User calibration
: cAL
Manufacturing calibration : CAL
Zero
Test
Mode
On
Off
CAL
SEL
SEL
CAL
Mode
On
Off
cAL
SEL
Calibration Mode
On
Off
Mode
CAL
Cl
CAL
R E S U L T + x
R E S U L T + x
Mode
Zero
Test
0.0.0
Zero
Test
R E S U L T
R E S U L T
CAL
Zero
Test
On
Off
: :
Note
CAL
cAL
M E T H O D
M E T H O D
M E T H O D
M E T H O D
CAL
Recommended calibration values
Chlorine:
between 0,5 and 1,5 mg/l*
pH:
between 7,6 and 8,0*
Cyanuric acid:
between 30 and 60 mg/l
Total Alkalinity:
between 50 and 150 mg/l CaCO
3
Calcium Hardness: between 100 and 200 mg/l CaCO
3
* or rather values mentioned in the reference standard kits
User notes
E 10
E 70
E 72
E 74
E 71
E 73
E 75
Calibration factor "out of range"
Cl:
Manufacturing calibration incorrect / erase
pH:
Manufacturing calibration incorrect / erase
Cys:
Manufacturing calibration incorrect / erase
tA:
Manufacturing calibration incorrect / erase
CA.H: Manufacturing calibration incorrect / erase
Cl:
User calibration incorrect / erase
pH:
User calibration incorrect / erase
Cys:
User calibration incorrect / erase
tA:
User calibration incorrect / erase
CA.H: User calibration incorrect / erase
Press MODE key and
keep it depressed
.
Switch unit on using ON/OFF key.
Release MODE key after approx. 1 second.
Select the test required using the MODE key:
CAL
Cl
→
CAL pH
→
CAL Cys
→
CAL tA
→
CAL CA.H .
... (Scroll)
Perform zero calibration (see "Operation").
Press the ZERO/TEST key.
The method symbol flashes for approx. 3 seconds.
The display shows the following in alternating mode:
Place the calibration standard to be used in the sample
chamber with the
Δ
and
∇
marks aligned.
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 result displayed corresponds with the value of the
calibration standard (within the tolerance quoted), exit
calibration mode by pressing the ON/OFF key.
Otherwise, 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.
Pressing the relevant key until the displayed value 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).
Factory calibration active.
Calibration has been set by the user.
To reset the calibration to the factory setting:
Press both the MODE and ZERO/TEST and
keep them
depressed
.
Switch the unit on using the ON/OFF key. Release the
MODE and ZERO/TEST keys after approx. 1 second.
The following messages will appear in turn on the display:
The calibration is reset to the factory setting.
(SEL stands for Select)
or:
Calibration has been set by the user. (If the user calibration
is to be retained, switch the unit off using the ON/OFF
key.)
Calibration is reset to the factory setting by pressing the
MODE key. The following messages will appear in turn
on the display:
Switch the unit off using the ON/OFF key.
Technical changes without notice
Printed in Germany 07/98
E 76
E 77
1. Vials, caps and stirring rods should be cleaned thoroughly
after each
analysis
to prevent errors being carried over. Even minor reagent
residues can cause errors in the test results. Use the brush provided for
cleaning.
2. The outside of the vial must be clean and dry before starting the analysis.
Clean the outside of the vials with a towel. Fingerprints or other marks
will be removed.
3. Zero calibration and test must be carried out with the same vial as there
may be slight differences in optical performance between vials.
4. The vials must be positioned in the sample chamber for zero calibration
and test with the
Δ
-mark on the vial aligned with the
∇−
mark on the
instrument.
5. Place the cover on the sample chamber for zero calibration and test.
6. Bubbles on the inside of the vial may also lead to errors. In this case, fit
the vial with a clean stopper and remove bubbles by swirling the contents
before starting test.
7. Avoid spillage of water in the sample chamber. If water should leak into
the photometer housing, it can damage electronic components and
cause corrosion.
8. Contamination of the windows over the light source and photo sensor
in the sample chamber can result in errors. If this is suspected check
the condition of the windows.
9. When using reagent tablets, use only tablets in black printed foil. For pH
value determination, the PHENOLRED-tablet foil should also be marked
PHOTOMETER.
10.The reagent tablets should be added to the water sample without being
handled.
11.Large temperature differentials between the photometer and the
operating environment can lead to incorrect measurement due to the
formation of condensate in the area of the lens or on the vial (e.g).
12. To avoid errors caused by stray-light do not use the instrument in bright
sunlight.
Troubleshooting: Guidelines for photometric measurements
E 78
E 79
Correct filling of the vial
correct
wrong
10 ml
10 ml
