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Sonel's MMR-650 is a self-contained, portable solution for measuring very low resistances on both resistive and inductive objects such as welded and soldered connections, equipotential bondings, earthing conductors, contacts, bolted connections, windings of motors and power transformers and other objects which fall under this classification.
This low resistance ohmmeter can be used by many different users, including those from power plants, railway and maintenance companies. Thanks to its portable, lightweight design, the MMR-650 is excellent for taking on-site and can be easily carried in the hands or placed down on a surface when measuring.
The MMR-650 performs precision 4-wire measurements of resistance up to 1999.9Ω with tst current of up to 10A. It is designed for measuring extremely low resistances, with the lowest range being from 0 to 999.9μΩ with 0.1μΩ resolution. To ensure accuracy, the Sonel MMR-650 ohmmeter also calculates the temperature of the item under load and can factor these values into measurements (automatic temperature compensation).
Configuring measurements and settings is simple with the MMR-650 - this ohmmeter includes a built-in touchscreen with inuitive user interface for quick access to the functions you need. It can connect to an optional printer for in-the-field result printing and also includes USB and WiFi connection options for interfacing with a PC to view back results (software included as standard with the meter).
As they are made for on-site use, Sonel MMR-650 units come built-inside their own robust, shock-resistant casing with IP54 rating with the lid open and IP67 waterproofing with the lid closed. The meter can be powered either by built-in rechargeable batteries or alternatively by using a mains adapter.
|0 to 999.9μΩ||0,1μΩ||10A (20mV)||±(0.25% + 2 digits)|
|1.0000 to 1.9999mΩ||0.0001mΩ|
|2.000 to 19.999mΩ||0.001mΩ||10A (200mV)|
|20.00 to 199.9mΩ||0.01mΩ||10A/1A (2V/200mV)|
|200.0 to 999.9mΩ||0.1mΩ||1A / 0.1A (2V / 200mV)|
|1.0000 to 1.9999Ω||0.0001Ω|
|2.000 to 19.999Ω||0.001Ω||0.1A (2V)|
|20.00 to 199.99Ω||0.01Ω||10mA (2V)|
|200.0 to 1999.9Ω||0.1Ω||1mA (2V)|
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