MI 3242 MicroOhm 2A
Measurements
27
6.2.3
Auto Mode
Automatic mode makes a single bidirectional measurement. The instrument will
measure resistance in both directions (thermal EMF elimination) and started a single
measurement every time the P1, P2, C1 and C2 are connected to the test object. The
main result displayed on the display is an average of the last bidirectional measurement
(
2
R
R
R
).
To make another measurement simply break and remake contact with the test sample.
Automatic measurement I/t plot
Figure 6.7: Automatic Mode
Note:
The Automatic Mode can be primarily used for measuring Bus bars.
Note about thermal EMF:
A junction between two different metals produces a voltage related to a temperature
difference (thermocouple). MicroOhm 2A eliminates the thermal EMF effect by
measuring resistance in both directions I+ and I-.
