Máy đo điện trở tiếp xúc MEGABRAS MPK204e micro-ohmmeter
Test currents
1 mA, 10 mA, 100 mA, 1 A, 10 A, 200 A.
Each current may be continuously adjustable from 0 to 100%.
Resistance ranges
Enviromental
IP54 with closed lid.
Safety class
Meets the requirements of IEC 61010-1.
Interface
USB.
Power supply
Mains or internal battery powered.
Internal battery: rechargeable, sealed lead-acid, 12 V - 7 Ah (for up to 10 A test current).
Mains supply: 220-240 V~ (for up to 200 A test current).
Built-in battery charger
For 220-240 V~ mains supply.
Operating temperature range
-5 °C to +50 °C.
Storage temperature range
-25 °C to +70 °C.
Humidity range
95% UR (non condensing).
Equipment weight
Approx. 16 kg.
Dimension
502 x 394 x 190 mm.
| Current |
Range |
Resolution |
| 200 A |
0-199.9 µΩ |
0.1 µΩ |
| 200 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. |
Measurement Principle
Four-terminal, Kelvin-type.
Continuous operation time
At 200 A this equipment may be used continuously for aprox. 3 minutes before the thermal protection activates.
At 10 A or less, there is not a limited time for continuous operation.
Basic Accuracy
R < 0.5 mΩ: ± (0.50% of reading + 2 ULSD*).
R ≥ 0.5 mΩ: ± (0.20% of reading + 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.
Termal protection
Protects all sensitive components, avoiding any damage due to overheating.