Megger DLRO100 Portable Micro-Ohmeter Range
- A portable, accurate test system for low resistance measurements
The Megger DLRO100 Portable Micro-Ohmeter is a rugged and highly accurate instrument designed for professionals who need fast, reliable low resistance measurements in the field. With a powerful 100 A output, advanced safety features, and a lightweight build, the DLRO100 delivers dependable results for utilities, manufacturers, and transport industries.
Building on Megger’s century of expertise in ducter testing, this range of Megger Micro-Ohmeters ensures accuracy, portability, and ease of use in even the harshest environments.
Why Choose the Megger DLRO100?
- True Portability – At just 7.9 kg, the DLRO100 is easy to carry, with a Li-ion battery providing up to 200 tests per charge.
- High Accuracy – Measures from 0.1 μΩ to 1.999 Ω with 0.1 μΩ resolution.
- Safe and Rugged – CAT IV 600 V AC / 500 V DC rating, IP54 protection (lid open) and IP65 (lid closed).
- Easy Operation – Clear backlit LCD, rotary controls, and three main test modes: Manual, Auto, and Continuous.
- Flexible Options – Available in three models: the Megger DLRO100EB, Megger DLRO100XB, and Megger DLRO100HB.
The Control Panel:
- Display clearly showing large digits for test results and visible in all light conditions
- Single button to save test results and to automatically save in auto mode
- IP54 for protection against dust and rain during testing
- Clearly visible C and P LED’s showing continuity of current and potential connections
- Smooth DC Output on C1 and C2 terminals
- High noise immunity on P1 and P2 terminals
- CAT IV 600 V AC / 500 DV safety rating on all terminals
- DualGroundTM capability with the DC clamp
- Quick and easy rotary switch selection of 10 A, 50 A, 100 A tests – no configuration required
- User configurable custom test
- Adjustable:
- Current ramp
- Duration of test
- Output current
- Rotary switch selection of view, download and delete test results
- Simple navigation of setup and stored results
- Rotary switch selection of test modes and off position
- USB & Bluetooth for communications
- Back light – for low light conditions
Applications:
The Megger DLRO100 Portable Micro-Ohmeter is used worldwide for:
- Utilities and Contractors – Switchgear, breaker contacts, busbar and cable joints, lightning conductor bonding.
- Manufacturing – Testing switchgear, breakers, welded joints, and production cables.
- Transport and Aerospace – Railway ground connections, conductor rails, aircraft bonding and static discharge systems.
Whenever low resistance measurement is critical, the DLRO100 provides precision and reliability.
DLRO100 Model Variants
- Megger DLRO100EB – The entry-level model, offering essential 100 A testing for straightforward applications.
- Megger DLRO100XB – Adds internal storage and USB connectivity for saving and transferring up to 220 results.
- Megger DLRO100HB – The premium version, including USB, Bluetooth®, remote operation, and asset tagging for advanced data handling.
Technical Highlights:
- Range: 0.1 μΩ – 1.999 Ω
- Current: 10 A to 100 A (up to 110 A adjustable)
- Accuracy: ± (0.2% + 0.2 μΩ) typical
- Battery: 200 single tests or two continuous 10-minute runs
- Charge Time: 2.5 hours
- Weight: 7.9 kg with battery
| Features | EB | XB | HB | Benefits |
CAT IV 600 V AC / 500 V DC up to 2000 m
CAT IV 300 V up to 4000 m | ✓ | ✓ | ✓ | On all test terminals for safe operation |
| Lightweight 100 A battery powered unit | ✓ | ✓ | ✓ | Easily portable – 7.9 kg (17 lbs) with battery |
| High noise immunity | ✓ | ✓ | ✓ | For stable readings in noisy environments |
| Smooth DC Output | ✓ | ✓ | ✓ | Circuit breaker testing |
| IP54 lid open / IP65 lid closed | ✓ | ✓ | ✓ | Protection against ingress during operation (lid open) and storage (lid closed) |
| Li-ion battery | ✓ | ✓ | ✓ | Always ready to test with a Li-ion fast charge battery – 2.5 hours from fully discharged
Works from an AC supply if the battery is fully discharged
Battery capacity: 200 single tests or up to 2×10 minute continuous 100 A output for extended use |
| 100A Manual, Auto and Continuous test | ✓ | ✓ | ✓ | Quick selection of test modes for different applications with 4-terminal measurement |
| Custom test | ✓ | ✓ | ✓ | Adjustable current 10–110 A
Ramp rates configurable from 0.5 s up to 30 s
Configurable test duration for flexibility |
| Range and test mode rotary switches | ✓ | ✓ | ✓ | Quick and easy selection of current ranges and modes |
| Ultra-tough outer case construction | ✓ | ✓ | ✓ | Designed for demanding environments with a flame-retardant UL94 V0 inner case for safety |
| Dual Ground™ | ✓* | ✓* | ✓* | Using the optional DC clamp enables circuit breaker testing with ground protection in place for safety |
| Large, clear LCD | ✓ | ✓ | ✓ | Ideal for all light conditions, with backlight |
| Internal memory storage with USB download capability | | ✓ | ✓ | Effective results management — up to 220 time and date-stamped records |
| Remote control | | | ✓ | Control the instrument remotely over USB via a PC or laptop for added safety |
| Asset tagging | | | ✓ | Works with PowerDB app to generate unique asset IDs for efficient asset management |
| Bluetooth® | | | ✓ | Wireless communication for downloading results and asset tagging |
* Requires optional clamp
❓ Frequently Asked Questions (FAQ)
Q1: What is a Micro-Ohmeter used for?
A. A Micro-Ohmeter measures very low resistances, identifying weak joints or faulty contacts that could cause overheating.
Q2: How do the DLRO100 models differ?
A. The DLRO100EB is the base model, the DLRO100XB adds USB storage, and the DLRO100HB includes Bluetooth® and asset tagging.
Q3: Can I use it outdoors?
A. Yes. With IP54/IP65 protection, the DLRO100 is designed for field use in harsh environments.
Order the Megger DLRO100 Today
Choose the Megger DLRO100 Portable Micro-Ohmeter that suits your needs: the Megger DLRO100EB, Megger DLRO100XB, or the advanced Megger DLRO100HB. Trusted worldwide, the DLRO100 provides the perfect combination of accuracy, safety, and portability.
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