Consort C561, Manual

Page: 5 / 24

1
C561 • C562 C561 • C562
2
Inputs
The measuring electrodes should be connected to the corresponding coaxial pH/
mV or EC/O
2
connectors. Automatic temperature compensation and temperature
measurements are possible by plugging a Pt1000 temperature probe into the °C
terminals. You can also use an electrode with built-in Pt1000. Its banana plugs
should be inserted in the °C terminals. Without Pt1000, the manual temperature
compensation is automatically switched on.
pH measurement
1. Select [pH] by pressing MODE . The display will immediately show the measured
value according to the previous calibration. Should you want to recalibrate,
press CAL .
2. The display shows three of the 9 buffers in memory (1.68, 4.00, 4.01, 6.87,
7.00, 9.18, 9.21, 10.01, 12.45). Select the proper buffers and press CAL . The
unused buffer should be switched off.
3 . Rinse the electrodes with distilled water and immerse them in the first buffer
solution. Select [CALIBRATE], press CAL and follow the instructions on the
screen until the calibration is finished.
4. After rinsing the electrodes with distilled water, immerse them in the samples
and read the display.
5. Rinse the electrodes always with distilled water after use and store them in a
3...4 M KCl solution.
mV measurement
1. Select [mV] by pressing MODE . The display will immediately show the meas-
ured value according to the previous calibration (optional). Should you want
to recalibrate, press CAL .
2 . Immerse the electrodes in a standard solution of known potential. Select
[CALIBRATE] and press CAL . Calibrate to the proper value and press CAL again
or press MODE to reset the factory settings.
3. Rinse the electrodes always with distilled water after use and store them in a
3...4 M KCl solution.
Important
• Never immerse a pH electrode and an oxygen electrode together in the same
solution!
• A blinking decimal point warns you for unstable measurements. Wait to read
the display!
• Stirring the solution during the measurements promotes the homogeneity and
is obligatory!
• The instrument will refuse automatic calibration when the electrode is unsta-
ble. Insufficient stirring or a worn electrode may be the cause.
GLP
1. Select the desired range by pressing MODE .
2. Press CAL , select GLP and press CAL to display a complete calibration report.
Logging data
1.
Press
ê
to store the displayed value in memory. The display shows a next stor-
age address.
2.
Select the desired address and press
CAL
to enter the measured value in
memory.
Recalling data
1. Press
é
to recall the stored data. The display shows a list of stored values.
2. Select the desired address to read the stored values.
3. Press MODE to return to the normal measurements.