Free Delivery Over £249*

Next Day Delivery*

60 Day Returns Guarantee

Megger DLRO2X Low Resistance Ohmmeter

Megger
SKU: MEGGDLRO2X
  • Noise Rejection mode and Confidence Meter
  • Manual or auto save measurements directly to device
  • Difference Meter for quick data comparisons
More Info
In Stock - Available Next Day

Megger DLRO2X Low Resistance Ohmmeter

The Megger DLRO2X Hand-held 2A Low Resistance Ohmmeter is the latest offering from this trusted brand, acting as the bigger brother to the existing DLRO2. This latest model makes several significant improvements to the DLRO2’s specification, notably the addition of a Noise Rejection mode and Confidence Meter. The new model also offers a handful of other useful convenience features including a colour blind friendly visual test limit, compatibility with longer cable reels and integrated data storage.

From aircraft to wind turbines, the DLRO2X is the ideal solution for measuring low resistance values. With its handheld design and compatibility with long-line test leads, this unit is well suited to a vast array of environments. The sizeable screen which displays up to 3 values simultaneously in full colour is highly visible in low-light spaces due its bright backlight. Operational safety and peace of mind is ensured by the CAT III 600 V/CAT IV 300 V rating to IEC61010, in addition to protection from inadvertant connections up to 600V without blowing a fuse.

When testing in an environment with high electrical noise, results may may suffer from reduced reliability. The DLRO2X's Noise Rejection mode assists with this situation. In this test mode, the current is passed continuously and in one direction only. The instrument provides a stream of measurements into the integrated confidence meter, refining the measurement until a stable and accurate result is provided. The DLRO2X also brings the ability to store results directly to an internal memory. Folders can be created to store results for individual assets, with auto save or manual saving possible. Results can be transferred to USB data stick and to an external device (PC) for further analysis.

Test Modes

The DLRO2X Difference Meter function allows for repetitive measurements to be easily compared to reference measurements, showing percentage differences and actual values. The primary test modes include:

Normal resistance mode: User selects maximum test current range up to 2 A and the instrument auto ranges to suit measured resistance.

Fast/long leads test mode: Device settings are optimised for speed and use with very long test leads.

Inductive resistance mode: Tests with test current set to 1 A to speed up the charge time. Test current will be auto ranged up as inductance is charged. Rate of change is monitored, auto stopping when result is stable.

Noise rejection mode: For use in environments with high electrical noise, designed to reduce negative impact on results.

Application Potential

The Megger DLRO2X has a wide array of potential applications. Below, we’ve covered some of the common use cases for this product.

  • Aviation and wind turbine lightning protection testing
  • Rail and tram track joint and infrastructure testing
  • Marine cable laying applications and ship-to-shore bonding
  • Oil and gas pipeline welded joint testing within grounding systems
  • Cable manufacture quality control
  • Data centre installation of main panel, generator and UPS systems
  • Panel/switchgear manufacture
  • Robotics
  • Electrical infrastructure

In summary, the DLRO2X is a strong addition to the range, offering a handful of very useful improvements over the DLRO2. In particular, the Noise Rejection mode and Confidence Meter provide a very benefit to those who may experience reduced result reliability as a result of electrical noise. Integrated data storage is also a useful feature, improving the overall convenience and usability of the device when needing to spend longer periods in the field, completing multiple measurements.

