Wide Range 30 mΩ to 3 MΩ DC Resistance Meters with
Temperature Correction for High Speed Testing on
Production Lines
Hioki DC resistance meters measure a broad range of resistance values
at a high level of precision. The RM3544 is easy-to-use resistance
testers suitable for use on either manual or automated production
lines for measuring the winding resistance of motors and transformers
as well as the contact resistance of power relays, switches, and connectors.

Model No. (Order Code)

RM3544No interfaces
RM3544-01Built in EXT I/O, RS-232C, USB

Key Features

• 0.02 % basic accuracy, 1 μΩ max. resolution, 300 mA max. measurable current
• Measure from 0.000 mΩ (testing current 300 mA) to 3.5 MΩ
• Probe for guard jack use and increased measurement current yield an instrument that’s more resistant to noise
• Optional LED COMPARATOR ATTACHMENT and high-volume judgment tones combine to ensure PASS/FAIL judgments are communicated reliably in the noisy environment of the production floor
• EXT I/O interface with NPN/PNP support can accommodate a variety of automated production lines (-01 model)

How to Use Resistance Meters: Measuring Contact Resistance with the Low Power Resistance Function

The resistance of copper wires changes based on the temperature. To address
this issue, the Hioki RM3544 Resistance Meter measures both temperature and
resistance at the same time, and presents the true resistance with its temperature compensation function. With an extremely wide 0.001mΩ to 3.5MΩ
measurement range, the RM3544 provides more than enough capabilities to measure solenoids, choke coils, transformers, motors and many other coil components.

How to use Hioki Low Resistance Meters: The Comparator Function

The Hioki RM3544 offers the ability to compare the measured value with user-defined upper and lower thresholds, and then displays and outputs the comparative decision.
On top of notifying the user of the results using the on-board LED and audio tones, the decision can also be output via the external input/output terminals to relay controls and PLC systems, making the instrument ideal for production and inspection lines.

Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year)

Resistance range30 mΩ (35.000 mΩ display max., 1 µΩ resolution) to 3 MΩ range (3.5000 MΩ display max., 100 Ω resolution), 9 steps
Measurement accuracy: ±0.020 % rdg. ±0.007 % f.s.
Testing current[at 30 mΩ range] 300 mA DC to [at 3 MΩ range] 500 nA DC
Open-terminal voltage5.5 V DC max.
Temperature measurement-10.0 °Cto 99.9°C, accuracy: ±0.5 °C (Temperature Sensor Z2001 and RM3544 combined accuracy)
Measurement speedFAST (50Hz: 21ms, 60Hz: 18ms) / MED (101ms) / SLOW (401ms)
Display refresh rateN/A
FunctionsTemperature correction, comparator (ABS/REF%), key-lock (OFF, menu lock, all lock), display digit count selection function (5 digits/ 4 digits), automatic power supply frequency settings (AUTO/50Hz/60Hz), scaling, judgment sound setting, auto hold, averaging, panel store/panel load
Memory storageN/A
Communication interfaces[Only RM3544-01] Select from RS-232C, Printer (RS-232C), or USB
Remote function, communications monitor function, data output function
Power supply100 to 240 V AC, 50/60 Hz, Rated power consumption: 15 VA
Dimensions and mass215 mm (8.46 in) W × 80 mm (3.15 in) H × 166 mm (6.54 in) D
[RM3544] 0.9 kg (31.7 oz), [RM3544-01] 1.0 kg (35.3 oz)
Accessories[RM3544] Power cord ×1, Clip type lead L2101 ×1, Instruction manual ×1, Spare fuse ×1
[RM3544-01] Power cord ×1, Clip type lead L2101 ×1, Male EXT. I/O connector ×1, Instruction manual ×1, Application disc ×1, USB cable (A-to-B type) ×1, Spare fuse ×1
Catalog: RESISTANCE METER RM3545, RM3544Download PDF  [5MB]English
Catalog: RESISTANCE METER RM3544, RM3548Download PDF  [4MB]English

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