ENGLISH
– 41 –
HOW TO MEASURE CONDUCTIVITY
a) Connect the connector of the conductimetry cell to the instrument
paying attention to the polarization mark. Immerse the probe in the
solution so that the electrodes are covered. Shake the probe gently
so that any air inside it will escape.
b) Switch on the instrument by pressing the ON/OFF key. If the instrument
has not been calibrated, proceed to do so.
c) Set the temperature coefficient.
d) Press the
key to measure the conductivity of the liquid with reference
to the temperature of 20°C or 25°C. If you wish to measure the absolute
conductivity (that is without temperature compensation) just set
α
T
at
0.00.
e) After use rinse the probe with clean or, better, distilled water.
MEASURING CONDUCTIVITY WITH 2-ELECTRODE
PROBES
The instrument may be fitted with 2-electrode probes with or without a
Pt100 temperature sensor and cell constant K 0.1, 1 or 10 • cm
-1
.
The measuring range of these cells is indicated in the diagram below:
1
10
100
10
100
1000
µ
S / cm
mS / cm
0.1
K=10
K=1.0
K=0.1
Содержание HD 9213-R1
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Страница 3: ...29 HD 9213 R1 ENGLISH MICROPROCESSOR CONDUCTIVITY METER THERMOMETER...
Страница 17: ...ENGLISH 43 Conductivity of dilute solutions Conductivity of high concentration solutions...