Megger DLRO2 Low Resistance Ohmmeter

The Megger DLRO2 is a tough and truly hand held 2A low resistance ohmmeter, designed to provide fast, accurate and repeatable measurements even in electrically noisy environments.

The DLRO2 can measure low resistance values across a wide range of applications, from railways and aircraft to industry components. This tough device comes with a brand new ‘difference’ meter that allows repetitive measurements to be easily compared with an initial reference measurement. The difference meter also translates the percentage difference to a needle/pointer movement, making the changes clear to see.

There are three main measurement modes:
Normal resistance (μΩ).
Fast / long test lead (mΩ).
Inductive resistance (μΩ).

The DLRO2 measures low resistance values in applications ranging from railways and aircraft to resistance of components in industry. Any metallic joint can be measured but users must be aware of measurement limitations depending on application. For example, if a cable manufacturer plans to make resistive measurements on a thin wire, a low test current should be selected to prevent heating the wire thereby changing its resistance. This instrument is suited to measuring thick conductors, bonds and quality of welding.

Measurements on electric motors and generators will be inductive and require the user to understand the inductive mode and charging process before a correct result is achieved. Electromagnetic noise induced into the leads can interfere with a reading. A noise icon alerts the user, but does not prevent a measurement. When dissimilar metals are joined a galvanic effect is created. Users should select a bidirectional mode to make sure this effect is cancelled. The instrument measures with current flowing in both directions and averages the result.

FEATURES

New ‘Difference Meter’ for quick data comparisons.
Rotary dial test function selection.
Use long leads at 1 A without compromising test speed.
Unidirectional or bidirectional test options on normal resistance test mode.
Safely test the resistance of inductive loads at 1A.
Secondary display field showing either forward and reverse measurement results.
<600 V active protection against inadvertent live connections without blowing a fuse.
Noisy connection warning.
Test currents selectable from 1mA to 2A.
Capable of 500 measurements from a single charge.
Ideal for outdoor use with protection against dust and moisture to IP54.
Industry standard safety rated at CATIII 600 V/CATIV 300.