The KDBR-A is an intelligent tester designed for precise measurement of conductor DC resistance and material resistivity. It uses a four-terminal measurement method with 13 measurement ranges and 10 current levels, delivering high accuracy (±0.05% for 1mΩ~10KΩ). It automatically converts resistance to 20°C and calculates volume resistivity based on sample dimensions. With built-in temperature compensation and USB communication, it supports automated testing, data storage, and report generation, making it essential for wire and cable manufacturing and quality assurance.

• Four-terminal measurement method for high-precision resistance testing
• Wide resistance range: 0.0001μΩ~2.5MΩ with 13 ranges and 10 current levels
• Automatic temperature conversion to 20°C and volume resistivity calculation
• Built-in standard database for wire and cable specifications (GB/T3956, IEC60228)
• USB communication for PC control, data storage, and report generation
• Automatic zeroing and reverse current measurement to reduce thermal EMF effects
• Static electricity protection and calibration function for long-term stability
• Supports both lab and on-site testing modes

• Resistance Range: 0.0001μΩ~2.5MΩ
• Accuracy: ±0.03%~±0.05% (depending on range)
• Current Levels: 1μA, 10μA, 100μA, 1mA, 10mA, 0.1A, 0.5A, 1A, 5A, 10A
• Temperature Range: -99~99°C (expandable), accuracy: ±0.1°C (-20~50°C)
• Voltage Measurement: 0~2.5V, accuracy: ±0.02%
• Power Supply: 220V±10% AC
• Interfaces: USB
• Standards: GB/T3048.4, GB/T3956, IEC60228, GB/T3952, etc.