The Hioki RM3545 is a high-precision, 6.5-digit DC resistance meter designed for measuring a wide range of resistive components. Supporting measurements from 10 nΩ to 1.2 GΩ with a basic accuracy of 0.006%, it is highly suited for quality testing of motors, transformers, power inductors, and contact resistance.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | RS-232C, USB (Type B, USB 2.0 Full Speed), EXT I/O (handler) [GP-IB is standard on RM3545-01] |
| Guaranteed Accuracy Period | 1 year |
| Product Variations | RM3545 (standard), RM3545-01 (with GP-IB), RM3545-02 (with multiplexer slots) |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 100 to 240 V AC (±10%), 50 Hz/60 Hz, 40 VA max. |
| Operating Temperature | 0 to 40 °C |
| Dimensions (W×H×D) | 215 mm W × 80 mm H × 329 mm D |
| Weight | 2.5 |
| Form Factor | Benchtop |
Electrical Performance
| Parameter | Value |
|---|---|
| Measurement Range | 10 mΩ to 1000 MΩ (12 ranges) |
| Maximum Resolution | 10 nΩ (on 10 mΩ range) |
| Basic Accuracy | ±0.006% rdg. ±0.001% f.s. |
| Maximum Measurement Current | 1 A DC |
| Measurement Current Ranges | 1 A to 100 nA DC |
| Open-circuit Voltage | 20 V DC max. (20 mV max. when LP is ON) |
Low Power Measurement
| Parameter | Value |
|---|---|
| Low Power Resistance Measurement Range | 1000 mΩ to 1000 Ω (4 ranges) |
| Low Power Measurement Max Current | 1 mA DC |
| Low Power Open-circuit Voltage | 20 mV DC max. |
Timing & Speed
| Parameter | Value |
|---|---|
| Integration Time (50 Hz) | FAST: 2.2 ms, MED: 20 ms, SLOW1: 102 ms, SLOW2: 202 ms |
| Integration Time (60 Hz) | FAST: 2.2 ms, MED: 17 ms, SLOW1: 85 ms, SLOW2: 168 ms |
| Trigger Modes | Internal trigger, External trigger |
Temperature Measurement
| Parameter | Value |
|---|---|
| Temperature Measurement Range | -10.0 °C to 99.9 °C |
| Temperature Measurement Accuracy | ±0.50 °C (with Temperature Sensor Z2001) |
| Compatible Temperature Sensors | Platinum resistance thermometer Pt100, Temperature Sensor Z2001 |
Functions
| Parameter | Value |
|---|---|
| Temperature Correction (ATC) | Reference temperature range: -10.0 °C to 99.9 °C |
| Temperature Conversion (Δt) | Calculates temperature rise from resistance and temperature coefficient |
| Offset Voltage Compensation (OVC) | Yes (removes thermal EMF errors) |
| Contact Check Function | Checks probe contact state before and during measurement |
| Comparator Settings | Upper/lower limits, or reference value and deviation (%) |
| Comparator Outputs | Hi, IN, Lo (via LED display and EXT I/O) |
| Statistical Calculations | Average, max, min, population standard deviation, sample standard deviation, process capability index |
| Key-lock Function | Yes |
User Interface & Memory
| Parameter | Value |
|---|---|
| Internal Data Memory | Up to 30,000 data points |
Connectivity
| Parameter | Value |
|---|---|
| EXT I/O Handler Interface | 37-pin D-sub connector (optocoupler isolated inputs/outputs) |
| USB Interface Mode | Virtual COM port, USB-TMC class |
| RS-232C Interface Speed | Transmission speed up to 115,200 bps |
Configurations
| Parameter | Value |
|---|---|
| Multiplexer Support | Supported on RM3545-02 only (accepts up to two Z3003 multiplexer units) |
Environmental
| Parameter | Value |
|---|---|
| Operating Humidity Limit | 80% rh or less (non-condensing) |
| Storage Temperature Range | -10 °C to 50 °C |
| Storage Humidity Limit | 80% rh or less (non-condensing) |
| Maximum Operating Altitude | 2000 m (6562 ft) |
Safety & Input Limits
| Parameter | Value |
|---|---|
| Maximum Rated Voltage to Earth | 60 V DC |
| Withstand Voltage | 1.62 kV AC for 1 minute (between power terminals and protective ground) |
Compliance
| Parameter | Value |
|---|---|
| Safety Compliance | EN 61010-1 |
| EMC Compliance | EN 61326-1 Class A |
| Calibration Interval | 1 year |
Accessories
| Parameter | Value |
|---|---|
| Standard Accessories | Power cord, Clip Lead L2101, Instruction Manual, Extra Fuse |
Measurement Features
| Parameter | Value |
|---|---|
| Measurement Method | 4-terminal resistance measurement |
| Averaging Function | Off, 2 to 100 times |
| Scaling Function | 0.001 × 10^-9 to 9.999 × 10^9 (with user-defined unit) |
| Panel Save/Load | Up to 30 settings can be saved |
Interfaces
| Parameter | Value |
|---|---|
| GP-IB Interface | Standard on RM3545-01 (IEEE-488.2 compliant) |
D/A Output
| Parameter | Value |
|---|---|
| D/A Output Voltage | 0 V to 2.0 V DC (RM3545 and RM3545-01 only) |
| D/A Output Resolution | 12-bit (RM3545 and RM3545-01 only) |
Multiplexer Expansion
| Parameter | Value |
|---|---|
| Multiplexer Slots | 2 slots, compatible with Z3003 Multiplexer Unit (RM3545-02 only) |
| Maximum Multiplexer Channels | 20 channels (4-terminal) or 42 channels (2-terminal) (RM3545-02 only) |
Operating Conditions
| Parameter | Value |
|---|---|
| Warm-up Time | 60 minutes |
| Guaranteed Accuracy Temperature | 23 °C ± 5 °C |
| Guaranteed Accuracy Humidity | 80% RH or less (no condensation) |
Accessories & Options
| Parameter | Value |
|---|---|
| Compatible Multiplexer Unit | Z3003 (up to 2 units, RM3545-02 only) |
Performance
| Parameter | Value |
|---|---|
| Measurement Speed (FAST, 50 Hz) | 21 ms |
| Measurement Speed (FAST, 60 Hz) | 18 ms |
Power Supply
| Parameter | Value |
|---|---|
| Maximum Power Consumption | 40 VA |
Technology
DC Resistance Measurement
Applications
High-precision resistance measurements on electronic components, motor/transformer windings, and contact resistance
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