Soil Resistivity Tester
The RX-I Soil Resistivity Tester measures resistivity changes during water uptake and swelling of unsaturated expansive soil, wet collapse of loess, and strength development of cement soil. It uses a constant-current source, digital voltage measurement, and probe measurements to relate resistivity indicators to soil structural and mechanical-property changes.
- Model
- RX-I
- Category
- Electrical Testing
Product Description
The RX-I is intended for laboratory study of expansive soil, loess, and composite clay such as cement soil. It tracks resistivity during unsaturated expansive-soil swelling after water uptake, loess wet collapse, and cement-soil strength development, supporting a resistivity-based evaluation of structural change and the relationship between macroscopic mechanical properties and resistivity indicators.
Technical Specifications
| Parameter | Specification |
|---|---|
| Output current | DC 0.01–20 A, continuously adjustable |
| Voltage measurement range | 0–199.99 mV |
| Sensitivity | 10 μA |
| Basic error | ±(0.004% of reading ±0.01% of full scale) |
| Probe spacing | 1.59 ± 0.01 mm |
| Probe diameter | 0.8 mm |
| Drift rate | <0.2% |
| Probe material | Tungsten carbide (WC) |
| Probe force | 3 ± 1 N per probe |
| Power supply | AC 220 V ±10%, 50/60 Hz |
| Power consumption | 12 W |
| Operating temperature | 23 ± 2 °C |
| Relative humidity | ≤65% |
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