8. Technical specifications
Test currents
:
1 mA, 10 mA, 100 mA, 1 A, 10 A, 100 A.
Each current may be continuously adjustable from
0 to 100%
Resistance ranges
:
Currents
Range
Resolution
100 A
0-199.9 µΩ
0.1 µΩ
100 A
0-1999 µΩ
1 µΩ
10 A
0-1999 µΩ
1 µΩ
10 A
0-19.999 mΩ 1 µΩ
1 A
0-19.99 mΩ
10 µΩ
1 A
0-199.99 mΩ 10 µΩ
100 mA
0-199.9 mΩ
100 µΩ
100 mA
0-1999.9 mΩ 100 µΩ
10 mA
0-1999 mΩ
1 mΩ
10 mA
0-19.999 Ω
1 mΩ
1 mA
0-19.99 Ω
10 mΩ
1 mA
0-199.99 Ω
10 mΩ
For each test current, ranges are automatically selected
for optimal reading.
Output voltage
:
Up to 10 Vd.c. @ 1 A (open circuit).
Measurement principle
:
Four-terminal, Kelvin-type.
Continuous operation time :
At 100 A this equipment may be used continuously
for approx. 15 minutes before the thermal
protection activates.
At 10 A or less, there is not a limited time for
continuous operation.
Thermal protection
:
Protects all sensitive components, avoiding any
damage due to overheating.
Basic accuracy
:
R < 0.5 mΩ: ± (0.50% of r 2 ULSD*)
R ≥ 0.5 mΩ: ± (0.20% of r 2 ULSD*)
* Units of the Least Significant Digit.
Advanced features
:
Digital direct reading of very low resistances in the
alphanumerical display, with up to 4½ digits. Very
fast and accurate measurements.
Test current measurement :
The current is digitally measured and a bargraph
shows the result. The bargraph indication is
especially useful when measuring inductive loads,
so that the operator can verify easily when the test
current has been stabilized.
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