The Hoyt Electrical Instrument 6237 DLRO is a professional-grade digital low resistance ohmmeter designed for precise measurement of low resistance values in electrical systems. With a maximum resolution of 1µΩ and six measurement ranges from 2.000mΩ to 200.0Ω, this instrument delivers accurate readings essential for continuity testing, bonding verification, and ground resistance assessment. Its four-terminal measurement technique eliminates lead resistance errors, ensuring reliable results in demanding industrial environments.
Key Features & Highlights
- High Resolution: Measures down to 1µΩ, capturing minute resistance variations.
- Six Ranges: Covers 2.000mΩ to 200.0Ω, suitable for a wide range of testing applications.
- Four-Terminal Measurement: Kelvin connection ensures accuracy by eliminating test lead resistance.
- Accuracy: ±5% on the 2.000mΩ range, ±4% on 20.00mΩ and 200.0mΩ ranges, ±3% on 2.000Ω, and ±2% on 20.00Ω and 200.0Ω ranges.
- Complete Kit: Includes test leads, charger, and instruction manual for immediate use.
- Rugged Construction: Built for industrial environments, ensuring durability and long service life.
Applications
The 6237 DLRO is ideal for electrical maintenance professionals, quality control engineers, and technicians who need to verify low resistance connections in switchgear, busbars, cable joints, motor windings, and grounding systems. It is also valuable for preventive maintenance programs and troubleshooting in manufacturing plants, utilities, and field service operations.





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