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Hioki is a leading manufacturer of electrical measuring instruments and test equipment, providing precision solutions for power analysis, battery testing and industrial maintenance. Its portfolio includes digital multimeters, clamp meters, power analysers, battery testers, data loggers and insulation testers. Trusted by engineers, electricians and researchers worldwide, Hioki products support applications in energy, automotive, electronics manufacturing and electrical maintenance.
Portable Resistance Meter, 3 mOhm to 3 MOhm, Bluetooth optional
Handheld four-wire DC milliohm meter, test current range 500 nA to 1 A, ten resistance ranges from 3 mOhm to 3 MOhm, backlight display, optional Bluetooth communication
• 0.02 % basic accuracy
• Test current range 500 nA to 1 A
• 10 resistance ranges from 3 mOhm to 3 MOhm
• 0.1 μOhm maximum resolution
• Optional Bluetooth communication with Z3210 adapter
• Only portable meter for low resistances with high accuracies
• Withstand DC voltages of up to 70 V
• High voltage connection tests in EVs
• Motor winding tests
• Cable length testing
• Mechanical connection tests
The HIOKI RM3548-50 Resistance Meter is a portable, highly sensitive milliohm meter designed for precise small resistance measurements. It delivers a basic accuracy of 0.02% and a resolution of 0.1 μΩ, covering a range from 3 mΩ to 3 MΩ. This makes it ideal for monitoring even slight changes in contact resistance, such as in electric vehicles (EVs), motor and generator windings, or for high-precision cable length measurements.
The RM3548-50 is compact and lightweight. Weighing less than 1 kilogram, this resistance meter allows for easy use in hard-to-reach places. Its rugged design and portability make it a convenient tool for fieldwork and maintenance tasks. With a high current capability of up to 1 A, it can measure low resistance values reliably, making it suitable for checking continuity in automotive ground lines and inspecting welds in aircraft fuselages.
The Resistance Meter RM3548-50 features temperature correction, ensuring accurate measurements by adjusting for ambient conditions. It also includes advanced functions like interval measurement, making it suitable for temperature-rise testing. The device requires no warm-up or zero adjustments, allowing for immediate operation.
With a memory capacity for 1000 data points and easy USB data transfer, the RM3548-50 is highly functional for on-site testing. The resistance meter's overvoltage protection up to 70 V DC and intuitive user interface further enhance its reliability and usability for professionals working in maintenance and testing applications. This four-wire resistance meter combines precision, portability, and ease of use, making it a versatile choice for a wide range of industrial applications.
When paired with the optional Z3210 Bluetooth adapter, measurement data can be wirelessly transferred to a smartphone or tablet. A backlit display ensures easy readings even in low-light environments. A variety of optional test leads is available, covering both general measurement applications and specialized ones, such as measuring coated alloys or working in sensitive aircraft environments.
• RM3548-50 Portable Resistance Meter
• L2107 Clip Type Lead
• Z2002 Temperature Sensor
• Z5041 Instrument Protector
• LR6 Alkaline battery (×8)
• Instruction manual
• USB cable (A to mini-B type)
• Neck strap
• Spare fuse
• Z3210 Bluetooth Adapter
• L2140 Test Leads
• L2141 Test Lead
• L2142 Test Lead
• 9465-10 Straight Pin Type Lead
• 9465-11 Pin Type Lead
• 9465-90 Tip Pin (Replacement for 9465-10, 9465-11, L2020, L2140)
• 9772 Straight Pin Type Lead
• 9772-90 Tip Pin (Replacement for 9772, L2003, L2100, L2110)
• 9453 Four Terminal Lead
• L2107 Clip Type Lead
• 9467 Large Clip Type Lead
• 9454 Zero Adjustment Board (for L2100, 9465-10, 9465, 9461)
• L2105 LED Comparator Attachment
• Z2002 Temperature Sensor
• Z5041 Instrument Protector
• C1014 Carrying Case
