325+ Electricians, Engineers and Energy professionals
trust and use our products.
Meatrol ME440 – Three phase energy logger & analyzer
€1 158.40 excl. VAT
The Meatrol ME440 Kit is a complete, portable three-phase energy logger and power quality analyser. It shows exactly where the power goes in a building or site — and whether your existing supply can take on more load.
Built for facility, operations and energy managers metering their own sites. Equally suited to electricians, energy consultants, and solar installers who measure for clients.
Clamp the flexible Rogowski coils around existing cables or busbars — without switching off the power. Log consumption over days or weeks. Then export a clean report for management, finance, compliance, or planning.
Get all the information you need to make informed decisions and plan backup power, solar power, or energy efficiency projects.
Professional-grade accuracy, at a fraction of the cost of the established brands.
- Complete kit — logger, 4 Rogowski coils, voltage probes, carry case, and free Excel reporting template included
- Installs in minutes around existing cables — no need to switch off the supply
- Logs a true load profile over time: peaks, base load, and overnight consumption
- Full power quality analysis — harmonics, THD, power factor, voltage dips and swells, and waveform capture
- Accuracy verified by calibration certificates — TÜV calibration available
Sold Out – Get notified when it is back in Stock.
Would you like to be notified when this item is back in stock? Then please complete the form below:
This three-phase energy logger is 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.
The results from the energy logging can be used for the following.
Plan capacity and expansion
- Add machines or a new production line — confirm your supply has the headroom before you order equipment.
- Install EV charge points — work out how many your existing connection can support.
- Add heat pumps, HVAC, or other large loads — check available capacity before installation.
- Avoid an unnecessary supply upgrade — or plan one with confidence if the data shows you need it.
Cut energy costs and improve power quality
- Identify cost-saving opportunities from energy efficiency measures.
- Improve a building’s power factor, which is inflating the bill.
- Reduce peak-demand (KVA) charges — monitor what is causing high KVA usage and when.
- Balance loads across phases to prevent overloading one phase.
Size solar, storage and backup systems
- Plan solar PV systems and determine the number of panels needed.
- Plan backup power systems — determine inverter and battery capacity.
- Determine backup generator size requirements.
Only need it for a few weeks?
For a one-off audit, a temporary installation, or a single measurement campaign, you don’t have to buy. Rent the complete ME440 Kit for the period you need — same logger, coils, and support — and get the raw data plus a finished analysis report.
What is in the box
- ME440 Energy Logger
- 4 x Rogowski coils – MRC-24 (600A, 24mm diameter)
- 5 x Voltage sensing leads, with crocodile clamps
- 5 x Magnetic voltage probes
- USB Memory stick – 16GB
- 5V Power supply and 1m cable – Barrel plug
- Carry case to neatly organise the cables and protect the energy logger
- Free Excel data analysis template
Extra Value Added
Please note, we might a bit more expensive than other suppliers, but for that, you get the following:
- Two-year warranty, instead of the standard one-year warranty
- Free Excel data analysis template with one hour of remote support
- Magnetic probes to easily connect to breaker screws instead of the crocodile clamps for the voltage sensing leads
- Power adaptor to easily get power from the voltage leads instead of having to get a plug point close by
- Batteries and memory sticks are included with all kits; there’s no need to search and buy them yourself
- Experienced technical support by phone or WhatsApp
- We are an approved Meatrol repair centre, we have a workshop and carry out repairs quickly in Germany or South Africa, Johannesburg
Current sensing coils
This meter comes with MRC24 600A Rogowski current sensing coils. If you would like to measure larger currents, or larger bus bars, order the following rogowski coils additionally.
ST08 current clamps
Alternatively you can order the ST08 current clamps. This is idea for measuring small current flows below 1 A, but also up to 10A or 20A.
Specifications
| Model | ME440 | ||||
| Product component type | Handheld; poly-phase; data logger; power analyzer | ||||
| Poles description | 3PH4W 3PH3W 1PH2W (L-N); 1PH2W(L-L);1PH3W(L-L-N) | ||||
| Device application | Power analysis Data log | ||||
| Input type | External Rogowski coil External CT(333mV only) | ||||
| Display | 3.5 inch TFT screen display | ||||
| Sampling rate | 8k samples per second | ||||
| Harmonic | 51th in the mean time | ||||
| Weight | 850g (with Accessory 2kgs) | ||||
| Dimensions | L*W*D:21.5*13*6CM | ||||
Product videos
Meter setup training video
Example data file, CSV file format
Example Data CSV file from the ME440 for a 3 phase, 4 wire setup:
Calibration Certificate
Here is an example calibration certificate from the German calibration laboratory TüV.
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.
Frequently Asked Questions
The default password is 1000. If you forgot the custom password you set, then please contact us for the master password to reset it again.
Yes, it comes with 5 voltage sensing leads, 4 current sensing coils, and a USB power supply and cable. The diameter of the current sensing coils is 24mm and it can measure up to 600A, If you want to measure higher currents, then you have to buy larger Rogowski coils, also available here.
The device comes with two 18659 Lithium batteries.
