UC2518-18A DC Resistance Tester

UC2518-18A DC Resistance Tester

The UC2518 Series DC Low Resistance Tester is a high-speed, high-precision resistance measurement instrument with advanced temperature compensation and temperature conversion functions. It is ideal for production line testing, quality inspection, laboratory measurement, and automated test systems.

Model Range

  • UC2518: 1 μΩ – 10 MΩ
  • UC2518A: 10 μΩ – 200 kΩ

Performance Characteristics

  • 4.3-inch TFT LCD display (480 × 272 RGB resolution)
  • Direct U-disk storage for test results
  • Maximum resistance accuracy up to 0.05%
  • Built-in comparator with HI / LO / IN sorting
  • Temperature compensation and temperature conversion functions
  • Temperature basic accuracy: 0.1℃
  • Statistical functions: Cp, CpK and other analysis
  • 100+ internal setting files, expandable to 500+ via U-disk
  • Firmware upgrade via USB HOST
  • Supports FAT16 / FAT32 file systems
  • Standard HANDLER, USB HOST, USBCDC, USBTMC interfaces
  • Optional RS232C and GPIB interfaces

Applications

Suitable for testing coil, inductor, transformer, voice coil, relay contact resistance, connector resistance, fuse resistance, cable resistance, PCB resistance, welding resistance, conductive film, and metal resistance. Temperature compensation eliminates temperature effects during measurement.

General Specifications

Operating Temperature / Humidity 0°C – 40°C, ≤85% RH
Power Supply Voltage 198V – 242V AC
Power Frequency 47.5Hz – 63Hz
Power Consumption ≤ 30 VA
Dimensions (W × H × D) 240 × 100 × 345 mm
Weight Approx. 2 kg

Measurement & Function Specifications

Basic Accuracy 0.05% + 2 digits (2MΩ: 0.2%, 10MΩ: 0.3%)
Measuring Speed (50Hz) Fast: 22ms / 2.7ms, Medium: 42ms, Slow: 102ms
Measuring Speed (60Hz) Fast: 18.5ms / 2.7ms, Medium: 35ms, Slow: 102ms
Statistics Cp, CpK statistical analysis
Range Selection Automatic / Hold / Manual
Trigger Mode Internal / External
Averaging 1 – 255 times
Delay Time 0 – 9999 ms (1 ms step)
Calibration Short circuit, zero, load correction
Test Configuration 4-terminal Kelvin measurement
Display Mode Direct reading, Δ%

Resistance Range & Measuring Current (UC2518)

Range Test Current Measurement Range
20 mΩ 1 A 1 μΩ – 20 mΩ
200 mΩ 100 mA 20 mΩ – 200 mΩ
2 Ω 100 mA 200 mΩ – 2 Ω
20 Ω 10 mA 2 Ω – 20 Ω
200 Ω 1 mA 20 Ω – 200 Ω
2 kΩ 100 μA 200 Ω – 2 kΩ
20 kΩ 100 μA 2 kΩ – 20 kΩ
200 kΩ 10 μA 20 kΩ – 200 kΩ
2 MΩ 1 μA 200 kΩ – 2 MΩ
10 MΩ 100 nA 2 MΩ – 10 MΩ

Temperature Measurement & Compensation

Temperature Accuracy 0.1℃
Measurement Time 100 ±10 ms
Temperature Sensor Pt sensor, -10.0℃ – 99.9℃
Analog Input 0 – 2 V (−99.9℃ – 999.9℃)
Temperature Compensation Converts resistance to set reference temperature
Temperature Conversion Converts resistance change into temperature change

Standard Accessories

  • UC9541 Temperature probe (Pt)
  • UC26004-1 Four-terminal Kelvin test cable

Optional Accessories

  • UC26001A Five-terminal test box
  • UC26009B SMD patch test clip
  • UC6801-01 Pedal start switch