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EARTH RESISTIVITY METER AZA0890
The AZA0890 Earth Resistivity Meter from Azalab is a professional-grade instrument designed for accurate measurement of earth resistance, soil resistivity, and earth voltage. Built in compliance with ASTM G57, this meter is essential for electrical grounding design, geotechnical investigations, safety audits, and installation verification.
Engineered for field reliability, the AZA0890 offers multiple resistance ranges, earth voltage detection, and safety-focused low-current testing—making it suitable for both new installations and live system inspections.
Description
Key Features & Benefits
ASTM G57 Compliant
Designed in accordance with ASTM G57 guidelines for soil resistivity testing, ensuring standardized and dependable results for grounding system design.
Wide Earth Resistance Measurement
Selectable resistance ranges allow precise testing across varying soil and grounding conditions:
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0–20 Ω
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0–200 Ω
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0–2000 Ω
Earth Voltage Measurement
Measures earth voltage up to 200V AC (40–500Hz), enabling users to detect live voltage on grounding systems before resistance testing.
Low Test Current (2mA)
Uses a safe 2mA measuring current, preventing nuisance tripping of ELCBs/RCCBs, even during testing on live installations.
Auto Power-Off
Smart energy-saving function automatically switches the unit off 3–5 minutes after test activation.
Data Hold Function
Allows readings to be frozen on the display for easy recording in field conditions.
Portable & Field-Ready
Compact, lightweight design ensures easy handling and transport in industrial, construction, and remote site environments.
Battery Operated
Operates independently without external power—ideal for on-site testing.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | AZA0890 |
| Standard Compliance | ASTM G57 |
| Earth Resistance Ranges | 0–20Ω / 0–200Ω / 0–2000Ω |
| Earth Voltage Range | 0–200V AC (40–500Hz) |
| Measuring Current | 2mA (ELCB safe) |
| Display | Digital LCD |
| Power Supply | Battery operated |
| Auto Power-Off | Yes (3–5 minutes) |
| Data Hold | Yes |
| Safety Rating | IEC 1010, CAT III 200V |
| Calibration | Factory calibrated with test leads |
| Construction | Compact, lightweight housing |
Applications
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Soil resistivity measurement (Wenner method)
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Grounding system design and validation
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Electrical installation inspection
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Lightning protection testing
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Industrial safety audits
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Power distribution maintenance
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Telecom and substation grounding checks
Frequently Asked Questions (FAQ)
Q1: What is ASTM G57 used for?
ASTM G57 provides guidance for measuring soil resistivity using standardized methods essential for grounding system design.
Q2: Can AZA0890 be used on live systems?
Yes. The 2mA test current avoids tripping most earth leakage circuit breakers.
Q3: What voltage range can it measure?
It measures AC earth voltage from 0–200V within 40–500Hz.
Q4: Is recalibration required after purchase?
No immediate recalibration is needed. Annual recalibration is recommended for accuracy assurance.
Q5: Are test leads included?
Yes. The unit is supplied with test leads and delivered factory calibrated.
AZA0890 – Accurate, Safe & Standard-Compliant Earth Resistivity Testing
A dependable Azalab solution for professionals demanding precision, safety, and field reliability.
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