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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
| General 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. |
| ENVIRONMENT | |
| 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 |
| Plug types | Australia |
| CONNECTIONS | |
| Test terminals | 4 x 4 mm shrouded sockets |
| Battery charger | 2.5 mm DC jack connector |
