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Megger DLRO10HD low resistance ohmmeters

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article image Megger DLRO10HD low resistance ohmmeter

Megger  offers a heavy duty range of low resistance ohmmeters that combines rugged construction with accuracy and ease of use.  

Megger DLRO10HD low resistance ohmmeters are suitable for field as well as workshop applications.  

Featuring a 0.1 micro ohm resolution, 0.2% basic accuracy and a dedicated mode for use with inductive loads, the DLRO10HD low resistance ohmmeters are ideal for applications as diverse as checking the integrity of welded joints and verifying the winding resistance in large motors and transformers.  

The DLRO10HD features user selectable high or low power ranges for maximum versatility. The high power < 25W ranges (measuring up to 250 milliohm at 10A , or 2.5 ohm at 1A) are ideal for heating a weakness or charging inductive loads while the low power ranges are power limited to 250mW for applications where it is desirable to avoid heating the item under test.  

Key features of DLRO10HD low resistance ohmmeters:  

  • Internal rechargeable battery; operates from a mains supply if the battery is completely flat
  • When used with optional terminal insulating test leads, rated CATIII, 300 V in line with IEC61010
  • Rotary switch controls convenient to operate even with gloved hands
  • Large backlit LCD display can be easily read from a considerable distance
  • Built into a tough, easy to carry case that provides IP65 protection rating when closed
  • IP54 rating when the instrument is in use and operating from battery power
  • User selectable high or low power ranges for maximum versatility
  • Choice of five test modes
  • Supplied with a set of test leads fitted with high quality duplex hand spikes featuring lights to remotely indicate test completion or inadvertent connection to live supply
  • Test leads with Kelvin clips are also available optionally
Megger DLRO10HD low resistance ohmmeters’ five test modes:   
  • Normal test mode: Instrument verifies continuity of all four connections, and then applies the test current in both forward and reverse directions before displaying the result
  • Automatic mode: Test starts as soon as the probes make contact with the item under test
  • Automatic unidirectional mode: Test current is applied in one direction only, reducing the testing time
  • Continuous mode: Makes repeated measurements at 3-second intervals on the same sample
  • Inductive mode: Optimised for tests on motors, transformers and other inductive loads

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