METREL MI 3250, Instruction Manual

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MI 3250 MicroOhm 10A Measurement
31
Figure 5.4: Example of Resistance measurement result
Note:

Consider displayed warnings before starting measurement!
5.2.1 Single Mode
Single mode makes a single bidirectional measurement. The instrument will measure
resistance in both directions (thermal EMF elimination). The main result displayed on the
display is an average (
2
 


R R
R
).
The range and current output can be automatically set or user defined.
Single measurement I/t plot
t
I
-I
+I
ADC ADC
t
u
t
Test
Start
Figure 5.5: Single Mode
Note:

The Single Mode can be primarily used for measuring:

Ralays

Switches

Connectors

Bus bars

Power distribution cable joints

Welding joints
5.2.2 Continuous Mode
Continuous mode makes continuous bidirectional measurements. The instrument will
measure resistance in both directions (thermal EMF elimination) and repeating the
measurements until the STOP key will be pressed. The main result displayed on the
display is an average of the last bidirectional measurement (
2
 


R R
R
).
The range and current output can be automatically set or user defined.