HT instruments GEO416 - Manual (Page 16)

GEO416 - GEO416GS
EN - 15
4.5.1. Anomalous measuring applications
1. When starting a measurement the
instrument checks the continuity of
measuring cables. If the volt circuit
(red cable S and green cable ES) is
interrupted or its resistance value is
too high, the instrument displays a
screen similar to the one beside. Check
that terminals are properly connected
and that the earth rod is connected to
Volt circuit’s resistance too
high
Value of input interfering
voltage
Example for 3W mode
terminal S and not driven into a pebbly or scarcely conductive ground. In this latter
case pour water around the rod to decrease its resistance value (§ 11.2).
RP>top is displayed when:
 The S rod’s resistance R
S
> 50KΩ is summed up to the volt circuit
 The resistance of rod S exceeds the value 1200 + 100 R
X
[Ω] (where R
X
is the
earth resistance value)
2. When starting a measurement the
instrument checks the continuity of
measuring cables. If the ampere
circuit (blue cable H and black cable
E) is interrupted or its resistance
value is too high, the instrument
displays a screen similar to the one
beside. Check that terminals are
properly connected and that the earth
rod is connected to
Ampere circuit’s resistance
too high
Value of input interfering
voltage
Example for 3W mode
terminal H and not driven into a pebbly or scarcely conductive ground. In this latter
case pour water around the rod to decrease its resistance value (§ 11.2).
RC>top is displayed when:
 The H rod’s resistance R
H
> 50KΩ is summed up to the ampere circuit
 The resistance of rod H exceeds the value 1200 + 100 R
X
[Ω] (where R
X
is the
earth resistance value)
3. When starting a measurement the
instrument checks the continuity of
measuring cables. If the volt circuit
(red cable S and green cable ES) and
the ampere circuit (blue cable H and
black cable E) are both interrupted or
their resistance values are too high,
the instrument displays a screen similar
to the one beside. Check that the
Both volt and ampere
circuits’ resistance too high
Value of input interfering
voltage
Example for 3W mode
terminals are properly connected and that the earth rods connected to terminals S
and H are not driven into a pebbly or scarcely conductive ground. In this latter case
pour water around the rods to decrease their resistance value (§ 11.2).
RP, RC>top is displayed when:
 The S rod’s resistance R
S
> 50KΩ is summed up to the volt circuit and the H
rod’s resistance H R
H
> 50KΩ is summed up to the ampere circuit
 Both the S rod’s resistance and the H rod’s resistance exceed the value 1200 +
100 R
X
[Ω] (where R
X
is the earth resistance value)