Conductivity Measurement - Consort C832 Anleitung

1. Select the conductivity range by pressing MODE (the display shows [µS] or
[MS]).
2. After rinsing the electrode with distilled water and then with some of the
sample, immerse it the sample.
3. Read the display (remember: compensated to the reference temperature!).
The autoranging feature gives you the largest possible number of digits + their
unit.
4. Rinse the electrode always after use and store it in distilled water (add some
detergent to keep the spongy platinum surface in perfect condition).
Calibration:
1. Select the conductivity range by pressing MODE (the display shows [µS] or
[MS]) and press CAL.
2. The display will show the cell constant (e.g. [cc=1.073]). Press CAL to start
the automatic determination procedure.
3. The display shows one of the KCl standard solutions in memory [St=0.01M][cc1]
(1413 µS/cm), [St=0.1M][cc1] (12.88 mS/cm), [St=1M][cc1] (111.8 mS/cm) or
the manual input [St=MAn]. Select the proper standard.
4. This step is skipped unless the manual input has been chosen. The display
shows e.g. [MS=10.00][cc1] while the units are blinking. Choose between
1.000 (units), 10.00 (tens) or 100.0 (hundreds) the desired calibration range
and press CAL again. The display shows e.g. [MS=1.234][cc1] while [=] is blink-
ing. Select the desired standard value (at real temperature!) (cc2 and cc3
should be at least 5 times stronger than the previous one).
5. After rinsing the electrode with distilled water and then with some of the
standard solution, immerse it the standard solution. The solution temperature
is not so critical but it should lie between 0°C and 30°C. If the standard has a
different temperature, compensate the indicated value manually (not neces-
sary when using a Pt1000). Press CAL.
6. The display will show the computed cell constant e.g. [cc1=1.045] and will
calibrate automatically when readings are stable ([=] stops blinking).
7. Go on in the same way from step 5 with all the next standard solutions
(cc2...cc3) by pressing CAL each time. Press MODE to stop the calibration
procedure.
Capacitive compensation:
1. Capacitive compensation increases accuracy in the very low conductivity
ranges (<10 µS/cm). Verify if the attached electrode is completely dry.
2. Select the conductivity range by pressing MODE (the display shows [µS] or
[MS]) and press CAL.
3. The display will show the cell constant (e.g. [cc=1.073]), [COMP.on] or
[COMP.OFF]. Select [COMP.on] and press CAL to start the automatic capaci-
tive compensation. The display will show [WAit] for a while.
• A blinking decimal point warns you for unstable measurements. Wait to read
the display!
• C832, C833, C835, C838: press RES to switch between ppm (TDS: ppm = mg/l,
ppt = g/l), SAL (salinity), S/cm (conductivity) or Ω.cm (resistivity: E6 = MΩ, E3
= kΩ, E0 = Ω).
• C832, C833, C835: when starting a titration, press Ú to lock the actual range
and avoid cross-over errors due to differences in the measuring frequency.
Press MODE to return to the normal measuring mode.
• Stirring the solution during the measurements promotes the homogeneity and
is therefore always recommended.
C831 • C832 • C833 • C835 • C838

Conductivity measurement

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