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Metrel MI3123 SMARTEC Earth Tester

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£510.00 £425.00
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The Metrel MI3123 is a multifunctional earth testing instrument that can be used to carry out earth resistance measurements with spikes, a current clamp, two current clamps or carry out specific earth resistance measurements.

It is an ideal product for use in testing main earthing of objects, resistance of earthing rods, lighting systems, soil resistivity for earthing and can even be used in the design stage of earthing systems to ensure everything is correctly installed.

To enable clamp testing the MI3123 can directly interface with either one or two A 1018 and A 1019 clamps (sold separately). It also includes the ability to download information directly from the tester via a RS-232 or USB connection and Metrel's optional A 1290 or A 1291 software packages.

The MI3123 also runs on rechargeable batteries, includes customisable limits with PASS/FAIL led indicators and has a large-size LCD screen which showcases test results.

Metrel MI3123 SMARTEC Earth Tester Key Features

  • Earth spike testing
  • 2-wire and 3-wire
  • Soil resitivity testing
  • Earth resistance testing using clamps
  • Downloadable
  • Help screens
  • Built-in charger
  • Custom limits
  • PASS/FAIL LED indicators
  • Easy to use

Full List of Products Included

  • Metrel MI3123 SMARTEC Earth Tester
  • Soft Hand Strap
  • Test Lead 20m (Green)
  • Test Lead 4.5m (Blue)
  • Test Lead 4.5m (Red)
  • Test Lead 20m (Black)
  • Earth Test Rod (4x)
  • 6 x Rechargeable NiMH Batteries
  • 12V Battery Charging Adapter
  • UK Mains Cable for Charging Adapters
  • Short Instruction Manual
  • Instruction Manual on CD
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Part CodeMI3123

Metrel MI3123 Technical Specifications

Earth Resistance    
Earth resistance 4-wire method and earth resistance one clamp method
Measuring range according to EN61557 is 0.67Ω ÷ 9999Ω
Measuring Range  Resolution   Accuracy 
0 ÷ 19.99Ω 0.01Ω  ±(3% of reading + 3 digits) 
20 ÷ 199.9Ω 0.1Ω ±(3% of reading + 3 digits)
200 ÷ 1999Ω ±5% of reading
2000 ÷ 9999Ω ±10% of reading
Automatic Test of Probe Resistance Yes  
Automatic Test of Voltage Noise Yes  
Open-Terminal Test Voltage 40VAC  
Test Voltage Frequency 125Hz  
Short-Circuit Test Current <20mA  
Low Clamp Current Indication Yes  
Noise Current Indication Yes  
Earth Resistance (Two Clamps Method)    
Measurement Range Resolution Accuracy
0 ÷ 19..99Ω 0.01Ω  ± (10% of reading + 10 digits) 
20 ÷ 30.99Ω 0.1Ω ± (20% of reading)
30.1 ÷ 39.99Ω 0.1Ω ± (30% of reading)
Test Voltage Frequency 125Hz  
Noise Current Indication Yes  
Low Clamp Current Indication Yes  

Further tech specs are available in the attached datasheet.

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