14. Technical Specifications
Application
:
Earth resistance measuring of simple or complex
electrode systems, Ground resistivity
measurements (Four terminal Wenner’s
principle), and Spurious voltage according to IEC
61557-5
Resistance measurement
method
:
The equipment injects an electronically
generated current in the soil, and measures, with
high precision, both that current and the voltage
developed in the soil by means of that current
flowing through grounding diffusion resistance.
The display shows the Resistance value.
Operation frequency
:
270 Hz (resistance or resistivity measurement)
570 Hz, 870 Hz, 1170 Hz or 1470 Hz (resistance
measurement)
Max. variation: ± 1 Hz (both cases).
Resistivity measurement
method
:
The equipment injects the current in the soil
though the external rods, and measures, with
high precision, both that current and the voltage
developed in the soil. The operator should inform
the distance between spikes and the equipment
automatically computes soil resistivity. The
display shows resistivity value, computed with
Wenner full equation.
Voltmeter
:
In the voltmeter function, the equipment operates
as a voltmeter, making it possible to measure
voltages generated by parasitic currents.
Measurement ranges
:
Resistance: 0 - 20 kΩ (auto ranging)
Resistivity: 0 - 50 kΩm (auto ranging)
Voltage: 0 - 60 V
Accuracy
:
Resistance and Resistivity measurements:
R ≤ 2 kΩ: ± (2% of the measured value ± 2
digits)
R > 2 kΩ: ± (5% of the measured value ± 2
digits)
Voltage measurement:
± (3% of the measured value ±2 digits)
26
