Hotline: 0984.843.683 Email: info@ttech.vn  Zalo: 0984.843.683

Thiết bị đo điện trở đất EM-4058 Tentech

Mã sản phẩm: EM-4058
Sử dụng cho Model:
Hãng SX: Tentech
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Tình trạng

Tình trạng: Còn hàng

Đặt hàng
The EM4058 earth tester is a digital, microprocessor controlled instrument that allows to measure the earth resistance and ground resistivity (using Wenner´s method), as well as to detect parasitic voltages present in the ground. This instrument is suitable to measure earth systems in power substations, industries, distribution networks, etc., according to IEC 61557-5.

Liên Hệ Hỗ Trợ

    • SĐT: 0984 843 683

    • Mail: info@ttech.vn

      • Zalo: 0984.843.683

Thông tin sản phẩm

• Earth resistance measurement

• Ground resistivity (Wenner's method)
• High spurious voltage rejection
• Spurious voltage measurement
• 0.01 Ω resolution
• Up to 20 kΩ resistance range
• Measure with multiples frequencies
  (270 Hz, 570 Hz, 870 Hz, 1170 Hz, 1470 Hz)
• Built-in memory
• USB interface


Operation frequency 
270 Hz (resistance or resistivity measurement) 
570 Hz, 870 Hz, 1170 Hz or 1470 Hz (resistance measurement)
Max. variation: ± 1 Hz (both cases).

Voltmeter 
In the voltmeter function, the equipment operates as a CA conventional voltmeter, making it possible to measure voltages generated by parasitic currents. 

Measurement ranges 
Resistance: 0-20 Ω; 0-200 Ω; 0-2000 Ω y 0-20 kΩ (auto ranging)
Resistivity: 0 - 50 kΩm (autoranging).
Voltage: 0 - 60 V~. 

Accuracy
Resistance and Resistivity measurements:
R ≤ 2 kΩ:± (2% of the measured value ± 2 digits). 
R > 2 kΩ:± (5% of the measured value ± 2 digits). 
Voltage measurement: ± (3% of the measured value ± 2 digits). 

Reading resolution 
0.01 Ω in the resistance measurement.
0.01 Ωm in the resistivity measurement.
0.1 V in the voltage measurement. 

Output current 
The short-circuit current is limited to less than 20.0 mA R.M.S. (according the IEC 61557-5 - 4.5). 

Imunity to spurious voltage interference 
During the R measurement, it allows for the presence of spurious voltage up to 7 V~, with a error < 10%.

Earth resistance of auxiliary rods
In the R measurement it allows Raux up to 50 kΩ with error < 30%. 

Battery status checking 
The battery charge status is verified under normal using conditions.

Advanced features 
Automated detection of abnormal conditions that may cause excessive errors (low battery, too high noise interference, too high test spikes resistance). 

Soil resistivity computing 
When performing soil resistivity measurements, the operator informs to the EM4058 the distance between spikes and the equipment automatically computes soil resistivity using the Wenner full equation. 

Interface 
USB. 


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