Calibration Mode; User Calibration; Recommended Calibration Values - Lovibond CheckitDirect Mode D'emploi

Calibration Mode

GB
cAL
CAL
CAL
CLP
Zero
Test
METHOD
0.0.0
CAL
Zero
Test
METHOD
RESULT
CAL
Mode
Zero
Test
CAL
RESULT + x
On
Off
: :
Chlorine (PP):
pH-value:
CheckitDirect_Cl_Vario_pH_2b 05/2011

User calibration

4
Note:
user calibration (Display in calibration mode)
factory calibration (Display in calibration mode)
After confirming the selection with the [MODE] key the instrument will
show CAL/CLP.
Scroll through methods using the [MODE] key.
Fill a clean vial with the standard up to the 10 ml mark, screw the cap
on and place the vial in the sample chamber making sure that the
marks are aligned.
Press the [ZERO/TEST] key.
The method symbol flashes for approx. 8 seconds.
The display shows the following in alternating mode:
Perform calibration with a standard of known concentration (see
"Operation").
Press the [ZERO/TEST] key.
The method symbol flashes for approx. 3 seconds.
The result is shown in the display, alternating with CAL.
If the reading corresponds with the value of the calibration standard
(within the specified tolerance), exit calibration mode by pressing the
[ON/OFF] key.
Changing the displayed value:
Pressing the [MODE] key once increases the displayed value by 1 digit.
Pressing the [ZERO/TEST] key once decreases the displayed value by
1 digit.
Press the corresponding key until the reading equals the value of the
calibration standard.
By pressing the [ON/OFF] key, the new correction factor is calculated
and stored in the user calibration software.
Confirmation of calibration (3 seconds).

Recommended calibration values

between 0.5 and 1.5 mg/l
between 7.6 and 8.0
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