C931 • C932 • C933 12 / 47
(C933) Ion measurement
1. Select [ION] by pressing MODE. The display will immediately show the meas-
ured value according to the previous calibration. Should you want to recali-
brate, press CAL.
2. Select two proper standards from the values in memory, covering your future
measuring range, and press CAL.
3. Select [CALIBRATE] and press CAL.
4. After rinsing the electrodes with distilled water, immerse them in the first
standard solution. Select the first calibration value and press CAL when read-
ings are stable. Go on in the same way with the second standard solution.
5. Decide whether a blank correction should be carried out or not. Follow the
instructions on the screen. After rinsing the electrodes with distilled water,
immerse them in a blank solution. When readings are stable press CAL.
6. Rinse the electrodes with distilled water, immerse them in the samples, and
read the concentration on the display.
• Maintenance: we refer to the manual supplied with the ion specific elec-
trodes.
GLP
1. Select the desired range by pressing MODE and then press CAL.
2. Select [GLP] and press CAL.
3. Select [SHOW REPORT] and press CAL. Browse with Ù, Ú, × or Ø to show a
complete calibration report. Press PRINT to print the report.
pH/mV/Conductivity/°C-meter C931
--------------------------------
Date : 15/05/2003
Time : 11:32:04
Version : 1.0
SETTINGS
--------
Identification No : 003
Password : OFF
pH/°C correction : OFF
Temp. probe : ---
Manual temp. (°C) : 22.6
pH CALIBRATION
--------------
Date : 15/05/2003
Time : 11:20:06
Eo (mV) : 0
Buffer 4.008/6.865
Slope (%) : 98.4
Zero point (pH) : 6.871
Buffer 6.865/9.180
Slope (%) : 98.2
Zero point (pH) : 6.879
AVERAGE VALUES
--------------
Slope (%) : 98.3
Zero point (pH) : 6.875
Response time (s) : 11
Temperature (°C) : 22.6
STATISTICS
----------
Slope (%) : +0.4
Zero point (pH) : +0.002
Response time (s) : -1
Calibration reminder:
1. Select the desired range by pressing MODE and then press CAL.
2. Select [INTERVAL] and press CAL.
3. Select the desired time interval between each automatic warning for a new
calibration of the electrodes and press CAL.
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