The DLRO2 2 A Low resistance ohmmeter is a handheld instrument designed to give you 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 insunsulation resistance testers.


The DLRO2 can measure low resistance values across a wide range of applications, including railways, aircraft, and 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. 


If your applications require long test leads, then the DLRO2 can provide this without compromising test speed or safety. It has a dedicated long lead test to optimise the output, and this long test lead function is able to provide up to 1 A of test current into 4 ohms resistance. The DLRO2, with its optional cable reel test leads, is therefore ideal for testing wind turbine and avionic lightning protection applications. 

Test Current Output @ Normal resistance test mode

Current ranges: 2 A, 1 A, 100 mA, 10 mA, and 1 mA

Maximum compliance output voltage: 3.24 V (1 A mode) 2.2 V (2 A mode)          

Accuracy

Normal and inductive mode: ±10 %

Long lead test mode: +10 % -0 %

at all battery conditions except with low battery indication


Low Resistance Measurement:

Overall resistance range: 1μΩ – 2000Ω

Max resistance across C terminals: 2 A with up to 1.1 Ω total resistance and 1 A with up to 3.2 Ω total resistance.

Basic accuracy: 

Bi-directional test current mode: ±1% ±2 digits.

Uni-directional test current mode: ±1% ±10 digits.

Inductive mode or unidirectional mode will introduce an undefined error if an external EMF is present.

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