31
Rev. 1 24/01/2020
EN
•
By default, no calibration deadline is set. Use the directional keys to select HOURS or DAYS and access
with
. Use the directional keys to change the number that appears in the centre of the display,
entering the hours or days that must elapse between two settings, and confirm with key
.
•
If a calibration deadline is set, the icon is present on the display in measure mode
.
When the calibration deadline is activated, the instrument prevents further measurements.
The error icon
and the icon representing the calibration deadline
flash on the display.
The string “
MAKE A NEW CAL
” invites the user to perform a new calibration of the pH sensor to be
able to work again.
Press the key
to start the calibration.
P3.8 COND parameter Reset
If the instrument does not work properly or incorrect settings have been made, confirm
YES
with the key
to return all the parameters of the pH menu to the default settings.
IMPORTANT:
The factory reset of the parameters DOES NOT delete the stored data
P3.9 Temperature calibration
All the instruments in this series are pre-calibrated for a correct temperature reading. However, if there is a
difference between the measured and the real one (usually due to a probe malfunction), it is possible to
perform an offset adjustment of + 5°C.
Use the keys
and
to correct the temperature offset value and confirm with
.
•
Automatic COND calibration
Example: one-point calibration (1413 µS / cm) using a cell constant sensor 1
•
In
COND
measurement mode
press the key
to enter the calibration mode.
•
Rinse the cell with distilled water and dab gently with paper towel.
Start with a few ml of standard solution. Dip the sensor in the standard 1413 µS / cm, keeping it slightly
stirred and making sure that there are no air bubbles in the cell.
•
On the display, next to the string “
POINT COND
”, all the Conductivity values, that the instrument can
recognize, alternate.
•
The string “
WAIT FOR STABILITY
” and the flowing red bands indicate that the measurement is not stable
yet.
•
When the value stops on 1413 and the icon
appears: confirm the calibration with the key
,
as indicated by the string “
PRESS OK
”.
•
The actual measured value flashes on the display and then it is shown the updated cell constant.
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