SONEL MMR-650 Low Resistance Meter

The Sonel MMR-650 Low Resistance Meter is a state-of-the-art device designed for precision measurement of very low resistances in both resistive and inductive objects. Ideal for applications such as power plants, railways, and maintenance companies, it effectively measures welded and soldered connections, equipotential bondings, earthing conductors, motor windings, power transformers, and more.

With its innovative features, such as a high-performance measurement system, wireless data transmission, and extensive data management capabilities, the MMR-650 simplifies and enhances everyday tasks. Its ability to print labels, utilise 2D codes for identifying test items, and perform a wide range of measurements ensures unparalleled efficiency and reliability.

Need dependable equipment for your next project? Hire now to enjoy fast delivery, flexible rental options, and expert support every step of the way. Get the right products when you need them. Secure your rental today on 1300 024 473.

• Fast Charging: Li-Ion battery recharges in just 3.5 hours.
• Long Battery Life: Over 700 10 Amp tests per charge.
• High Accuracy: Measurements from 0.1µΩ to 2,000Ω with ±0.25% accuracy.
• Advanced Functions: Built-in back EMF discharge, demagnetisation, and temperature compensation.
• Touch Screen Interface: Full-colour, smartphone-style touch control.
• Comprehensive Connectivity: USB, Wi-Fi, and optional LAN communication.
• Durable Design: Protection grade IP67 (lid closed) and reliable performance in tough environments.

Measurement

Ranges: 1000µΩ, 2, 20, 200, 1000mΩ, 2, 20, 200, 2000Ω

Resolution: 0.1µΩ to 0.1Ω

Accuracy: ±0.25% reading +2 digits

Measurement time – resistive: 3s

Measurement time – inductive: 5s or greater

Protection from external voltage: 600V AC for 10s

Communication: USB, WiFi & optional LAN

Memory: 990 measurements in 10 banks of 99

Power Supply

Battery: 7.2V, 8.8Ah Li-Ion

AC Supply/charger: 90-265V, 50Hz

Battery charging time: 3.5 hours

Number of 10A tests per charge: 700-800

Auto Off: User-definable from 5 to 45 minutes or continuous

General

Measurement Category: Cat 3, 600V to IEC 61010

User interface: 800 x 400 Colour TFT graphical display

Protection grade: IP67 lid closed, IP54 lid open, IP40 lid open and mains-powered

Working temperature: -10 to +50°C

Relative humidity: 40 – 60%

• Improve operational safety with precise resistance measurements.
• Save time with a streamlined, user-friendly interface.
• Ensure high-quality testing at industrial, railway, and power plant sites.
• Access features like wireless data transfer and intuitive 2D code integration.
• Enjoy flexibility with a rechargeable Li-Ion battery or mains power operation.

• Power plants — In power plants, the MMR-650 is indispensable for ensuring the efficient operation and safety of electrical systems. It precisely measures low resistances in transformers and conductors, aiding in effective energy distribution and the maintenance of system reliability.
• Railway systems — This meter is vital in maintaining safe and efficient operations in railway infrastructures by accurately assessing the resistance of rail bonds and electrical connections. This precise measurement is vital for the smooth functioning of railway electrical systems, ensuring safety and operational efficiency in the rail network.
• Industrial maintenance — The MMR-650 is crucial for routine checks and troubleshooting in industrial facilities because it helps evaluate the integrity of connections and earth bonds. This helps in preventing equipment failure, ensuring operational safety and maintaining continuous production.
• Quality control in manufacturing — In the manufacturing sector, especially in final-stage quality control, the MMR-650 verifies if products meet electrical standards. Its precise resistance measurements can confirm product quality, enhancing overall manufacturing excellence and ensuring the reliability of electrical components before they reach the market.
• Electrical system installations — The meter is essential for gauging the integrity of new electrical installations, including earthing systems and bonding connections. It can help a professional certify if these installations meet safety standards and function optimally.