Amprobe GP-2 Geo-Test - Manual (Page 29)

GP-2 GeoTest
EN - 29
9. TECHNICAL SPECIFICATIONS
9.1. TECHNICAL FEATURES
Resistance measurement
Range (**)
(
Ω Ω
)
Resolution
(
Ω Ω
)
Accuracy (*)
0.01
ч
19.99 0.01
20.0
ч
199.9 0.1
200
ч
1999 1
±
(2% reading + 3 digits)
(*) If R
P
> 100R
E
and/or R
C
> 100R
E
, R
P
> 50k
Ω
and/or R
C
> 50k
Ω
, if the instrument carries out the test
the accuracy of the instrument is
±
(10%Reading)
R
P
= resistance of the voltage circuit
R
C
= resistance of the current circuit
R
E
= earth resistance
(**) Automatic selection of the range.
Measuring frequency 125Hz / 75Hz/ 41.66Hz
Measuring current 10mA
Open-terminal measuring voltage 25Vrms
Waveform of measuring voltage: sine wave
Interfering voltage:
-
amperometric circuit: the measurement is taken with the stated accuracy if the interfering voltage is
≤
3V,
while for interfering voltages between 3 and 30V inclusive, the accuracy decreases progressively; with an
interfering voltage of about 30V the instrument does not perform the test.
- voltmetric circuit: the measurement is taken if the interfering voltage is
≤
3V; in case of higher voltages
the instrument does not perform the test.