Description
The Tonghui TH2518 is a highly flexible resistance/temperature scanner with a 4.3″ touch TFT LCD and up to 90 parallel measurement channels. It combines precise 4-wire resistance measurement (10 μΩ - 200 kΩ, 0.05 % basic accuracy) with programmable temperature measurement (PT100, PT500, analogue) and offers both stand-alone and scan operation.Features
- 4.3″ 24-bit touch TFT LCD (480 × 272 px) with DE/EN GUI
- Up to 90 scan channels (6 plug-in boards with 15 channels each) with synchronised measurement
- Max. Test speed up to 600 measurements/s (6 boards)
- Resistance measurement 10 µΩ-200 kΩ, auto/manual, ≤ 100 mA measuring current
- Temperature measurement PT100/-500 & analogue 0-2 V with compensation
- Measurement modes: stand-alone & scanning; trigger: internal, manual, external, bus, handler, foot switch
- Data logging, one-click screenshot, software upgrade via USB HOST
- Handler interface, RS232, USB host/device, LAN
Applications
- Component tests: resistors, inductors, transformers, relays, solder joints
- Cables & connectors: contact and transition resistances
- Material tests: Thermistors, sensors, metallic foils
- New energy: EV battery connection resistances, testing battery bridges
- Inline test systems with automatic bin sorting
Technical Data
| Model | ![]() TH2518 | ![]() TH2518A |
|---|---|---|
| Measuring parameters | DC resistance, temperature | DC resistance |
| Resistance test range | 10 µΩ - 200 kΩ | 10 µΩ - 200 kΩ |
| Basic accuracy | 0,05 % | 0,05 % |
| Resistance ranges | Auto / 200 mΩ, 2 Ω, 20 Ω, 200 Ω, 2 kΩ, 20 kΩ, 200 kΩ | Auto / 200 mΩ, 2 Ω, 20 Ω, 200 Ω, 2 kΩ, 20 kΩ, 200 kΩ |
| Temperature sensor type | PT100, PT500, analogue (0-2 V) | - |
| Temperature range | -10 °C - 99.9 °C (PT); 0-2 V (analogue) | - |
| Temperature accuracy | 0.3 % Rd ± 0.5 °C (PT); ± 1 % Rd ± 3 mV (analogue) | - |
| Measurement modes | Stand-alone, Scanning | Stand-alone |
| Scan channels | 15/board, up to 6 boards (90 channels) | - |
| Measuring current | ≤ 100 mA | ≤ 100 mA |
| Measuring speed | 100/40/2 Hz (1 board); 600/240/12 Hz (6 boards) | 100/40/2 Hz |
| Temperature compensation | √ | - |
| Test connection | 4-wire | 4-wire |
| Memory | 30 parameter sets | 30 parameter sets |










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