Sonel MMR-640 Low Resistance Meter
INDEX CAT. WMGBMMR640
EAN 5907624028708

Ingress protection: IP 67
Measurement category: CAT III 600 V, CAT IV 300 V
Data transmission: Wi-Fi, LAN, USB
Display: touchscreen, graphic, color, backlit
 

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Description
 

Low resistance within range

Product features

• measurement of very low resistance
• high immunity to disturbances
• easy operation
• big touchscreen
• automatic measurement mode
• autoranging

Application

The MMR-640 meter is designed to measure very low resistance of resistive objects. This product is made to be used in power plants, railways and maintenance companies to measure resistance of:

• breakers, contacts,
• earthing conductors, equipotential bondings,
• welded and soldered connections,
• bolted connections,
• and other resistive objects. MMR-640 can be also utilized on production lines (eg. at the final production control stage).

Device capabilities

The MMR-640 meter provides an innovative combination of a high-performance measuring device with a modern user interface and advanced data management system.

Durable and practical casing

In response to the customers needs the MMR-640 has been designed to operate in difficult environmental conditions. A unique casing with the IP67 ingress protection rating ensures that the device is both waterproof and dustproof.

Easy readout

The MMR-640 meter is equipped with a readable colour touchscreen that, due to its 800 x 480 pixel resolution, provides both high comfort of interacting with the interface and high readability of the measurement results.
 

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Technical data
 

Resistance measurement

Range	Resolution	Test current	Accuracy
0...999.9 μΩ	0.1 μΩ	10 A	±(0.25% m.v. + 2 digits)
1.0000...1.9999 mΩ	0.0001 mΩ	10 A	±(0.25% m.v. + 2 digits)
2.000...19.999 mΩ	0.001 mΩ	10 A	±(0.25% m.v. + 2 digits)
20.00...199.99 mΩ	0.01 mΩ	10 A / 1 A	±(0.25% m.v. + 2 digits)
200.0...999.9 mΩ	0.1 mΩ	1 A / 0.1 A	±(0.25% m.v. + 2 digits)
1.0000...1.9999 Ω	0.0001 Ω	1 A / 0.1 A	±(0.25% m.v. + 2 digits)
2.000...19.999 Ω	0.001 Ω	0.1 A	±(0.25% m.v. + 2 digits)
20.00...199.99 Ω	0.01 Ω	10 mA	±(0.25% m.v. + 2 digits)
200,0...1999.9 Ω	0.1 Ω	1 mA	±(0.25% m.v. + 2 digits)

m.v. - measured value

Weight and dimensions

Parameter	Value
Net weight (kg)	3.6
Package weight (kg)	5.9
Package width (cm)	40.5
Package height (cm)	25
Package length (cm)	30.5