CPC 100 V1.41
7 - 18
Figure 11:
Measuring the soil
resistivity
Legend:
ρ
= soil resistivity
d = distance between auxiliary electrodes (identical between all electrodes)
R = calculated resistance as indicated at the RGround test card (R(f))
With the spacing of "d", the test measures the average soil resistivity between
the U auxiliary electrodes down to a depth of "d". Therefore, varying "d" also
varies the depth of the volume for which the soil resistivity is to be measured.
The following table lists typical resistivity of some common soil types.
Δ
U
d
d
d
Auxiliary
electrode
U
Auxiliary
electrode
U
Auxiliary
electrode
I
Auxiliary
electrode
I
I
d = distance
d/20
ρ
= 2
π
d R
Summary of Contents for CPC 100
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Page 250: ...CPC 100 V1 41 8 32 Figure 24 Settings of Amplifier test card for this example use case...
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Page 282: ...CPC 100 V1 41 12 10 Figure 9 Saving tests with the CPC Editor...
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Page 372: ...OMICRON Contact Addresses 22...