Megger DLRO200 Digital Low Resistance Ohmmeter

The Megger DLRO200 is a high-precision digital low resistance ohmmeter designed for accurate testing of electrical connections, busbars, bonds, and switchgear contacts. Built for field and workshop use, it delivers reliable low-resistance measurements from 1 µΩ to 200 Ω, making it ideal for critical applications in power generation, distribution, and industrial maintenance.

Equipped with a robust, handheld design and intuitive interface, the DLRO200 simplifies the process of identifying loose connections, corroded joints, or deteriorated contacts that can cause overheating or equipment failure. Its advanced features include multiple test modes, automatic current reversal to eliminate thermal EMF errors, and memory storage for later analysis.

With the Megger DLRO200, engineers and technicians can perform rapid, accurate, and repeatable measurements, ensuring compliance with international standards. Lightweight, portable, and durable, it is an essential tool for preventive maintenance, commissioning, and troubleshooting in electrical systems.

Specifications:

Measurement

Resistance measurement range: 0.1 µΩ – 999.9 mΩ (depending on supply voltage & test leads)
Best resolution: 0.1 µΩ
4-terminal technique to eliminate test lead resistance from measurements

Accuracy

Voltage: ±0.5 % ±0.1 mV
Current: ±0.5 % ±0.1 A
Resistance:
• Better than ±1 % from 300 µΩ – 100 mΩ
• Better than ±2 % from 100 µΩ – 300 µΩ

Test Current

DC test current: 10 A – 200 A (depending on load & supply voltage)
Current accuracy: ±2 % ±2 A

Test Modes & Timing

Test modes: Manual, Auto, Continuous
Normal/Auto test duration: ~10 seconds
Continuous mode: updates every ~2 seconds

Memory & Communication

Internal memory: up to 300 test results + memo (160 characters)
Communication port: RS232 for data download or real-time output

Display & Interface

Display: High-resolution backlit LCD
Indicators: LED for test current + on-screen messages

Other Features

Supply voltage: 100 – 265 V AC, 50/60 Hz
Voltmeter input impedance: >200 kΩ
Hum rejection: 5 V rms (50/60 Hz)
Operating environment: –10 °C to +50 °C
Max humidity: 95 % RH non-condensing
Max altitude: 2000 m

Physical

Dimensions: ~410 × 250 × 270 mm
Weight: ~14.5 kg (without test leads)

Standards & Safety

Safety standards: IEC 61010‑1
EMC compliance: IEC 61326‑1

Digital Low Resistance Ohmmeter

Megger DLRO200 For Sale