User messages
E 10
E 71
E 73
E 75
Calibration factor “out of range”
No light at detector or too much light at detector, maybe
due to measurement range overflow
t1:
User calibration incorrect / erased
t2:
User calibration incorrect / erased
t3:
User calibration incorrect / erased
t4:
User calibration incorrect / erased
After using the interim value calibration mode, "cAL" will
appear during a new calibration to indicate the previous
calibration mode used.
Calibration Mode (for supplied standards with defined values)
CAL
t1
: :
Technical changes without notice
Printed in Germany.
Press and hold "mode" key.
Switch unit on using "power" key.
Release "mode" key after approx. 1 second.
Press "mode" key to change the measuring range:
CAL t1
→
CAL t2
→
CAL t3
→
CAL t4
→
..... (Scroll)
Position vial (with required standard - see “Supplied turbidity
standards”) with alignment of
∇
and
∆
marks. Close the
sample chamber using the sample chamber cover.
Press the "zero/test" key.
The measuring range symbol flashes for approx. 9 seconds.
The display confirms that calibration is complete.
Switch the unit off using the "power" key. The new
correction factor is stored.
E 77
R A N G E
R A N G E
R A N G E
Calibration Mode (for interim values)
CAL
t 1
Press and hold both "mode" and "zero/test" together.
Switch unit on using "power" key,
Release "mode" key after approx. 1 second.
Press "mode" key to change the measuring range:
CAL t1
→
CAL t2
→
CAL t3
→
CAL t4
→
..... (Scroll)
Fill a clean and dust-free vial with the standard up to the
mark (pour the standard along the inner wall of the vial to
avoid air bubbles, see Note 5). Screw the cap on and
align the
∇
-mark on the vial with the
∆
-mark on the
instrument. Close the sample chamber using the sample
chamber cover.
Press the "zero/test" key.
The method symbol flashes for approx. 9 seconds.
If the result corresponds with the value of the calibration
standard used (within the allowed tolerance), exit
calibration mode by pressing the "power" 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.
Press the relevant key until the displayed value equals
the value of the calibration standard.
By pressing the "power" key twice, the new correction
factor is calculated and stored.
Confirms calibration (3 seconds).
The unit then switches itself off.
R A N G E
R A N G E
R A N G E
CAL
R E S U L T + x
R E S U L T + x
R E S U L T + x
R E S U L T
R E S U L T
R E S U L T
: :
cAL
233312-001 Rev.D
E 24
zero
test
power
mode
power
mode
zero
test
power
power
mode
zero
test
zero
test
