Hioki RM3548-50 Portable Resistance Meter

Overview

The Hioki RM3548-50 Portable Resistance Meter redefines the capabilities of handheld resistance meters by delivering a basic accuracy of 0.02% — a specification typically reserved for high-end benchtop laboratory equipment. With a maximum resolution of 0.1 µΩ and a maximum testing current of 1 A, this portable device lets engineers and technicians perform high-precision measurements directly in the field, eliminating the need to transport heavy equipment to the test site.

A standout feature is its ability to streamline the maintenance of large motors and transformers. An Interval Measurement mode automatically records resistance changes over time, and with the included Z2002 Temperature Sensor the RM3548-50 performs temperature correction, accurately calculating winding temperature rise to detect potential overheating or insulation failures before they become critical.

Key Features

• Benchtop-class basic accuracy of 0.02% in a portable form factor
• Maximum resolution of 0.1 µΩ and maximum testing current of 1 A
• Wide measurement range from 0.0 µΩ (low-resistance range) up to 3.5 MΩ
• Interval Measurement mode for automatic recording of resistance changes over time
• Temperature correction with the included Z2002 Temperature Sensor for heat-run tests
• Detects winding overheating and insulation failures in motors and transformers

Applications

• Electric vehicles: testing battery connections and motor windings
• Aerospace: verifying airframe bonding and fuselage continuity
• Power generation: inspecting circuit breakers, busbars and large equipment
• Heat-run tests and maintenance of large motors and transformers

What’s in the Box

• RM3548-50 Portable Resistance Meter main unit
• Z2002 Temperature Sensor
• Test leads / probes
• Instruction manual and standard accessories

Why buy from MME in UAE

MOHAMMAD MAHDI Electronics Trading LLC (MME) is a trusted supplier of Hioki test and measurement equipment in the UAE. We offer genuine products, competitive pricing, fast local delivery across Dubai, Abu Dhabi and the wider UAE, and knowledgeable after-sales support. Download the datasheet