Megger DLRO2 Ducter Low Resistance Ohmmeter - 2 Amp with test leads

Megger DLRO2 Ducter Low Resistance Ohmmeter - 2 Amp with test leads

The DLRO2 is a tough, hand-held 2 Amp low resistance ohmmeter. It’s designed to provide fast, accurate, repeatable measurements, even in electrically noisy locations. The DLRO2 is the latest in a long line of instruments to proudly display the Ducter™ brand, the Ducter™ testers being as well-known and relied upon as Megger insulation resistance testers.

The DLRO2 is also equipped with a new innovative feature called a ‘difference’ meter. This allows repetitive measurements to be easily compared with an initial reference measurement. The difference meter translates percentage difference to a needle/pointer movement to make it visually easy to see change.

Three main test modes...

Normal Resistance mode:

Gives the most flexibility. The user can set any maximum test current range up to 2 A and the instrument will auto range to suit the measured resistance up to that value. Useful if the test piece has a limit to the current it can withstand. The user has full control of the instrument’s test features which is suitable for many applications, as listed above.

Fast/long test leads mode:

Only has one user option, which is manual/auto. ‘Manual’ starts the test when the TEST button is pressed, ‘auto’ starts the test automatically when the instrument detects continuity. In this mode, the instrument settings are optimized for speed and, if needed, the use of very long test leads. The test current is only in one direction for speed, 1 A and above, resistance is only displayed in mΩ.

This test mode is ideal for many applications but is focused on applications where: The user is not technically trained. Use is simple, there are no settings to change. Where test procedures need to be very simple, “switch on, select this range and press TEST” for example. The required minimum test current will be 1 A. The measurement will only be in mΩ. Non-technical users can simply read a number and compare it with a predetermined value. May need the use of very long test leads.

Example applications include: Wind turbine lightning protection (wing tip to ground at base resistance); Subsea cable laying, checking cable resistance and ground connections; Manufacturing, including cable resistance, large cable looms or assemblies etc.

Inductive resistance mode:

Tests with the test current set to 1 A to speed up the charge time. The test current will be auto ranged up as the inductance is charged. Additional convenience is added with a clever ‘auto stop’ feature. The instrument will monitor the rate of change and automatically stop the test as soon as the result is stable.

Example applications include: Electric motors, small to medium in size, including railway traction motor stator winding resistance; Small power distribution transformers; Continuity detection at less than 2000 Ω