Digital DC bridge QJ57C
Digital DC bridge QJ57C is a new generation of wire and cable DC resistance test equipment, is a new generation of QJ44, QJ57. The bridge adopts the Σ-△ type A/D conversion principle, featuring high measurement accuracy, digital filtering, fast averaging and automatic calibration. The bridge uses a 5-digit half-LED display for direct reading of resistance measurement data.
Details About Digital DC bridge QJ57C
Standard:
GB/T3048.4-200
Technical parameters:
| Range | Test current | Resolution | Measuring range | Basic error |
| 20mΩ | 1A | 1μΩ | 0-20.000 mΩ | ± (0.1%Rx+0.15%Rm) |
| 200mΩ | 0.5A | 1μΩ | 0-200.000mΩ | ± (0.05%Rx+0.1%Rm) |
| 2Ω | 100mA | 10μΩ | 0-2.00000Ω | ± (0.05%Rx+0.05%Rm) |
| 20Ω | 100mA | 100μΩ | 0-20.0000mΩ | |
| 200Ω | 10mA | 1mΩ | 0-200.000Ω |
Remark: The 20mΩ file is displayed with 4 and a half digits (at <mΩ, the last digit of the measured value is reduced by 3 words).
The 200mΩ-200Ω file is a 5-digit display.
Specification:
- Overall dimension: 383*296*166 mm
- Power: AC220±22V, 50±1.5HZ
- Weight: 4kg
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