Metrel MI3123 SMARTEC Earth Resistance Tester

Metrel

£570.57 / £684.68 incl VAT

⚡ Earth spike testing for accurate resistance measurements.
⚡ Supports 2-wire and 3-wire earth resistance measurement configurations.
⚡ Capability to perform soil resistivity testing for earthing applications.
⚡ Downloadable test results via RS-232 or USB connections.
⚡ Customizable limits with PASS/FAIL LED indicators for quick result assessments.
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Description

Metrel MI3123 SMARTEC Earth Resistance Tester

Product Description:

The Metrel MI3123 SMARTEC Earth Resistance Tester is a versatile and multifunctional instrument designed for accurate earth resistance measurements in a variety of testing scenarios. Ideal for testing main earthing systems, earthing rods, lighting systems, and soil resistivity for earthing, the MI3123 is suitable for both installation and maintenance applications. This device can also be used in the design phase of earthing systems to ensure proper installation and functionality. With the capability to perform earth resistance testing using spikes, clamps, or two current clamps, the MI3123 offers flexibility and precision. It also supports data downloading via RS-232 or USB connections and includes Metrel’s optional A 1290 or A 1291 software packages for enhanced data management. The tester features customizable limits with PASS/FAIL LED indicators and operates on rechargeable batteries, making it both user-friendly and efficient.

Key Features:

  • Earth spike testing for accurate resistance measurements.
  • Supports 2-wire and 3-wire earth resistance measurement configurations.
  • Soil resistivity testing to assess the quality of earthing installations.
  • Clamp-based earth resistance testing when paired with A 1018 or A 1019 clamps (sold separately).
  • Capability to download test results via RS-232 or USB connections for easy data transfer.
  • Customizable limits for specific test parameters with PASS/FAIL LED indicators for quick results.
  • Large LCD screen displaying test results clearly for easy reading.
  • Rechargeable NiMH batteries for reliable and cost-effective operation.
  • User-friendly interface for ease of operation during field testing.

What’s Included:

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

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 ÷ 19.99Ω0.01Ω ±(3% of reading 3 digits)
20 ÷ 199.9Ω0.1Ω±(3% of reading 3 digits)
200 ÷ 1999Ω±5% of reading
2000 ÷ 9999Ω±10% of reading
Automatic Test of Probe ResistanceYes
Automatic Test of Voltage NoiseYes
Open-Terminal Test Voltage40VAC
Test Voltage Frequency125Hz
Short-Circuit Test Current<20mA
Low Clamp Current IndicationYes
Noise Current IndicationYes
Earth Resistance (Two Clamps Method)
Measurement RangeResolutionAccuracy
0 ÷ 19..99Ω0.01Ω ± (10% of reading 10 digits)
20 ÷ 30.99Ω0.1Ω± (20% of reading)
30.1 ÷ 39.99Ω0.1Ω± (30% of reading)
Test Voltage Frequency125Hz
Noise Current IndicationYes
Low Clamp Current IndicationYes
  • 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

🚚 Testersmans Shipping Policy

Free Mainland GB Delivery Over £150

We offer free delivery on most mainland Great Britain orders over £150 (ex VAT).
This applies across England, Wales, and most of Scotland, excluding certain remote or offshore postcodes.

If your order total falls just short of £150, or you’re a returning customer, feel free to contact us — we may be able to offer a discount code or delivery workaround.
📞 01945 738112 | ✉️ sales@testermans.co.uk


📦 UK Delivery Options

We work with both Royal Mail and DHL to offer reliable and flexible delivery across the UK:

  • Royal Mail – Best suited for lighter parcels and for customers in remote regions, including the Highlands, Islands, and Northern Ireland.
  • DHL – Ideal for most mainland UK orders, providing fast, tracked delivery and excellent reliability for time-sensitive shipments.

Our checkout system automatically displays the available delivery services for your postcode and order weight, ensuring you always see the most suitable options.

Note: Heavy, bulky, or freight-only orders will be charged separately.
Our website is designed for quick, transactional purchases rather than bulk or palletised orders.
Please contact us in advance for a tailored freight quotation if your order falls into this category.


⏱ Dispatch & Delivery Timing

We aim to dispatch all in-stock orders promptly, but delivery depends on both when you order and which service you select.

  • UK orders: placed by 2:00 PM Monday–Friday are usually dispatched the same day.
  • International orders: placed by 2:00 PM Monday–Thursday are usually dispatched the same day.

Orders placed after these times are processed the next working day. This means delivery may occur the following day or later, depending on the courier and service selected.

Once dispatched, your chosen delivery service determines how quickly your parcel arrives:

  • Standard services We use Royal Mail Tracked 24 or DHL Parcel as our ‘Standard’ services. They are not guaranteed to arrive next working day.
  • Premium services (e.g. Royal Mail Special Delivery or DHL by Noon) offer guaranteed delivery windows.

If your order is time-sensitive, we strongly recommend choosing a guaranteed service or contacting us before ordering to confirm availability.

Please note: For logistical reasons, we may occasionally adjust the delivery method selected at checkout. For example, smaller items may be better suited to letterbox-friendly packaging or may be at greater risk of delay or loss via certain services. We actively monitor courier and postal service disruptions—including strikes and delays—and may modify shipping arrangements to help ensure timely and secure delivery.


📅 Busy Periods & Delays

We always aim to dispatch promptly, but delivery times may be affected by:

  • Seasonal demand (e.g. Christmas, bank holidays, or industry shutdowns)
  • Courier network delays outside our control
  • Supplier lead times or calibration requirements for certain equipment

If your delivery is time-critical, please contact us before ordering so we can confirm stock and courier availability.


🌍 International Shipping

We ship worldwide using UPS Express Saver® and other trusted global courier partners. All international shipments are tracked and generally dispatched Monday to Thursday to ensure smooth customs clearance and transit.

Estimated delivery times:

  • Europe: 1–2 working days
  • North America: 2–3 working days
  • Asia-Pacific & Rest of World: 3–5 working days

Delivery times vary depending on location, customs clearance, and local courier performance.


💰 Taxes, Customs & Import Duties

International customers are responsible for any applicable taxes, customs charges, or import duties.
These are not included in our product or shipping prices.

Your courier will typically provide a secure payment link for any import charges once your parcel reaches customs.
If import fees are refused and the parcel is returned, we will issue a refund minus all incurred shipping and return costs.


📍 Using Your Own Courier

If you would prefer to arrange collection via your own courier (UK or international), please contact us before placing your order to coordinate collection from our Wisbech warehouse.


📝 Important Notes

  • Please ensure your delivery address and contact number are correct at checkout.
  • Undelivered parcels may be returned to us after a short holding period.
  • Redelivery or return fees may apply, even if your order originally qualified for free delivery.
  • By placing an order, you confirm your understanding and acceptance of this policy.

Additional information

Weight750 g