Megger DLRO Hand-Held 2 A Low Resistance Ohmmeter
The Megger DLRO series is a tough handheld range of low resistance ohmmeters designed for fast, reliable micro-ohm measurements in the field. With a simple rotary selector, bright colour display, and visual Difference Meter, the Megger DLRO makes it easy to compare readings against a stored reference so small variations are quickly identified. Built with IP54 protection and active live-circuit safeguards, it is a dependable instrument for field, industrial, and maintenance work.
Colour display of the Megger DLRO2 highlighting the built-in Difference Meter.
How the Difference Meter Speeds Up Testing
- Analogue-style scale shows resistance drift instantly.
- Markers display previous readings, with red markers for noisy results.
- One-touch reference setting for quick benchmarking.
- Overlay of multiple results for easy comparison across tests.
- On-screen noise warnings indicate unstable connections.
- Live percentage difference displayed relative to the stored reference.
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Megger DLRO2 Key Features:
- Visual Difference Meter for quick measurement comparison.
- Use long test leads at 1 A while maintaining test speed.
- Inductive test mode for motors, coils, and transformers.
- Active protection against accidental live connections below 600 V.
- IP54 protection against dust and moisture for outdoor use.
- Safety rated CAT III 600 V and CAT IV 300 V.
- Rotary dial and bright interface for simple operation.
- Selectable uni or bi-directional test modes to conserve power or cancel EMFs.
- Display up to three results on screen, ideal for three-phase systems.
- Noise warning alerts you to unstable test conditions.
- Performs up to 500 tests at 2 A for three seconds per full charge.
Megger DLRO2 vs Megger DLRO2X
- Both Models Include: 2 A handheld micro-ohm measurement, Normal mode, Long-lead mode, Inductive mode, Difference Meter, IP54 enclosure, CAT III 600 V / CAT IV 300 V safety, and protection against live circuits up to 600 V.
- DLRO2X Extra Features: Adds Noise Rejection mode with a Confidence Meter for accurate readings in noisy environments, internal data storage with manual and auto save options, and USB export for asset management.
Megger DLRO2 Modes and Options
- Normal low resistance mode (μΩ) for general testing.
- Fast or Long-lead mode (mΩ) for extended cable testing.
- Inductive mode (μΩ) for accurate readings on motors and transformers.
- Noise Rejection mode (DLRO2X only) for high-interference environments.
Megger DLRO2 Applications
- Aviation and wind energy lightning protection checks using long test leads.
- Rail and tram maintenance, rolling stock joints, and signal circuits.
- Marine power systems, bonding, and cathodic protection testing.
- Oil and gas pipelines for weld bonding and grounding checks.
- Automotive and EV manufacturing for welds, crimp quality, and battery links.
- Cable and component manufacturing for quality control and resistance checks.
- Data centres for busbars, UPS systems, and connection verification.
- Panel and switchgear assembly, commissioning, and maintenance.
- Robotics and general electrical infrastructure.
Megger DLRO2 performing a winding resistance test on an electric motor:
Megger DLRO2 testing switchgear busbar joints:
What Comes with the Megger DLRO2 and DLRO2X
- Megger DLRO2 or DLRO2X 2 A Low Resistance Ohmmeter
- Kelvin clip lead set, 2 m, CAT IV 300 V, 10 A
- Kelvin probe lead set, 2 m, CAT IV 300 V, 10 A
- AC charger and power supply
- Six AA NiMH rechargeable batteries
- USB memory stick with user guide
- Hanging hook and strap
- Soft carry pouch
❓ Frequently Asked Questions (FAQ)
Q1: What is the difference between Megger DLRO2 and Megger DLRO2X?
A. Both Megger DLRO models offer 2 A low resistance testing with the same core modes. The Megger DLRO2X adds a Noise Rejection mode with a Confidence Meter for stable readings in high noise and built-in data storage with USB export.
Q2: Can Megger DLRO be used with very long test leads?
A. Yes. The Long-lead test mode delivers 1 A through extended cable reels while maintaining fast and accurate measurements, ideal for lightning protection testing on wind turbines or aircraft.
Q3: Is the Megger DLRO suitable for inductive loads?
A. Yes. Inductive mode manages charging and discharging safely while measuring motors, transformers, or other inductive components.
Note: Be sure to check the official datasheet before buying, and the user manual before using any test equipment. Need training? Just reach out - we’re happy to help