Conductivity Measurement; Dissolved Oxygen Measurement; Air Pressure Measurement - Consort R361 Mode D'emploi

Measurement:
1. Select the desired mode with çè. The display will immediately show the
measured value according to the previous calibration. Should you want to rec-
alibrate, press CAL.
2. The display shows the three standards in memory (0.01, 0.1, 1 M KCl). Select
the proper values and press CAL. The unused standards should be switched
off.
3. Select the temperature to which all future measurements will be referred to
(REF: 25°C) and press CAL.
4. After rinsing the electrode several times with the first standard solution,
immerse it in that standard. The solution temperature is not so critical but
should lie between 0°C and 30°C. When no Pt1000 is used, do not forget
to compensate manually first! Select [CALIBRATE], press CAL and follow the
instructions on the screen until the calibration is finished.
5. Rinse the electrode several times with the sample, immerse it in that solution
and read the display.
6. Rinse the electrode always after use and store it in distilled water (add some
detergent to keep the spongy platinum surface in perfect condition).
Capacitive compensation:
1. Capacitive compensation increases accuracy in the very low conductivity rang-
es (<10 µS/cm). Select whether or not this compensation should be applied.
Verify if the attached electrode is completely dry and press CAL. Select
[CAP.COMP] (yes or no) and press CAL. Follow the instructions on the screen.
1. Select the desired mode with çè. The display will immediately show the
measured value (in ppm or %O
you want to recalibrate, press CAL.
2. The display shows the salinity correction. Leave salinity correction to zero
unless you are going to measure in heavily salted solutions such as e.g. sea-
water (35 g/l). Select [CALIBRATE], press CAL and follow the instructions on
the screen until the calibration is finished.
3. The electrode exposed to the air reaches an equilibrium corresponding to the
partial pressure of oxygen and thus to saturation in water at the given temper-
ature. The instrument shows the measured saturation, current, temperature,
and will calibrate automatically when readings are stable.
4. After rinsing the electrodes with distilled water, immerse them in the samples
and read the display. Stirring the solution during the measurements promotes
the homogeneity and is obligatory! The advection rate must be at least 10
cm/s.
5. Rinse the electrode always after use and store it in distilled water.
• Press ê to change the resolution from 0.1 to 0.01 ppm or from 1 to 0.1 %.

Air pressure measurement:

1. Select the desired mode with çè. The display will immediately show the
measured value according to the previous calibration. Should you want to rec-
alibrate, press CAL.
2. Select [CALIBRATE], press CAL, adjust to the proper value and press CAL.
Select [RESET] and press CAL to reset the calibration.
•
R361 • R362 • R363
) according to the previous calibration. Should
2

Conductivity measurement

Dissolved oxygen measurement

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