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| Brand | ROOKO |
|---|---|
| Model | FT-300A Series |
| Measurement Principle | Four-Terminal (Kelvin) Method with Constant Current Source |
| Resistance Range | 10⁻⁸ Ω to 2×10⁷ Ω (FT-320 variant supports 0–10 A high-current output) |
| Resistance Accuracy | ≤ ±0.3% of reading |
| Voltage Resolution | 0.1 µV |
| Temperature Compensation | Built-in, automatic |
| Display | Backlit LCD with bilingual (English/Chinese) interface |
| Data Output | USB interface for optional PC software |
| Compliance | Designed for ISO/IEC 17025-aligned lab environments |
| Brand | ROOKO |
|---|---|
| Model | FT-305 |
| Origin | Zhejiang, China |
| Impedance Range | 10³–10¹⁷ Ω |
| Test Voltage | 0–1000 V (adjustable) |
| Accuracy | ±1% for <1 GΩ, ±20% for ≥10 TΩ |
| Power Consumption | 5 W |
| Interface | USB + RS-232 |
| Operation Modes | Local LCD/Keypad & PC Software Control |
| Compliance | Designed for ASTM D257, IEC 62631-3-1, GB/T 1410 |
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