LEM SATURN GEO plus Manuel D'utilisation page 14

Troubleshooting

Is your R measurement result reliable?
A
Probe S/P2 must be outside the potential gradient areas of E/C1 and H/C2
for accurate measurements. Normally a probe distance of more than 20m is
sufficient. However in some environmental conditions (depending mainly on
the soil resistivity) this may not suffice. To be sure reposition the probes and
take several measurements. If the readings are approx. the same your
measuring results are reliable, if not increase the probe distance.
1
3
>Limit
S
E S H
U
ext >Limit
4
2
H
>Limit
E ES S H
‘
Is the result of a „Stakeless ground loop
measurement" reliable?
Ensure that you are using the correct inducing clamp (see „Recommended
Accessories")!
The clamp's parameters are suited for this test method. Using an undefined
clamp will render incorrect results.
Ensure that the recommended minimum distance between the current clamp
is kept. If the clamps are positioned too close together, the magnetic field of
the inducing clamp will influence the sensing current clamp. To avoid mutual
influencing, the distance between the clamps can be varied. If the
measurement values vary only a little or not at all, the value can be regarded
as reliable.
max 50 V
E ES S H
E/C1 S/P2
easy
>20 m >20 m
Us
E S H
5
- 13 -
H/C2
Ug