Tentech EM-4058 Smart Digital Earth Tester
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Tentech EM-4058 is a microprocessor-controlled earth resistance tester with 0.01 Ω resolution, 20 kΩ range, frequency scan, built-in memory, USB interface, and remote control via Android.
Product details
| Model | EM-4058 |
| Manufacturer | Tentech |
| Category | Ground Resistance Testers |
| Availability | Made to order |
Description
Overview
The Tentech EM-4058 is a microprocessor-controlled earth resistance tester designed for measuring earth systems in power substations, industrial facilities, and distribution networks. It performs earth resistance measurements, ground resistivity analysis using Wenner's method, and parasitic voltage detection, compliant with IEC 61557-5 standards. The instrument automatically selects appropriate measurement ranges and notifies operators of abnormal conditions before measurements begin.
Key Features
- Earth resistance measurement with 0.01 Ω resolution and 20 kΩ range
- Ground resistivity measurement using Wenner's method
- High spurious voltage rejection with parasitic voltage measurement capability
- Selectable test current frequencies: 270 Hz, 570 Hz, 870 Hz, 1170 Hz, 1470 Hz
- Frequency Scan feature automatically measures all frequencies and calculates average result
- Built-in memory for storing measurements and integrated printer
- USB interface for data transfer to computer or data logger
- Remote control via Android device
- Four automatic measurement ranges for precise results in any soil condition
- Portable design with rechargeable battery
Applications
- Earth system measurement in power substations
- Industrial grounding system testing
- Distribution network earth resistance measurement
- Soil resistivity analysis for earthing system design optimization
- Lightning surge behavior analysis using high-frequency measurements
- Interference voltage immunity testing in high-noise environments
Included Accessories
- Test spikes (electrodes)
- Test leads
- Carrying case
- Rechargeable battery
Specifications
| Earth Resistance Range | 0.01 Ω to 20 kΩ |
| Resolution | 0.01 Ω |
| Test Frequencies | 270 Hz, 570 Hz, 870 Hz, 1170 Hz, 1470 Hz |
| Frequency Scan | Yes - automatic multi-frequency measurement |
| Memory Capacity | 20,000 measurements |
| Built-in Printer | Yes |
| USB Interface | Yes |
| Remote Control | Android device via remote interface |
| Measurement Methods | Earth resistance, ground resistivity (Wenner's method), spurious voltage detection |
| Standard Compliance | IEC 61557-5 |
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Tentech EM-4058 Smart Digital Earth Tester
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