Fluke Fluke 4325181 User Manual

34 

Curve 3: 

With increasing depth 

ρ

E is not decreasing: a strip conductor electrode is 

advisable. 

As measuring results are often distorted and corrupted, for example, by 
underground pieces of metal and underground aquifers, a second 
measurement, in which the spike axis is turned by an angle of 90 °, is 
always advisable (see graph below). 

 

H

S

E

ES

90°

I

 

edw022.eps 

This measuring function determines the ohmic resistance between 0.02 

Ω

 and 300 k

Ω

. 

The measurement is done with ac voltage. For measurements of very low resistances a 
compensation of the connecting leads is suggested (see Compensation of Measuring 
Lead Resistance). 

 

edw023.eps 

1.  Turn central rotary switch to position "R~". 

2.  Connect instrument as shown in Figure 12.