PRECISION TEST
Earth Testers
4-Terminal Earth Resistance Tester
ERT-400
Precision earth resistance measurement instrument
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Specifications
Features
Applications
Technical Overview
The ERT-400 measures earth resistance accurately using the 4-terminal method. Essential for grounding system verification and maintenance.
Technical Specifications
| Measurement Range | 0.01-100Ω |
| Accuracy | ±2% |
| Frequency | 50/60 Hz |
Key Features
- 4-terminal method, Auto-ranging, Memory storage, Portable
Applications
Suitable for industrial diagnostics, commissioning, maintenance, and compliance testing.