Digital ohmmeter DLRO2X

portablelow-resistancerugged

Overview
The DLRO2X is a portable 2 A low resistance ohmmeter engineered for fast, accurate and repeatable resistance measurements in industrial, railway and avionic environments. The unit is rugged, handheld and rated to IP54 for dust and moisture protection in outdoor or workshop conditions. Measurement aids include the Confidence Meter™ for noise rejection and a Difference Meter for rapid comparative checks. Results can be stored manually or automatically and exported via USB or transferred wirelessly via Bluetooth.

Key features

• Confidence Meter™ noise rejection mode for stable readings in electrically noisy environments
• Difference Meter for quick percentage comparisons and visual change indication
• Maximum DC output current: 2 A for low-resistance measurement
• Dedicated long‑lead test mode: up to 1 A into 4 Ω for long cable testing
• Safe testing of inductive loads at 1 A
• Active protection against inadvertent live connections up to <600 V without blowing a fuse
• Safety ratings: CAT III 600 V / CAT IV 300 V (IEC 61010)
• Ingress protection: IP54
• Data storage: internal memory with manual/auto save and USB export
• Bluetooth connectivity and compatibility with CertSuite Asset software

Applications
Suitable for bond and continuity testing, switchgear and busbar verification, lightning protection and avionic bonding checks, wind-turbine and generator circuit tests, railway track and earthing resistance measurements, and industrial maintenance where robust, repeatable low-resistance measurement is required.

Operation and data management
Results may be saved to folders with asset IDs, stored manually to a selected asset or saved automatically at test completion. Data export is available via USB; Bluetooth enables live or stored-result transfer for integration with asset-management workflows. Firmware and UI updates are supported via the USB port using update files on a flash drive.

Technical specifications

• Max output current (DC): 2 A
• Long-lead test mode: up to 1 A into 4 Ω
• Power source: Battery
• Data storage and communication: USB (internal memory) and Bluetooth
• Ingress protection: IP54
• Safety ratings: CAT III 600 V / CAT IV 300 V (IEC 61010)