RM3545A-1 - Precision instrument for DC resistance, 13 ranges from 1 mΩ to 1200 MΩ
High precision DC resistance meter, 13 ranges from 1 mΩ to 1200 MΩ, basic accuracy
0.045%, 1 nΩ resolution, 6 1/2 digit display, compatible with SW1001 / SW1002 Multiplexer
Systems, remote controllable via LAN, RS-232C, USB
Available stock:
1
Product details
Product number:
RM3545A-1
EAN:
4536036014880
Width:
3065 mm
Height:
800 mm
Weight:
4.12 kg
Product information RM3545A-1 - Precision instrument for DC resistance, 13 ranges from 1 mΩ to 1200 MΩ
Key Specifications
- Resistance ranges: 1 mΩ to 1200 MΩ (13 ranges)
- Basic accuracy: 0.045% rdg ± 0.010% full scale (1 mΩ range)
- Resolution: 1 nΩ (1 mΩ range)
- Measurement time: 2.3 ms (10 Ω range, fast mode)
- Compatible with HIOKI SW1001 / SW1002 Multiplexer Systems
Typical Applications
- Verifying busbar and weld joint resistance in battery modules
- Measuring winding resistance in motors and transformers
- Testing connection quality of EV charging connectors
- Pattern resistance measurement on printed circuit boards
- DC resistance evaluation of high-current components
Detailed Product Overview
The RM3545A-1 Resistance Meter enables high-precision DC resistance measurements on components and assemblies in which even very small resistance variations can affect performance or safety. It offers 13 resistance ranges from 1 mΩ to 1200 MΩ and a maximum test current of 1 A, providing stable and accurate results for a wide range of components. With a 6 1/2 digit display, 1 nΩ resolution and a basic accuracy of ±0.045 % rdg ± 0.010 % full scale, the RM3545A-1 delivers immediate, high-precision measurements without warmup or manual zero adjustment. Measurement times as short as 2.3 ms support highthroughput testing and short cycle times, which is particularly advantageous when the instrument is integrated into automated test systems or production lines.The instrument is suitable for production and inspection environments as well as for use in
laboratories. It is used for verifying busbar and weld joint resistance in battery modules,
measuring winding resistance in motors and transformers, checking connection quality of EV
charging systems, evaluating pattern resistance on printed circuit boards and measuring DC resistance of high-current components such as fuses or shunt resistors. The contact check
function verifies proper probe contact, reducing errors caused by poor connections.
Advanced precision functions
To ensure consistent measurement results under fluctuating temperature conditions, the RM3545A-1 includes a Temperature Compensation (TC) function that automatically references measured values to a specified reference temperature. This function corrects the influence of material characteristics such as the temperature coefficient of copper conductors, which is approximately 0.4 % per °C and causes resistance values to vary with temperature. Temperature can be measured using the included Z2001 sensor or a compatible external thermometer with analog output. This correction ensures consistent evaluation criteria between production and final inspection and enables precise quality control, for example when measuring winding resistance.When temperature differences occur at junctions between different metals, such as
measurement leads, probes and the device under test (DUT), thermoelectric voltages are
generated. These voltages can distort low-resistance readings. Since temperature
differences cannot be completely eliminated, the Offset Voltage Compensation (OVC)
function improves stability by applying current in both directions and averaging the results.
System integration and communication interfaces
The RM3545A-1 offers a complete set of interfaces for integration into automated test systems and production environments. Standard connectivity includes LAN, USB and RS232C for direct communication with PCs and controllers, while the EXT I/O port allows external triggering and pass/fail control. A D/A output (0 V to 1.5 V DC) provides analog voltage output for monitoring or control purposes. The command-monitor function displays communication commands and responses at the bottom of the instrument’s display, simplifying debugging during system integration and reducing setup time.When combined with the SW1002 Multiplexer System, the RM3545A-1 can be expanded to
up to 132 channels and enables automated series measurements on multiple DUTs or
measurement points after a single setup. Alternatively, the RM3545A-2 offers integrated
multiplexer capability and can be fitted with up to two Z3003 Multiplexer Units, enabling
measurement of up to 20 DUTs in 4-wire mode within a single instrument.
- RM3545A-1 Resistance Meter
- Power cord
- 2001 Temperature sensor
- Male EXT I/O connector
- EXT. I/O connector cover
- Spare fuse (F1.6AH 250 V)
- Start-up guide
- Operating precautions
- Instruction manual
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Product brochure, RESISTANCE METER RM3545A (English)2,021 KB pdf
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RM3545A Measurement Lead Selection Guide (English)901 KB pdf
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Flyer RM3545A (English)1,230 KB pdf
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Instruction Manual, RESISTANCE METER RM3545A (English)8,991 KB pdf
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Instruction Manual, RESISTANCE METER RM3545A (Spanish)8,864 KB pdf
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