Endress+Hauser Stamolys CA71NO, Operating Instructions Manual

Page: 28 / 56

Operation
28
5.4.2 Calibration example
Proceed as follows if you want to activate an immediate calibration (e.g. after you have replaced the
reagents).
Ensure that you have changed the reagents, filled the hoses again (no air bubbles) and the analyser
is in measuring mode.
1. Hold
H
down until AUTO MEASURING appears.
2. Use
W
to move through the PARAMETER ENTRY menu and press
F
.
3. Use
F
to go to the "1st calibration" option.
4. Select the option with
F
5. Now use the
W
or
V
and
F
keys to set a time which lies in the past.
6. Press
F
to accept the value and then press
H
twice to return to the main menu (AUTO
MEASURING).
7. Press
F
again. This takes you back to measuring mode.
The calibration is now carried out automatically.
"
Caution!
After the calibration has finished, the analyser automatically goes into measuring mode. You now
have to set the time of the 1st calibration back into the future in order to align the calibration and
rinsing times to each other. The rinse must be performed 3-4 hours before the next calibration.
Proceed as described above to change the setting for the time of the 1st calibration. After changing
to measuring mode, the analyser automatically begins measuring, rinsing and calibrating at the
defined times.
Measuring range Concentration [mg/l] Frequency [Hz]
Nitrite, lower measuring range
NO-A 10 ... 500 μ g/l 0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.50 0
122
242
358
465
582
685
793
889
1083
Nitrite, medium measuring range
NO-B 0.1 ... 1.0 mg/l 0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
1.00 0
240
471
693
894
1091
1275
1423
1595
1895
Nitrite, upper measuring range
NO-C 0.2 ... 3.0 mg/l 0.00
0.30
0.60
0.90
1.20
1.50
1.80
2.10
2.40
3.00 0
716
1294
1767
2155
2429
2664
2846
2991
3225