Hioki RM3544 DC Resistance Meter with Temperature Correction (30mΩ to 3MΩ)

High-Accuracy Bench-Top Resistance Meter

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.

High-precision specs in a compact package

Convenient range option

• Measure from 0.000 mΩ to 3.5000 MΩ
• 1μΩ max. resolution, 0.02% basic accuracy
• Max. measurable current of 300mA

As inverter-equipped power supply equipment uses increasingly high currents and frequencies, increasingly low-resistance and low-loss inductors are being used in their circuitry, prompting a need for the ability to measure lower resistance levels with a high level of stability. With a resolution of 1 μΩ, the RM3544/ RM3544-01 satisfies these needs.

Electronic components make extensive use of high-resistance substrates such as conductive sheets and rubber, and the RM3544/ RM3544-01 delivers the ability to measure up to 3.5 MΩ. Moreover, the instrument’s maximum accuracy of 0.02% allows it to be used in testing current detectors with a precision of 0.1%.

No warm-up period or zero adjustment

The RM3544/RM3544-01 has no warmup time, meaning it’s ready to use for measurement as soon as you turn it on. Accuracy is guaranteed immediately after the instrument is powered up (assuming temperature and humidity conditions that satisfy the accuracy guarantee conditions).

Footprint of just 215 x 166mm

Compared to previous the previous model (HIOKI 3540), the RM3544/RM3544-01 takes up approximately 25% less installation space. The smaller footprint creates work space in front of the instrument, and its compact size allows it to be easily and unobtrusively embedded in other equipment.

High-durability probes

HIOKI offers a line of probes designed to accommodate the full range of measurement targets. Flex resistance has been dramatically improved (based on HIOKI comparisons).
 

Advanced functionality that’s as easy to use as it is easy to understand

1. Measurement jacks with guard jack
   • By connecting a probe to the guard jack, you can minimize the effects of external noise on measurements.
2. Simple control over basic settings
   • Range and measurement speed can be controlled directly.
3. Loud, user-selectable judgment tones
   • High-volume judgment tones of at least 85 dB inform the operator of test results, ensuring that they remain audible even in the vicinity of noisy machinery. The ability to choose from various tones ensures operators won’t confuse judgment results on lines where multiple RM3544 units are in use.
4. LED Comparator Attachment (Option)
   • The LED Comparator Attachment indicates judgment results with green and red LEDs, eliminating the need to look at the instrument’s screen and increasing work efficiency. Since the lamps do not light up when the measurement leads are open, the attachment can also be used to verify the connection status.

5. Material and temperature-independent temperature correction function
   • The temperature correction function can be used to convert resistance values that vary with the ambient temperature to a reference value at a reference temperature using the Temperature Sensor Z2001 and a user-specified resistance temperature coefficient.
6. Scaling
   • The scaling function can be used to convert resistance values into physical properties such as length.
   • Conversion formula: Rs = A x R + B
     • A, B: Constants
     • R: Measurement value
     • Rs: Resistance value
7. Comparator Function
   • The comparator function compares measured values to a previously set reference value or range and then displays and outputs the judgment result. The RM3544-01 can also output comparator results via its EXT I/O interface.
8. Panel save and load functionality for up to 10 sets of parameters
   • Panel save and load functionality provides the ability to save and subsequently load up to 10 sets of instrument setting conditions for range, comparator, and other parameters. Naming each set of panel data lets you make setup changes among production lots and lines smoothly and effortlessly.