1 product added to your shopping cart.

RM3545A-2 - Precision instrument for DC resistance, 13 ranges, integrated multiplexer option

High-precision DC resistance meter, 13 ranges from 1 mΩ to 1200 MΩ, basic accuracy 0.045 %, 1 nΩ resolution, 6 ½-digit display, multiplexer option (up to 20 channels), 2.3 ms fastest measurement time, remote control via LAN, RS-232C and USB

€3,088.00*

Content: 1 Each

*Prices excl. VAT plus shipping costs

In stock in Germany

Available stock: 1

Product details

Product number: RM3545A-2

EAN: 4536036014897

Length: 2150 mm

Width: 3070 mm

Height: 800 mm

Weight: 4.8 kg

Product information RM3545A-2 - Precision instrument for DC resistance, 13 ranges, integrated multiplexer option

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)
Multiplexer option with Z3003 for up to 20 measurement channels (4-wire mode)

Typical Applications

Verification of busbar and weld joint resistance in battery modules
Measurement of winding resistance in motors and transformers
Testing of connection quality in EV charging connectors
Pattern resistance measurement on printed circuit boards
Automated multi-point resistance measurement (using Z3003 multiplexer option)

Detailed Product Overview

The RM3545A-2 Resistance Meter combines high-precision DC resistance measurement with integrated multiplexer capability for automated multi-channel testing. It offers 13 measurement ranges from 1 mΩ to 1200 MΩ and a maximum test current of 1 A, providing stable, repeatable results across a wide range of components and materials. With a 6 ½-digit display, 1 nΩ resolution, and a basic accuracy of ±0.045 % rdg ± 0.010 % f.s., the instrument delivers immediate, high-precision readings without the need for warm-up or manual zero adjustment.

Measurement times as short as 2.3 ms (10 Ω range, FAST mode) enable high-throughput testing and short cycle times, which is especially beneficial when the instrument is integrated into automated production lines or inspection systems. The RM3545A-2 supports all functions of the RM3545A-1 and adds multiplexer capability for efficient multi-point testing.

Integrated multiplexer capability

Two optional Z3003 Multiplexer Cards can be installed in the RM3545A-2, each providing 10 measurement channels in 4-wire mode. When two cards are fitted, the instrument can measure up to 20 channels automatically in sequence, enabling resistance evaluation of multiple DUTs without manual reconnection. This internal multiplexer configuration reduces system size, wiring effort, and cost compared to external switching systems.

For automation and data acquisition, the RM3545A-2 provides LAN, USB, and RS-232C interfaces for communication with PCs and controllers, as well as an EXT I/O port for external triggering and pass/fail control. An analog D/A output (0 V to 1.5 V DC) enables monitoring or feedback control. The command-monitor function displays communication commands and responses at the bottom of the instrument’s display, simplifying debugging during system setup and reducing integration time.

Advanced precision functions

To ensure consistent measurement results under fluctuating temperature conditions, the RM3545A-2 includes a Temperature Compensation (TC) function that references measured resistance values to a defined reference temperature. This compensates for material-specific temperature coefficients, for example those of copper (approximately 0.4 % / °C). Temperature can be measured using the supplied Z2001 sensor or a compatible external analog thermometer.

The Offset Voltage Compensation (OVC) function suppresses thermoelectric voltages and internal offset voltages by applying current in both directions and averaging the results. The temperature rise function calculates the actual temperature increase of the DUT from the change in resistance and ambient temperature, while the contact-check function detects insufficient probe contact and reduces errors caused by poor connections.

Future-proof investment

The RM3545A-2 keeps future expansion options open. One or two Z3003 Multiplexer Cards can be installed at any time, allowing the instrument to be upgraded from a single-channel configuration to an automated multi-channel measurement system. Installation requires only a Phillips screwdriver and takes about two minutes. This flexibility allows users to start with manual measurements or prototype setups and later expand to a fully automated test environment without replacing the instrument.

For applications requiring more than 20 channels, the RM3545A-2 can alternatively be combined with the HIOKI SW1002 Multiplexer System, offering up to 132 channels in 4-wire mode.

RM3545A-2 Resistance Meter
Power cord
Temperature sensor Z2001
Male EXT I/O connector
EXT. I/O connector cover
Spare fuse (F1.6AH 250 V)
Start-up guide
Operating precautions
Instruction manual

Related products

Z3003

Z3003 - Multiplexer Unit for RM3545-02

The HIOKI Z3003 multiplexer unit is a versatile module designed for multipoint measurements by freely combining measurement terminals.

