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The UNI-T UT572 is an advanced earth resistance tester for 2-, 3- and 4-wire earth resistance and soil resistivity measurements. It also measures disturbance voltage and frequency, with selectable 94Hz/128Hz test frequencies, 20-set data storage and field-ready test accessories.
| Product Type | Advanced Earth Resistance Tester |
|---|---|
| Model | UT572 |
| Test Methods | 2-wire, 3-wire and 4-wire |
| Earth Resistance Ranges | 4Ω, 40Ω, 400Ω, 4kΩ and 40kΩ |
| Earth Resistance Accuracy | ±(3% + 15) on 4Ω range; ±(3% + 5) on 40Ω to 40kΩ ranges |
| Soil Resistivity | ρ = 2 × π × L × Re, based on the measured earth resistance |
| Soil Resistivity Test Distance | 1–40m |
| Disturbance Voltage | 50V DC / 40–500Hz AC |
| Disturbance Voltage Accuracy | ±(3% + 3) |
| Disturbance Frequency | 40–500Hz |
| Disturbance Frequency Accuracy | ±(1% + 2) |
| Test Frequency | 94Hz / 128Hz |
| Display | 4-digit LCD, 125 × 37mm |
| Sampling Time | 5s |
| Data Storage | 20 sets |
| Power Supply | 1.5V LR6 batteries × 8 |
| Auto Power-Off | Approximately 5 minutes |
| Product Dimensions | 210 × 175 × 90mm |
| Net Weight | 1100g |
| Certifications | CE, UKCA |
| Function | Range | Accuracy |
|---|---|---|
| Earth Resistance | 4Ω | ±(3% + 15) |
| Earth Resistance | 40Ω, 400Ω, 4kΩ, 40kΩ | ±(3% + 5) |
| Disturbance Voltage | 50V DC / 40–500Hz AC | ±(3% + 3) |
| Disturbance Frequency | 40–500Hz | ±(1% + 2) |
