METREL MI 3290 User Manual

MI 3290 Earth Analyser Tests and Measurements
91
Test can be started from the Wenner method measurement window. Before carrying out a
test the following parameters (Test Voltage, Distance (a) and Limit (ρ)) can be edited.
Figure 11.44: Wenner method measurement menu
Test parameters for Wenner method:
Test Voltage
Set test voltage: [20 V or 40 V]
Length Unit
Set the length unit: [m or ft]
Distance (a)
Set the distance between earth probes: [0.1 m – 49.9 m] or [ 1 ft – 200 ft ]
Limit (ρ)
Limit value selection: [OFF, 0.1 Ωm – 900 kΩm]
Limit value selection: [OFF, 1 Ωft – 900 kΩft]
Wenner method Measurement procedure:
 Select the Wenner method measurement function.
 Set the test parameters (voltage, distance and limit).
 Connect the test leads to the instrument and to the test object.
 Press the Run key to start the measurement.
 Wait until the test result is displayed on the screen.
 Save results (optional).
Figure 11.45: Example of Wenner method
measurement result
Notes:
 Consider displayed warnings when starting the measurement!
 High noise currents and voltages in earth could influence the measurement results. The
tester displays the “noise” warning in this case.
Notes (Probes):
 High impedance of S and H probes could influence the measurement results. In this
case, “Rp” and “Rc” warnings are displayed. There is no pass / fail indication in this
case.
 Probes must be placed at a sufficient distance from the measured object.

METREL MI 3290 Specifications

General

Brand	METREL
Model	MI 3290
Category	Measuring Instruments
Language	English