Lovato DMG300 expandable multifunction digital multimeter with 128 × 80 pixel graphic LCD, True RMS measurement, 31st-order harmonic analysis and support for EXM expansion modules.
£528.93
The Lovato DMG300 is an expandable multifunction digital multimeter and electrical network analyser designed for comprehensive monitoring of low-voltage, medium-voltage and high-voltage electrical systems. Its compact DIN rail format combines advanced measurement functions, harmonic analysis and flexible expansion capabilities within a four-module housing.
A clear 128 × 80 pixel graphic LCD provides convenient access to voltage, current, power, energy, frequency, power factor, demand and power-quality measurements. True RMS measurement and gapless sampling help deliver dependable readings in industrial networks containing motors, variable speed drives, switching loads and other non-linear equipment.
The DMG300 includes an optical infrared interface for connection to optional Lovato EXM expansion modules. This modular design allows communication ports, digital inputs, digital outputs and analogue functions to be added according to the requirements of the installation, making the instrument suitable for both standalone monitoring and integrated energy-management systems.
The Lovato DMG300 provides detailed visibility of electrical network performance through instantaneous, average, minimum, maximum and maximum-demand measurements. Its harmonic analysis functions help engineers identify waveform distortion caused by variable speed drives, power supplies and other non-linear loads.
Optional EXM modules allow the DMG300 to be adapted for different applications without replacing the base instrument. Depending on the selected module, users can add RS485, Ethernet or other communication options alongside programmable digital and analogue inputs and outputs.
| Manufacturer | Lovato Electric |
|---|---|
| Series | DMG Digital Multimeters |
| Model | DMG300 |
| Product type | Expandable multifunction digital multimeter |
| Installation type | 35 mm DIN rail |
| Housing width | Four DIN modules, 72 mm |
| Display | 128 × 80 pixel graphic LCD |
| Display backlight | White with four grey levels |
| Measurement method | True RMS |
| Auxiliary supply | 100–240 V AC / 110–250 V DC |
| Auxiliary supply frequency | 45–66 Hz |
| Current transformer input | External CT, 1 A or 5 A secondary |
| Voltage inputs | Four |
| Current inputs | Three |
| Active energy accuracy | Class 0.5S, IEC/EN 62053-22 |
| Reactive energy accuracy | Class 2, IEC/EN 62053-23 |
| Harmonic analysis | Up to the 31st harmonic order |
| Sampling frequency | 6400 Hz |
| Integrated communication port | No |
| Expansion interface | Optical infrared interface for EXM modules |
| Expandable | Yes |
| Front protection rating | IP40 |
| Terminal protection rating | IP20 |
| Dimensions (H × W × D) | approximately 90 × 72 × 58 mm |
| HS Code | 90303100 |
The DMG300 is used to measure and analyse electrical parameters including voltage, current, power, energy, frequency, power factor, demand and harmonic distortion.
Yes. The DMG300 includes an optical infrared interface that supports optional Lovato EXM expansion modules for communication, digital I/O and additional functions.
No. The base DMG300 does not include an integrated communication port, but RS485 and other connectivity options can be added using a compatible EXM expansion module.
The instrument is suitable for external current transformers with either a 1 A or 5 A secondary output.
Yes. The DMG300 supports individual harmonic analysis up to the 31st harmonic order, helping users evaluate voltage and current waveform distortion.
Lovato DMG digital multimeters are used by panel builders, electrical engineers and facility managers to provide accurate network monitoring, flexible system integration and dependable energy analysis across industrial and commercial installations.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...