Fluke Fluke 4325155 User Manual

24 

The soil resistivity is the geological and physical quantity for calculation and design of 
earthing systems. The measuring procedure shown in Figure 10 uses the method 
developed by Wenner (F. Wenner, A method of measuring earth resistivity; Bull. National 
Bureau of Standards, Bulletin 12 (4), Paper 258, S 478-496; 1915/16). 

 

edv020.eps 

1.  Four earth stakes of the same length are positioned into the soil in an even line and 

with the same distance "a" to each other. The earth stakes should not be hammered 
in deeper than a maximum of 1/3 of "a". 

2.  Turn central rotary switch to position "R

E

 4pole". 

The instrument is to be wired according to picture and notices given on the display. 

3. Push 

START. 

4.  Read out measured value R

E

.