  DLRO2 DLRO2X
CAT III 600 V Rated ✔ ✔
Difference meter ✔ ✔
Displays 3 screen values ✔ ✔
Normal resistance mode ✔ ✔
IP54 rated ✔ ✔
Bidirectional mode or unidirectional mode ✔ ✔
Noise rejection mode ✔ ✔
Full colour LCD screen with backlight ✔ ✔
Active live voltage protection up to 600V ✔ ✔
Fast/long leads test mode ✔ ✔
Inductive resistance mode ✔ ✔
Noise rejection mode   ✔
Confidence meter   ✔
Integrated data storage   ✔
Colour blind friendly
visual test limit		   ✔
Works with new long but lighter Megger cable reels   ✔
Manual & auto save results to USB   ✔

Key Features

  • Noise Rejection mode and Confidence Meter
  • Manual and auto saving measurement saving functionality
  • ’Difference Meter’ for quick data comparisons
  • CAT III 600V/CAT IV 300 rated
  • Use with longer test leads
  • Easy select modes with rotary dial
  • View 3 results on screen at any time
  • Electrical noise warning
  • Bidirectional test mode
  • IP54 rated for outdoor use
  • <600V active protection against inadvertent live connections without blowing a fuse
  • Included high capacity batteries
  • Separate inductive load feature
  • Full colour LCD screen
  • Batteries recharge in 2.5 hours
  • 3 year warranty

What's In The Box?

  • Megger DLRO2X Hand-Held 2A Low Resistance Ohmmeter
  • Quick start guide
  • safety warnings sheet
  • Product warranty and registration
  • 3 year warranty extension card
  • Certificate of test
  • USB memory stick
  • Batteries: six 1.2V NiMH AA 2000 mAHR (fitted)
  • Charger power supply
  • Kelvin clip lead set CAT IV 300, 10 A
  • Kelvin probe lead set CAT IV 300, 10 A
  • Hanging hook and strap
  • Soft pouch
Specification

Physical

  • Dimensions: 228 x 105 x 75mm (8.98 x 4.1 x 2.95 in)
  • Display: Full LCD colour screen with user configurable backlight
  • Weight: 905g

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 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

(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)
  • 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
    - 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
    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 3000m
  • Temperature:
    - Operational range 0 ˚C to 50 ˚C
    - Storage range -20 ˚C to 50 ˚C
  • Humidity:
    - Operational to 95 %
    - Storage to 90 %

Data Storage

  • Maximum number of records: 8 million
  • Maximum ID asset references: 256
  • Maximum test measurements per record: 256 per asset, per day

Power Supply

  • Battery:
    - Rechargeable 6 x HR6 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 Charge Adaptor

  • Mains/line input voltage: 100 to 240 V
  • Mains/line input frequency: 47 to 63 Hz
  • Output: 12 V DC 1.2 A 14.4 W max
  • Type: Travel adaptor/interchangeable plug adaptor
  • Plug types: Australia, USA, Europe and UK plugs

Connections

  • Test terminals: 4 X 4 mm shrouded sockets
  • Data: USB (For firmware updates only), the user may update instrument firmware to latest version themselves
  • Battery charger: 2.5 mm DC jack connector
  1. Megger KC30 Wind Turbine Lightning Protection Kelvin Lead Set (1001-249)
    Megger KC30 Wind Turbine Lightning Protection Kelvin Lead Set (1001-249) SKU: MEGG1001249
    £1,060.00 (ex VAT)
    £1,272.00 (inc VAT)
  2. Megger KC60 Wind Turbine Lightning Protection Kelvin Lead Set (1001-248)
    Megger KC60 Wind Turbine Lightning Protection Kelvin Lead Set (1001-248) SKU: MEGG1001248
    £1,110.00 (ex VAT)
    £1,332.00 (inc VAT)
  3. Megger KC100 Wind Turbine Lightning Protection Kelvin Lead Set (1001-809)
    Megger KC100 Wind Turbine Lightning Protection Kelvin Lead Set (1001-809) SKU: MEGG1001809
    £1,200.00 (ex VAT)
    £1,440.00 (inc VAT)
  4. KC50C Test Lead Reel
    Megger KC50C Test Lead Reel SKU: MEGG1013211
    £539.00 (ex VAT)
    £646.80 (inc VAT)
  5. KC100C Test Lead Reel
    Megger KC100C Test Lead Reel SKU: MEGG1013212
    £595.00 (ex VAT)
    £714.00 (inc VAT)