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HIOKI RM3544/RM3548 RESISTANCE METER

HIOKI RM3544/RM3548 RESISTANCE METER
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HIOKI RM3544/RM3548 RESISTANCE METER

Product catalog summary
Overview: The document details the specifications and features of the RM3545 and RM3544 resistance meters, designed for high-accuracy resistance measurement in production and development environments. The RM3545 offers super-high accuracy and multi-channel capabilities, while the RM3544 is optimized for manual and automated line integration.
Specifications:
  • RM3545: Measures from 0.00µΩ to 1200MΩ with a maximum resolution of 0.01µΩ and basic accuracy of 0.006%. Supports a maximum measurable current of 1A.
  • RM3544: Measures from 0.000mΩ to 3.5MΩ with a maximum resolution of 1µΩ and basic accuracy of 0.02%. Supports a maximum measurable current of 300mA.
Key Features:
  • Both models include temperature measurement and correction, comparator functions, and auto hold capabilities.
  • The RM3545 offers additional features like low power resistance measurement, temperature rise conversion, offset voltage compensation, and D/A output.
  • The RM3545-02 variant supports up to 20-channel multiplexer for multi-contact resistance measurement.
Applications: Suitable for testing motors, solenoids, choke coils, transformers, wire harnesses, contacts, relay contacts, switches, fuses, resistors, heaters, conductive rubber, and paint. The RM3545 is particularly suited for compact fuses, airbag inflators, and small-signal contacts.
Advanced Features:
  • Multiplexer Unit Z3003: Allows scanning measurement of up to 20 locations with 4-terminal measurement, extendable to 42 locations with 2-terminal measurement.
  • Temperature Correction: Converts resistance values to a reference temperature using the Temperature Sensor Z2001 or an infrared thermometer.
  • Comparator Function: Compares measured values to reference values and outputs judgment results.
  • High-Speed Operation: The RM3545 completes measurement and judgment output in as little as 1.9ms, while the RM3544-01 takes 18ms.
Usability Enhancements:
  • Features like auto-scanning, step scanning, and flexible pin assignments enhance usability in various testing scenarios.
  • High-durability probes and extensive contact check functionality ensure reliable measurements.
  • Communication interfaces include USB and RS-232C, supporting integration with automated systems.
Conclusion: The RM3545 and RM3544 resistance meters offer comprehensive solutions for high-precision resistance measurement, with features tailored to both manual and automated testing environments. Their advanced capabilities and robust design make them ideal for a wide range of industrial applications.
Introduction: This document provides technical specifications and operational guidelines for the RM3544 and RM3545 series instruments, focusing on their input/output signals, electrical specifications, and integration capabilities.
Input/Output Signals: The RM3545 series supports various input signals such as TRIG, CAL, and KEY_LOCK, and output signals like EOM, ERR, and BIN0 to BIN9. The RM3544 series has limited I/O capabilities compared to the RM3545.
Electrical Specifications: Inputs are photocoupler isolated with non-voltage contact inputs, supporting current sink output. Outputs are photocoupler-isolated open drain with a maximum of 30V DC and 50mA per channel. External power output supports both sink and source outputs at 5V ±10% with a maximum current of 100mA.
Integration and Connectivity: The RM3545 series can be connected to a PC via RS-232C or USB for control and data acquisition. It supports automatic data output and integration with applications like spreadsheets without special drivers. The RM3544-01 variant includes these communication interfaces.
Measurement Capabilities: The RM3545 series offers resistance measurement from 0.00000mΩ to 1200.0MΩ across 12 ranges, and temperature measurement using thermistors. The RM3544 series provides similar capabilities but with fewer ranges.
Additional Features: Both series support temperature correction, self-calibration, and various measurement speeds. The RM3545 series includes advanced features like zero-adjustment and multiplexer support for expanded measurement capabilities.
Accuracy and Environmental Conditions: The document specifies conditions for guaranteed accuracy, including temperature and humidity ranges. The RM3545 requires a warm-up time of 60 minutes for optimal accuracy.
Physical Specifications: Dimensions and weight vary between models, with the RM3545 series being heavier and larger due to additional features and capabilities.
Compliance and Warranty: The instruments comply with safety and EMC standards such as EN61010 and EN61326, with a product warranty of one year.
Specifications and Measurement Accuracy: The RM3545 resistance meter is designed for high-precision measurements from micro-ohms (µΩ) to mega-ohms (MΩ). It supports a maximum measurable current of 1A and offers a basic accuracy of 0.02%. The device can record up to 1,000 data points and is suitable for temperature-rise tests with interval measurement capabilities.
Measurement Errors and Conditions: Several factors affect measurement accuracy, including leak current, measurement speed, offset voltage, and temperature. For instance, a reading error is introduced based on the measurement current, especially when guarding is used. The effect of measurement speed is significant when the integration time is not a whole-number multiple of the power supply cycle. Temperature coefficients are applied for measurements outside the 18°C to 28°C range.
Temperature Measurement: The RM3545, in combination with the Temperature Sensor Z2001, provides temperature measurement accuracy within a range of -10.0°C to 99.9°C. The standalone instrument accuracy is ±0.2°C, with specific accuracy adjustments based on temperature ranges.
Instrument Configurations and Options: The RM3545 is available in several configurations, including models with GP-IB and multiplexer unit support. Accessories include power cords, clip type leads, temperature sensors, and various communication cables. Proper operation requires the use of test leads with guard terminals.
Usage Recommendations: For optimal performance, it is recommended to use the specified test leads and accessories. The RM3545 is ideal for maintenance and testing of large equipment due to its portable design and high precision.
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Catalog excerpts

