Transmitter 9125 – Conductivity / resistivity measurement
Page 58
where :
The dipole Rp, Cp represents the active and reactive
part of the energy necessary to the electron exchange
between the sample and the electrodes.
and :
Cc
: the cable capacity
Frequency adjustment according to the conductivity
measurement
0,1
1
10
Cond (theo.) / Cond (meas.)
1E1
1E2
1E3
1E4
1E5
real conductivity (uS/cm)
Auto frequency
62.5 Hz
8000 Hz
Probe 8317 (K=1)
100 m of cable
In the example below 3 measuring ranges are
described :
x
measuring range 1
μ
S/cm to 100
μ
S/cm :
When the measuring frequency is high, the cable
capacity becomes important and induces an error
in the conductivity measurement.
If you use a long cable, use the lowest
frequency possible.
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