Not Sure About What DLRO to Get? Check out DLROs from Raytech

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Conductors must have extremely low resistance to efficiently carry current. Conductors especially the junctions are prone to degradation because of the constant exposure to the elements and stress. It is important to carry out tests regularly to ensure that the conductor junctions are in good condition. Corrosion, moisture and mechanical weakening can increase the junction resistance and cause problems like localized heating, power loss and eventual failure. To help measure the resistance of conductors, a DLRO or MicroOhmmeter is used. It measures resistance in a different way compared to your ordinary Ohmmeter. This device has a special Kelvin Bridge input that allows accurate measurement of extremely low resistance without the lead resistance affecting the results. 

Raytech offers a line of MicroOhmmeters that are accurate and lightweight. These are the Micro Jr and Micro Jr II. These DLROs can put out 10 Amperes which allows them to measure resistance from 0.1 μΩ up to 400 kΩ. Here are the other features of these MicroOhmmeters.

Raytech Micro Jr

  •        Selectable current ranges:

o   0.001 Ampere

o   0.01 Ampere

o   0.1 Ampere

o   1 Ampere

o   10 Amperes

  •        Rugged construction
  •        Back-lit LCD display
  •        Microprocessor controlled for automated and accurate operation
  •        Operates on rechargeable batteries
  •        Automatic measurement and saving of results
  •        Continuous measurement mode
  •        Can calibrate itself
  •        Internal storage that can store 2,000 results
  •        Onboard thermal printer
  •        Auto polarity reversal
  •        RS232 port
  •        Parallel port for printer connection
  •        Optional external attachment to increase output to 100 Amperes
  •        4 digits resolution with an accuracy of ±0.1% Rdg
  •        Device comes with the following accessories:

o   Kelvin probes

o   Power supply cord

o   Lead bag

o   Manual

Raytech Micro Jr II

  •        Selectable current ranges:

o   0.001 Ampere

o   0.01 Ampere

o   0.1 Ampere

o   1 Ampere

o   10 Amperes

  •        Rugged construction
  •        Back-lit LCD display
  •        Microprocessor controlled for automated and accurate operation
  •        Operates on rechargeable batteries
  •        Automatic measurement and saving of results
  •        Continuous measurement mode
  •        Can calibrate itself
  •        Internal storage that can store 2,000 results
  •        Onboard thermal printer
  •        Auto polarity reversal
  •        RS232 port
  •        Optional external attachment to increase output to 100 Amperes
  •        5 digits resolution with an accuracy of ±0.1% Rdg
  •        Device comes with the following accessories:

o   Kelvin probes

o   Ground cable

o   Paper rolls

o   Power Supply

o   Power supply cord

o   Lead bag

o   Manual

Raytech offers MicroOhmmeters that are suitable for field and industrial applications. These meters are lightweight, compact and durable enough to tolerate harsh conditions. Knowing the differences of the features will allow you to choose the best tester for the intended application. If you are looking for basic DLRO functionality, consider getting the Raytech Micro Jr. However, if you need a more precise meter with added safety, consider getting the Raytech Micro Jr II. 

For your electrical test equipment needs, consider getting tools from Protec Equipment Resources. You have the option to rent, lease or buy equipment depending on your needs. Our inventory offers equipment ranging from low power multimeters to high voltage testers. We carry a wide selection of equipment from trusted brands like Raytech, GE, ABB, Fluke and Metrel Test Equipment. Please call us at 1-866-352-5550 for assistance in choosing the best equipment acquisition option and for a rental quote.