AMPROBE
MULTITEST2000
Black
B
la
ck
Blue
B
lu
e
Green
G
re
e
n
Red
R
e
d
a
a
a
a
a
a
90°
The resistivity value is calculated with the following formula:
ρ=2πaR
Where:
ρ= specific resistivity of the ground
a= distance between the rods (m)
R= resistance measured by the instrument (
Ω)