€798.00*

View product

RM3545A-1

RM3545A-1 - Precision instrument for DC resistance, 13 ranges from 1 mΩ to 1200 MΩ

Widerstandsmessgerät, sehr hohe Genauigkeit und Mehrkanalfähigkeit, Prüfquelle: DC, 1 A max, schnellste Messgeschwindigkeit: 2,3 ms, feinste Auflösung: 1 nanoOhm

€2,878.00*

View product

RM3544

RM3544 - Resistance Meter

The RM3544 provides precise measurements for a wide range of applications in electronics manufacturing and testing. It uses the 4-terminal measurement method with a constant current source to perform accurate resistance measurements. It is suitable for measuring electrical components such as motors, transformers, relays, switches, and wire connections. Additionally, it supports temperature measurement using thermistors, which is particularly important for applications requiring temperature compensation. With its high resolution and measurement accuracy, it is equally effective on production lines and in research laboratories. Technical details: High measurement accuracy of 0.02%Measurement range from 0.000 mΩ to 3.5 MΩSupports measurement currents up to 300 mAIdeal for simpler applications and manual operation on production linesScaling function for converting resistance values into physical quantities. Comparator function for pass/fail assessments based on predefined thresholds.Temperature compensation function to correct for temperature fluctuations.

€1,018.00*

View product

RM3544-01

RM3544-01 - Resistance meter

The RM3544-01 is a high-precision bench-top resistance meter designed for reliable resistance measurement across a wide range of applications. It is suitable for production lines, quality inspections, and integration with automated systems. With its ability to measure resistance from microohms to megohms and an optional LED Comparator attachment for clear pass/fail judgments, this device delivers fast, stable results in even noisy environments. The RM3544-01 also features enhanced durability and noise resistance, making it a robust choice for industrial use. Technical details: Measurement range: 0.000 mΩ to 3.5000 MΩ Max. resolution: 1 μΩ Basic accuracy: 0.02% Measurement speed: Fast (21 ms at 50 Hz) to Slow (401 ms) Temperature measurement range: -10.0 °C to 99.9 °C (thermistor) Display: 5 digits/4 digits selectable Safety: EN61010, EMC: EN61326 Power supply: 100 to 240 VAC Dimensions: 215W × 80H × 166D mm Weight: Approx. 1.0 kg Selectable communication interfaces: EXT I/O, RS-232C, USB

€1,358.00*

View product

L2100

L2100 - PIN TYPE LEAD

L2100 - Pin Type Lead The L2100 is a pin type lead designed for high voltage battery measurements with robust insulation and long reach for precise readings. Technical Details: Dimensions: A: 300 mm, B: 172 mm, L: 1400 mm Max voltage: 1000 V DC Compatibility: BT3562, BT3563, BT3564

€398.00*

View product

L2101

L2101 - CLIP TYPE LEAD

The L2101 clip type lead features Kelvin clamps, providing precision measurements for resistance testing, designed specifically for the RM3544 and RM3545 series. Technical Details: Length: A: 250 mm, B: 84 mm, L: 1.5 m Compatibility: RM3544, RM3545 series

€168.00*

View product

L2103

L2103 - PIN TYPE LEAD

The L2103 pin type lead is designed for accurate testing applications, compatible with the RM3544 and RM3545 series. Technical Details: Dimensions: A: 250 mm, B: 176 mm, L: 1.5 m Compatibility: RM3544, RM3545 series

€458.00*

View product

L2104

L2104 - 4-Terminal Lead

4-Terminal Lead The L2104 - 4-Terminal Lead is designed for precision measurements, offering durable construction for use with the RM3544 and RM3545 series. Technical Details: Dimensions: A: 280 mm, B: 149 mm, L: 1.5 m Compatibility: RM3544, RM3545 series

€268.00*

View product

L2105

L2105 LED COMPARATOR ATTACHMENT

The Hioki L2105 LED Comparator Attachment is designed for efficient judgment indication when connected to the COMP.OUT jack of compatible instruments. It allows users to easily check measurement results from a distance, with the LED indicator showing green for acceptable (IN) results and red for high (Hi) or low (Lo) readings.

€68.00*

View product

L2102

L2102 - PIN TYPE LEAD

The L2102 Pin Type Lead features a gilded, spring contact needle, offering reliable contact for precise measurement, suitable for the RM3544 and RM3545 series. Technical Details: Dimensions: A: 250 mm, B: 178 mm, L: 1.5 m Compatibility: RM3544, RM3545 series

€338.00*

View product

Z2001

Z2001 - Temperature Sensor

The HIOKI Z2001 temperature sensor is designed for use with the HIOKI RM3545 series and similar products, delivering reliable temperature measurements with a 1.75 m cable.

€78.00*

View product

Z5038

Z5038 - Zero Adjustment Board

The HIOKI Z5038 Zero setting board is an accessory for Hioki battery testers to do a defined zero adjustment with HIOKI test leads.

€48.00*

View product

9642

9642 LAN CABLE

LAN cable, straight Ethernet cable, supplied with straight to cross conversion adapter, 5 m length, for the Memory HiCorder, LR8400 series, and similar products

€48.00*

View product

EU3545A

EU3545A - 19-inch rack-mount kit for RM3545 series

Rack-mount accessory for installing RM3545 resistance meters in 19-inch racks

€248.00*

View product