MI 3290 Earth Analyser
Tests and Measurements
97
Ω - Meter (200 mA) measurement procedure:
Select the Ω - Meter (200 mA) measurement function.
Set the test parameter (limit).
Connect the test leads to the instrument.
Compensate the leads (optional).
Connect the test leads 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).
Note:
Consider displayed warnings when starting the measurement!
11.5.2
Ω - Meter (7 mA) Measurement
In general, this function serves as standard
- meter with a low testing current. The
measurement is performed continuously without polarity reversal. This function can also be
applied for testing continuity of inductive components.
I
dc
C1
C2
MI 3290 Earth Analyser
G
V
A
Rx
2 wire
Figure 11.56:
Ω - Meter (7 mA) example
In the example following resistance is measured:
R =
𝑈
𝐷𝐶
[𝑉]
𝐼
𝐷𝐶
[𝐴]
= [𝛺]
where:
R
....................................... Resistance
I
dc
...................................... Injected test current DC
U
dc
.................................... Measured DC voltage between C1 and C2 terminals
Test ca
n be started from the Ω - Meter measurement window. Before carrying out a test the
following parameters (Sound and Limit (R)) can be edited.
Figure 11.57
: Ω - Meter (7 mA)
measurement menu
Figure 11.58: Example of
Ω - Meter (7 mA)
measurement result
