METREL MI 3250 - Automatic Measurement Mode

MI 3250 MicroOhm 10A Measurement
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The measurement is started and stopped by the user.
Continuous measurement I/t plot
t
I
-I
+I
ADC ADC
t
u
t
Test
-I
+I
ADC ADC
Start Stop
Figure 5.6: Continuous Mode
Note:
 The Continuous Mode is especially helpful for troubleshooting.
5.2.3 Automatic 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



RR
R
).
The range and current output can be user defined before the test or automatically set.
To make another measurement simply break and remake contact with the test sample.
Automatic measurement I/t plot
t
I
-I
+I
ADC ADC
t
u
t
Test
t
P1,P2,C1,C2 = OK
u
-I
+I
ADC ADC
P1,P2,C1,C2 = OK
Start Stop
P1,P2,C1,C2 ≠ OK
Figure 5.7: Automatic Mode
Note:
 The Automatic Mode can be primarily used for measuring Bus bars.