HIOKI RM3545 Resistance Meter – Ultra-High Precision DC Resistance Instrument

$3,180.00

The RM3545 is a super-high-precision, multichannel DC resistance meter that covers 0.00 μΩ to 1.200 GΩ. It offers up to 0.01 μΩ resolution, ±0.006 % basic accuracy, 1 A max current, low-power measurement, and optional scanning for up to 20 channels (4-terminal) for demanding production or research tasks.

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Overview

The HIOKI RM3545 is a state-of-the-art DC resistance meter designed for extremely precise and stable resistance measurements across an extremely wide range. It supports measurements from near zero micro-ohms (0.00 μΩ) up to giga-ohm levels (1.200 GΩ), with top-end resolution and a suite of functions that address temperature effects, offset voltage (thermal EMF), and contact resistance. It is used widely in production environments (motors, transformers, connectors, welding joints) and in R&D labs where measurement accuracy and stability are critical.

Key Features

Ultra-wide resistance range: from 0.00 μΩ (when using 1 A test current) up to 1.200 GΩ
High resolution: 0.01 μΩ (in the lowest range) when using full test current
Basic accuracy: ±0.006 % reading ±0.001 % full scale
Low-power (LP) resistance measurement mode for contact resistance or delicate surfaces
Offset Voltage Compensation (OVC) to mitigate thermal EMF effects in low resistance measurements
Multiplexer unit option (Z3003) for RM3545-02: up to 20 channels with 4-terminal measurement and scanning capabilities
Fast measurement modes: FAST (~2.2 ms), MED (~20-25 ms), SLOW1, SLOW2
Comprehensive functions: temperature measurement and compensation, comparator/judge output, statistical calculations, panel store/load, display digit selection, auto power frequency, D/A output, external/remote control interfaces (RS-232C, USB, etc.)

Applications

Measuring winding resistance in motors, transformers, inductors
Checking contact resistance in connectors, relays, switches
Evaluating busbar joints and welds for battery assemblies or power electronics
Quality control of PCB trace resistances, conductive paths, and resistance of components like shunts
R&D labs needing ultra-low resistance measurement for material science, advanced electronics, sensors

Technical Specifications

Parameter	Specification
Resistance Range (full)	0.00 μΩ to 1.200 GΩ
Minimum Resolution	0.01 μΩ
Basic Accuracy	±0.006 % of reading ±0.001 % of full scale
Maximum Test Current	1 A DC
Low-Power Mode Current	down to ~1 mA to a few μA (depending on range)
Open-Circuit Terminal Voltage	≤20 mV (low power mode); up to ~5.5 V (higher ranges)
Measurement Speed Modes	FAST (~2.2 ms), MED (~20-25 ms), SLOW1, SLOW2
Temperature Measurement	-10.0 °C to +99.9 °C (with sensor) accuracy ±0.50 °C
Interfaces / Communication	RS-232C, USB, optional GP-IB (on certain sub-models), EXT I/O, D/A output
Multiplexer / Scanning Capabilities	Up to 20 channels, 4-terminal measurement (RM3545-02 with Z3003 units)
Power Supply	AC 100-240 V, 50/60 Hz; ~40 VA
Dimensions & Weight	215 mm × 80 mm × 306.5 mm; ~2.5 kg (RM3545 / RM3545-01), ~3.2 kg (RM3545-02)

Package Contents

HIOKI RM3545 main unit (model variant)
Power cord
Clip-type test lead L2101
Temperature sensor Z2001
EXT I/O male connector
USB cable (A-to-B)
Instruction manual / application disc
Spare fuse

Call to Action

Ensure your measurements are precise, reliable, and compliant. Get the HIOKI RM3545 now for high accuracy resistance testing that supports both production demands and research benchmarks. Contact us for pricing, lead times, optional multiplexers or probes, or to schedule a demonstration.

【FAQ】

Q: What is the lowest resistance this meter can measure reliably?
A: With 1 A DC test current, it can measure down to 0.00 μΩ with resolution of 0.01 μΩ.
Q: Can RM3545 perform multi-point / multi-channel measurements?
A: Yes. The RM3545-02 model plus optional Z3003 multiplexer units allow 20-channel 4-terminal scanning measurement.
Q: How does RM3545 handle effects of thermal EMF and environmental temperature?
A: It includes Offset Voltage Compensation (OVC) to correct thermal EMF and supports temperature sensing/compensation via sensor input.
Q: What interfaces are available for remote control or data logging?
A: USB, RS-232C, EXT I/O, optional GP-IB (depending on submodel), D/A output.
Q: Is it suitable for delicate contact resistance tests (connectors, signal relays)?
A: Yes. Low-power mode offers low open-circuit voltage (<20 mV) and low current settings to protect contact surfaces.

HIOKI RM3545 Resistance Meter – Ultra-High Precision DC Resistance Instrument