electrode with distilled water and dry.
Start of the calibration: Press and hold the
The command for the measurement of the 1st calibration solution appears in the display. The
calibration can be cancelled at any time with the
calibration remains valid.
1. Calibration point 1: "Pt. 1"
Place the electrode and the
temperature sensor (if pre-
sent) in the neutral solution
and carefully stir.
(Any arbitrary solution (e.g.
pH 4) can be used for 1-point
calibration)
As soon as a stable measure-
ment has been determined,
*1)
the instrument continues to
the next point.
The calibration is now finished with 1-point calibration; the electrode status is signalled with
the left bar display.
2. Rinse the electrode with distilled or deionised water and dry
3. Calibration point 2: "Pt. 2" (only with 2 or 3-point calibration)
Place the electrode and the
temperature sensor (if pre-
sent) in the second buffer
solution. (e.g. with standard
series: pH 4.01 or pH 10.01)
and carefully stir.
As soon as a stable measure-
*1)
ment has been determined,
the instrument continues to
the next point.
38
button for two seconds.
button. In this case, the previous
W i t h o u t t e m p e r a t u re
sensor: Manual entry of
Buffer 1 temperature
Enter with the buffer temperature with but-
tons: or
The value is adopted with
next calibration step is displayed.
W i t h o u t t e m p e r a t u re
sensor: Manual entry of
Buffer 2 temperature
Enter with the buffer temperature with but-
tons: or
The value is adopted with
next calibration step is displayed.
SD_300_pH_1 01/2013
.
and the
.
and the