Hioki RM3500 Series – RM3548-50 Resistance Meter

The RM3548-50 is a precision handheld resistance meter measuring from 0.1 μΩ to 3.5 MΩ. It offers effortless operation and accuracy, making it ideal for EV maintenance, aircraft overhaul, and motor inspections.

Leveraging its precision, the RM3548-50 goes beyond basic resistance measurement. It not only performs temperature correction but also converts resistance to estimated motor temperatures and calculates cable lengths with 1 cm precision. Its versatile probes, including high-durability pin-types and needle probes that measure through paint, meet various maintenance needs.

Advanced connectivity enables seamless wireless data output for efficient recording and management of measurements. Ensuring precise readings with a four-wire method and offset voltage compensation (OVC), the RM3548-50 is the go-to tool for dependable precision maintenance.

Key Facts:

• 0.02% basic accuracy, 0.1 µΩ max. resolution, 1 A max. testing current

• Measure from 0.1 µΩ (testing current 1 A) to 3.5 MΩ

• Automatic temperature correction ensures accurate results & faster testing

• Advanced Connectivity: seamlessly integrate data with Excel and a mobile app to manage & analyze data efficiently (Wireless Adapter Z3210 is necessary.)

• Protections for safe operation: halts operation & triggers alerts when incorrect voltage inputs are detected

• Versatile Applications: Ideal for EV, aircraft, & motor/transformer maintenance with various probe options

User-friendly operation

Precision engineering

Adopts the four-wire measurement method and features an offset voltage compensation (OVC) function to ensure high accuracy measurements.

Simple resistance measurement

Enables even beginners to perform resistance measurements without the complexity of multi-functional devices.

Automatic calculations

Temperature correction converts the value of a resistance that depends on temperature, such as that of a copper wire, to a resistance value at a particular temperature to display it.

Variety of probes to choose from

A diverse range of probes tailored to meet specific maintenance needs across various applications.

• L2140: Ideal for EV and hybrid car maintenance, the RM3548-50 excels in equipotential bonding tests, battery connection checks, and motor winding inspections.

• L2141, L2142: Ideal for aircraft maintenance and overhaul. The L2141 probe, with its rounded tip, is perfect for measuring resistance without damaging the aircraft body, while the L2142 probe’s sharp edge allows for resistance measurement through paint.

Optimized safety features

Circuit protection

In EV maintenance or battery busbar testing, accidental contact with live voltage can damage a resistance meter. The RM3548-50 features automatic overvoltage protection to prevent this, stopping measurements and safeguarding the circuit from live voltages of up to 60 V DC.

EV maintenance test tool

4 essential test tools for EV high-voltage shutdown and reinitialization

Recommended by leading EV and hybrid manufacturers for reliable and precise maintenance tasks, the RM3548-50 meets the UN ECE R100 international safety standards, which require a minimum measurement current of 0.2 A.

We provide reliable electrical test tools to ensure safe operations for EV maintenance and service personnel.

In The Box:

• Rm3548-50 Resistance Meter

• L2107 Clip Type Leads

• Z2002 Temperature Sensor

• Z5041 Protector Case