Calibration With Manual Values - XS Instruments 70 Serie Manuel D'utilisation

The instrument is now ready to recognize the second calibration point.

Next to the string "2ND POINT PH" the different buffers, that the device can recognize automatically,
scroll.
When the 4.01 value is recognized and the icon

string "PRESS OK".
The actual measured value and the Slope% flash on the display; subsequently, the icon of the beaker
pH 4.01 appears next to the green beaker, indicating that the instrument is calibrated in the acid
field.
 Remove the electrode, rinse with distilled water and dab gently with paper towel. Dip the sensor in the
pH 10.01 buffer solution ("CHANGE BUFFER").
 The instrument is now ready to recognize the third calibration point.
Next to the string "3RD POINT PH", the different buffers, that the device can recognize automatically,
scroll.
 When the value 10.01 is recognized and the icon
the string "PRESS OK".
Switching from an acidic to a basic pH may take a few more seconds to achieve stability.
The actual measured value and the second Slope% flash on the display; subsequently, the icon of the
beaker pH 10.01
calibrated in the alkaline field.
At the end of the third calibration point, the instrument returns automatically to measure mode.

 To perform a one- or two-point calibration, press the key
Note: electrode calibration is an essential operation for the quality and truthfulness of a
measurement. Therefore, make sure that the buffers used are new, unpolluted and at the same
temperature.
ATTENTION: Before proceeding with the calibration operations, carefully consult the safety data sheets
of the substances involved:
 Calibration buffer solutions.
 STORAGE solution for pH electrodes.
 Filling solution for pH electrodes.
 Calibration with manual values
Example: two-point calibration pH 6.79 and pH 4.65 (DIN 19267)
Access the Setup menu for pH and select in the P1.1  Custom, press twice the key

the measurement and position in pH mode
Press to enter the calibration mode.

Rinse the electrode with distilled water and gently dab it with paper towel. Dip the electrode in the

first pH buffer solution (e.g. pH 6.79).
Wait for the pH value on the display to stabilize; when the icon

modify it using the directional keys by entering the correct one (e.g. pH 6.79), as suggested by the
string "ADJUST THE VALUE" and by the icon
Note: Check the buffer value according to the temperature.
UM Serie 70Vio EN rev. 1 04.06.2020
appears next to the green and red beakers, indicating that the instrument is
.
.
18
appears, press the key
appears, press the key
once finished the first or second point.
appears and the value flashes,
as indicated by the
, as indicated by
to return to
EN