The build in LiPo batteries last 10 hours. We recommend plugin it into mains power if planning to log for longer than 10 hours. Alternatively one could also use a large USB power bank, just make sure it is large enough to last the duration you want to log for. A 10 0000 mAh Power bank will last 3 days in our experience.
Each meter is factory-tested and calibrated. The allowable variance is less than 0.05% Click here to see an example factory meter calibration report. Additionally each meter can be sent for calibration and receive a calibration certificate at additional cost. Click here to see an example meter calibration report.
The ME440 logs to its data to 31GB internal memory. Then you can then download the data to an USB stick.
The metre automatically starts logging data as soon as it’s turned on.
This feature must just be enabled. Watch the following video on how to enable this feature:
To delete data that is currently stored on the meter, do the following.
- Press F4 to go to the SettingRecord screen.
- Press OK to go the the SettingRecordStore screen.
- Press F1 and hold it for 3 seconds, a message will come up asking “Erase MicroSD Card?”
- Pres OK to confirm and delete all data from the internal MicroSD Card.
It is possible that your loads can generate negative reactive energy. Read this article on Wikipedia.
The minimum logging interval of the Mi550 is five seconds. The minimum logging interval of the ME440 and ME435 is one seconds.
On the ME440, the sample rate of the electrical energy measurement chip is 8k samples per second.
- 3PH4W
- 3-phase, 4 wire
- This is the recommended setting for most three-phase installations
- For installations where there is a neutral cable.
- 3PH3W
- 3-phase, 3-wire
- This should only be used for balanced loads like some inverters and motors.
- For installations where there is no neutral cable.
- 1PH2W_LL
- 1-phase, 2-wire
- North-American Split-phase System
- Two live wires (two 120V lines 180 degrees out of phase to get 240V)
- 1PH2W_LN
- 1-phase, 2-wire
- Normal single-phase system for most counties
- One live and a Neutral wire
- 1PH3W_LLN
- 1-phase, 3-wire
- North-American Split-phase System
- Two live and a Neutral wire (120V)
To connect the meter for a single phase setup, connect the phase voltage to phase A (terminal UA) connect the (terminal UN) to neutral and the Earth terminal to Earth.
To measure the current connect the Rogowski coil live wire to Port IA, and the Neutral wire to port IN. Please take care that the Rogowski coils are connected the right way around.
The Wire setting must be set to: 1PH2W_LN
One could measure just the current, and not the voltage, but then one would only have the current values. All other factors, can then not be calculated factors like the power, the power factor, the energy and other aspects. So, it is highly recommended to always measure both current and voltage leads.
The maximum input voltage that the ME440 can handle is 480 VAC, L-N.
THD – yes. The ME440 measures total harmonic distortion for both voltage (UTHD) and current (ITHD), per phase, displayed live on the meter and recorded in the logged data.
Harmonic spectrum – yes, up to the 51st order. The meter measures every individual harmonic from the 2nd to the 51st order, per phase, for both voltage and current. On the display, you can view five selectable harmonic orders at a glance (default 3rd, 5th, 7th, 9th, 11th) and browse the full 2nd–51st list.
Harmonic data logging and download. The detailed harmonic data is stored separately from the basic power quality data. When downloading to a USB stick, you select the data type on the meter: BasicData, HarmonicData, or Basic&HarmonicData. The harmonic download gives you dedicated CSV files – one for voltage harmonics (UTHD plus UHD2–UHD51) and one for current harmonics (ITHD plus IHD2–IHD51), for each phase, at every logging interval (configurable from 1 second). This lets you plot the complete harmonic spectrum over time in Excel and see how individual harmonic orders develop throughout the day, without the harmonic columns cluttering your main data file.
TDD – calculated from the logged data. The meter does not output TDD (Total Demand Distortion) as a native value. However, since TDD is THD referenced to the maximum demand current rather than the fundamental, and the ME440 logs ITHD, current, current demand and peak demand in the same file, TDD can be derived directly from the logged data (TDD = ITHD × I₁/IL). If you need this for an IEEE 519 compliance assessment, contact us – we can help you set up the calculation in the free Excel analysis template included with the meter.
If you also need waveform capture, dip/swell recording, or an odd/even harmonic breakdown, have a look at the Meatrol Mi550.
Meatrol Meter Comparison Table
Not sure which meter to choose? Click here to download a comparison table between the different Meatrol handheld portable loggers.
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.
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? Please contact us:
E-Mail: info at ampx dot co
WhatsApp: +49 175 246 5195
Call: +49 3625 313 9998
AmpX Management
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
E-Mail: info at ampx dot co
WhatsApp: +49 175 246 5195
Call: +49 3625 313 9998
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.
supporting professional energy projects in
Europe and South Africa.
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.
You may also like…
-
€1 360.00 excl. VAT
Related products
-
€1 497.00 excl. VAT -
€8.00 excl. VAT
-
€350.00 excl. VAT
-
€275.00 excl. VAT
-
€179.00 excl. VAT
Join our Newsletter
Stay up to date with the latest product developments and get 5% off your first order.
English (UK) 
Deutsch