The MEGGER DLRO2 Low Resistance Ohmmeter 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.
If your applications require long test leads, then the Megger 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 Megger DLRO2, with its optional cable reel test leads, is therefore ideal for testing wind turbine and avionic lightning protection applications.
MEGGER DLRO2 Specifications
|PHYSICAL Dimensions||8.98 x 4.1 x 2.95 in. (228 x 105 x 75 mm)|
|Display||Full LCD color screen with user configurable backlight|
|Weight||32 oz (905 grams)|
|SAFETY AND ELECTRICAL PROTECTION|
|Safety rating||CATIII 600 V / CATIV 300 V to EN 61010, IEC 61010-031 : 2015, IEC 61010-030
Safety category rating valid to altitude of 9842 ft (3000 m)
|Live voltage||Active live voltage protection to 600 V between any test terminals without blowing a fuse. Live voltage warning on display and audible when >5 V is applied between any test terminals. Fuse protected to 1000 V, fuses are not user changeable.|
|TEST CURRENT OUTPUT|
|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)|
|Current output accuracy||Normal and inductive mode: ±10 % Long lead test mode: +10 % -0% at all battery conditions except with low battery indication.|
|Thermal EMF/Seebeck effect compensation||Yes, average of forward and reverse test current measurements|
|LOW RESISTANCE MEASUREMENT|
|Resistance measurement test modes||Normal test mode, fast mΩ/long test lead mode and inductive test mode (resistance of inductive loads).|
|Overall resistance range||1 μΩ – 2000 Ω|
|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.|
|Noise immunity||Less than 1% ±20 digits additional error with 80 mV peak 50/60 Hz with on screen noise limit indicator.
Less than 1% ±20 digits additional error with 80 mV peak 400 Hz with on screen noise limit indicator.
|EMC||IEC61326-1, industrial specification IEC61326-2-2|
|Dust and moisture ingress||IP54 to IEC60529 in use|
|Altitude||Operational to 9842 ft (3000 m)|
|Temperature||Operational range 32º F to 122º F (0 ºC to 50 ºC)
Storage range -4º F to +122º F (-20 ºC to 50 ºC)
|Humidity||Operational to 95% Storage to 90%|
|Power Supply||Rechargeable 6 x AA NiMH batteries with built-in fast charge (also has the ability to use non-rechargeable alkaline AA batteries (LR6)|
|Battery charge time||< 4 hours|
|Battery life||>1000 bi-directional tests at 2 A auto into a 1 Ω load|
|BATTERY CHARGER ADAPTOR|
|Line input voltage||100 to 240 V|
|Line input frequency||50 to 60 Hz|
|Output||12 V DC 1.2 A 14.4 W max|
|Type||Travel adaptor/interchangeable plug adaptor|
|Test terminals||4 x 4 mm shrouded sockets|
|Battery charger||2.5 mm DC jack connector|