Portable Energy Loggers

To measure is to know

Portable Energy Loggers

Three-phase power loggers and analysers are ideal for power quality testing, troubleshooting, logging and generating detailed reports.

  • Identify peak demand.
  • Balance three phase loads.
  • Plan solar power and backup power systems.
  • Verify savings from energy efficiency projects.
  • Verify electricity bills
Power consumption graph

These three-phase portable energy loggers are ideal for the following:

  • Determining the energy usage/load profile of a building’s energy usage over a period of time.
  • Determining a building’s peak power usage.
  • Testing the quality of supply for example voltage dips and harmonic analysis, and establishing if voltage levels are in the acceptable range for PV Inverters.

Energy logging for planning and project approval

Before installing new charge points, heat pumps, or PV system extensions, you need to know how much electrical capacity is actually available at your site — and your grid operator may require a formal load profile before approving the project. Accurate measurement is the foundation: it tells you what is possible, and it gives the grid operator what they need.

What the data gives you:

  • A detailed load profile of your supply, measured over days or weeks.
  • Charge point planning — know how many your existing supply can support before you install.
  • Capacity assessment for heat pumps, PV system extensions, or any new high-load equipment.
  • Submission-ready reports in the format your grid operator expects.

Energy logging for energy efficiency

Energy logging is the foundation of any serious efficiency programme — you cannot reduce what you do not measure. An energy logger gives you the data to identify exactly where, when, and how much energy is being wasted.

What you can do with the data:

  • Identify opportunities for energy savings across the site.
  • Pinpoint waste — when and where energy is being consumed unnecessarily.
  • Quantify total electricity usage as a baseline for improvement.
  • Prioritise the interventions with the highest return on investment.

Energy logging to verify electricity bills

If you suspect your electricity bill does not match your actual consumption, energy logging gives you the proof. A short measurement period is often enough to identify metering errors, incorrect tariff classifications, or peak demand charges that do not reflect real usage.

What you can verify:

  • Total consumption matches what you are being charged for.
  • Peak demand charges (kVA) are calculated correctly.
  • Power factor charges are justified by your equipment loads.

Energy logging for backup power and renewable energy

Before installing solar, batteries, or backup power, you need accurate data on what you actually consume. A logged load profile lets you size the system correctly — avoiding both undersized installations that fail under load and oversized systems that waste capital.

What the data tells you:

  • Determine the inverter and generator size required for reliable backup power.
  • Determine the battery storage capacity required for your specific backup-time needs.
  • Check grid power quality — verify that voltage fluctuations and grid conditions are within range for grid-tied inverters.
  • Identify solar potential — quantify projected savings and self-consumption from a planned installation.
Mi550_TUV_Calibration_2024.pdf

Accurate data – Calibration Certificate

Our meters have been calibrated by the German calibration laboratory TÜV and have met all requirements.

We can also supply a calibration certificate with the meter you buy, at an additional cost. Let us know if this is required when you order.

Here is an example calibration certificate:

Meatrol Meter Comparison Table

Not sure which meter to choose? Click here to download a comparison table between the different Meatrol handheld portable loggers.

portable energy loggers, comparison

Explore our full range of
Meatrol energy loggers

  • MQ41 three phase power quality analyzerMQ41 three phase power quality analyzer
    1 737.00 $
    Details
  • Meatrol Mi550mi550
    1 500.00 $
    Details
  • Meatrol ME440 thee-phase power and energy logger and analyserMeatrol ME440 thee-phase power and energy logger and analyser. Rogowski coils
    1 350.00 $
    Details
  • power quality analyzer
    1 220.00 $
    Details

Request full catalogue of portable energy loggers

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Meter data analysis, visualisation and reporting

We have created an Excel template that can analyse the data and visualise it with graphs. It has the following features and graphs.

  • Maximum power per minute, hour and day
  • Energy usage per minute, hour and day
  • Maximum voltage per minute, hour and day
  • Limit data displayed to a specific day or hour
  • Supports three-phase and single-phase setups

This template and support with importing the data and using the template are included free of charge when purchasing this meter.

The template is very easy to use even for users that is not that familiar with Excel. We have also created step by step instructions document and video.

Click here to find out more.

Warranty

All measurement instruments sold by AmpX are covered by the manufacturer’s warranty (typically 24 months on the main instrument, 12 months on accessories such as test leads, clamps and batteries). Exact terms are stated on the warranty card supplied with the device.

What you get at AmpX:

  • Warranty handled locally in Germany and South Africa — no overseas returns required
  • 30-day no-questions-asked return policy
  • Local spare parts and repair service for selected brands, like Meatrol.
  • Direct technical contact by phone, email or WhatsApp for any warranty issue

Warranty issue? Email info at ampx.co or WhatsApp
Germany: +49 175 246 5195
South Africa: +27 82 940 1858

AmpX Management

warranty 2 years

Technical support

If you have any difficulty with the meter setup, installation, data analysis, or anything else, we will gladly support you.

Please contact our technical support department for technical support by Email info at ampx.co or WhatsApp:
Germany: +49 175 246 5195
South Africa: +27 82 940 1858

AmpX Technical Support

Free Demonstration

We can offer you a free demonstration of our energy meters at our premises or within 100 km. If further away, we will need to charge for our travel expenses.

Alternatively we can also do an online video consultation and demonstration.

Click here to request a demonstration if 100 km from our address.

Click here to schedule an online video call and demonstration.

AmpX Demonstration

Why buy at AmpX

  • Local warranty support, we have offices and warehouses in Germany and South Africa.
  • Local parts and repairs, we keep stock of parts and can repair equipment if required.
  • Quick delivery, we only sell products that are in stock. Once we receive payment, goods are delivered within one week.
  • Specialist support, we specialise in energy logging and reporting. If you have any questions, we are willing and able to support you. If you need assistance with meter setup, installation, data download, or data analysis, we can support you. Access to experienced electrical engineers by phone, WhatsApp and email.
  • Peace of mind, you can return any product within 30 days, no questions asked.
  • 2-year warranty, one additional year to the normal one year manufacturers warranty.
  • Additional value, we might not be the cheapest, but we provide additional value above and beyond just delivering a product.
  • Get the expertise and ongoing support that large online marketplaces can’t provide.
AmpX team at industry trade fairs — supporting professional energy projects in Europe and South Africa.
AmpX team at industry trade fairs —
supporting professional energy projects in
Europe and South Africa.

Explore our range of Meatrol
Portable Energy Loggers

  • MQ41 three phase power quality analyzerMQ41 three phase power quality analyzer
    1 737.00 $
    Details
  • Meatrol Mi550mi550
    1 500.00 $
    Details
  • Meatrol ME440 thee-phase power and energy logger and analyserMeatrol ME440 thee-phase power and energy logger and analyser. Rogowski coils
    1 350.00 $
    Details
  • power quality analyzer
    1 220.00 $
    Details