• - welded and soldered connections, equipotential bonding, earth wire,
  - terminals and connectors, rail welded joints, cables and wires,
  - measurement  4-pole method.
  
• Measurement of inductive object type:
  - coils (motors and transformers), low resistance coils.
• Range selection autoranging or manual (measurement of inductive object type).
• Selectable measurement mode adjusted to object type:
  - for resistive objects - fast mode (3 seconds),
  - for inductive objects - long mode with automatic discharge after measurements (or with lower accuracy - shorter mode).
• Selectable measurement mode adjusted to application:
  - normal mode - after pushing „START” button,
  - automatic mode - since test leads are connected to the object meters automatically starts measurement with dual direction current flow and gives average result - what eliminates eventual DC voltage on tested object,
  - continuous mode - every 3 seconds for resistive objects or continuous measurement for inductive objects.
• Window mode:
  -  this option enables setting an upper and a lower limit between which the average measurement result is bound to appear. The results outside of this range will be indicated by two long audible signals and the symbols.
• MMR-630 is designated not to be effected by interference up to 20mV and to show noises from 20 to 100mV (so in edge conditions even 5 times higher than measured drop of potential).
• Memory store for up to 990 results and a communications facility for  transferring data from the device to a PC.

Electric security:
- type of insulation: double, according to EN 61010-1 and IEC 61557
- measurement category: CAT III 300V acc. to EN 61010-1
- protection class acc. to EN 60529: IP54

Resistance measurement

„m.v.” - measured value.

• Data Sheets 
  
• User Manuals 
  
• Declarations of conformity