HIOKI RM3544/RM3548 RESISTANCE METER-1

RESISTANCE METER RM3545/RM3544 Component measuring instruments Featuring super-high accuracy and multi-channel capabilities (20 channels with 4-terminal measurement) Basic accuracy : 0.006% No. of display digits: Max. 6.5 Max.resolution : 0.01µΩ ( LP) 0.01mΩ High-accuracy bench-top meter ideal for production lines Basic accuracy : 0.02% Max.resolution : 1µΩ

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HIOKI RM3544/RM3548 RESISTANCE METER-2

Choose from two models based on your application Super-high accuracy and multi-channel capabilities High-precision bench-top meter for advanced development and production applications for both manual operation and integration with automatic lines Resistance measurement Basic accuracy : 0.006% Low power resistance measurement Basic accuracy : 0.2% Applications Small-signal contacts Motors, solenoids, choke coils, transformers, wire harnesses Contacts, wire harnesses, relay contacts, switches Conductive rubber, paint Multi-contact resistance measurement (motor and transformer windings) Fuses, resistors,...

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HIOKI RM3544/RM3548 RESISTANCE METER-3

Multi-point measurement with the Multiplexer Unit Z3003 (20 locations with 4- terminal measurement) RM3545-02 Scanning measurement using the Multiplexer Unit Z3003 is convenient in applications that require multi-contact measurement, for example when testing network resistors, steering switches, or 3-phase motor windings. Simply insert a Z3003 unit into one of the slots on the back of the RM3545-02 to enable scanning measurement of up to 20 locations* with 4-terminal measurement. (*When using two Z3003 units, up to 42 locations can be measured with 2-terminal measurement.) Testing a connector...

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HIOKI RM3544/RM3548 RESISTANCE METER-4

Simplifying high-accuracy resistance measurement Standard features of the high-accuracy Resistance Meter RM3545 and RM3544 Convenient wide range options Measurement resistance range [Ω] Overview of the RM3545 Integrate into automated inspection systems Manual testing on production lines 0.01µΩ max. resolution, 0.006% basic accuracy 1µΩ max. resolution, 0.02% basic accuracy The RM3545 can perform resistance measurement with a 6.5-digit, 1,200,000-count display at a maximum resolution of 0.01 μΩ. It delivers more than enough capabilities to be used in applications requiring highresolution resistance...

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HIOKI RM3544/RM3548 RESISTANCE METER-5

Super-high-accuracy, multi-channel resistance meter for use in advanced development and production applications Key Features of the RM3545 Low-power (LP) resistance measurement The RM3545 can perform measurement at a resolution of 10 μΩ at 1 mA (using the 1,000 mΩ range). With an open-terminal voltage of 20 mV or less, the instrument is ideally suited for measuring the contact resistance of chip inductors and signal contacts. The RM3545 converts resistance measured values into DC voltage for output. This capability is convenient when continuously recording changes in resistance, for example as...

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HIOKI RM3544/RM3548 RESISTANCE METER-6

Easy-to-use RESISTANCE METER suits both manual operation and integration with automatic lines High-intuitive advanced functionality Guard terminals Minimize the effects of external noise on measurements. * GUARD terminal is the shield potential. This terminal is not for guarding network resistance measurements. Simple control over basic settings Range and measurement speed can be controlled directly. Functionality for saving and loading panels The RM3545 (RM3544) can save and load up to 30* (10) sets of range, comparator, and other settings. Naming each set of panel data lets you make setup changes...

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HIOKI RM3544/RM3548 RESISTANCE METER-7

Easy integration into automatic testing equipment (RM3545/-01/-02, RM3544-01) Ability to extend measurement cable length The new instruments feature better wiring resistance tolerances than previous models (the 3541 and 3540). Wiring resistance can now be as high as 1.5 Ω for the RM3545 and 2 Ω for the RM3544. High-speed, comprehensive productivity support • The RM3545 and RM3544 -01 deliver the speed demanded by automatic testing equipment at a sophisticated level. The entire process from the start of measurement to outputting of the judgment result takes as little as 1.9ms (RM3545) and 18 ms...

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HIOKI RM3544/RM3548 RESISTANCE METER-8

Connecting the instrument to a computer via RS-232C or USB • Use a PC to control RM3545 and RM3544 -01 functions as well as acquire measurement results. (This capability does not include turning the instrument on and off or configuring certain interface settings.) • Connect the instrument to a commercially available RS-232C printer to print measured values, including judgment results. • Measured values can be automatically output. By using the instrument’s USB keyboard mode, measured values can be entered into applications such as spreadsheets and text editors without the need to install a special...

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HIOKI RM3544/RM3548 RESISTANCE METER-9

Product warranty: 1 year Measurement method Range switching Temperature correction Zero-adjustment Trigger Measurement speed Delay Measurement fault detection functions Averaging Panel store, panel load D/A output EXT I/O Communication interfaces Communication interfaces RS-232C USB Printer (RS-232 port) Operating temperature and humidity Storage temperature and humidity Operating environment Power supply Rated power consumption Insulation withstand potential Dimensions Mass Accessories Applicable standards Resistance measurement: 0.000 00mΩ (10mΩ range) to 1200.0MΩ (1000MΩ range), 12 ranges...

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HIOKI RM3544/RM3548 RESISTANCE METER-10

Measurement accuracy Conditions of guaranteed accuracy • Temperature & humidity: 23 ˚C ±5 ˚C, 80% rh or less (non-condensating) • From 0°C to 18°C and from 28°C to 40°C, add (temperature coefficient ±[1/10 measurement accuracy] / °C). • Guaranteed Accuracy Period: 1 year • RM3545 only: Warmup time of 60 min. or greater (If less than 60 min., double figures in the accuracy table to obtain the measurement accuracy.) • RM3545 only: self-calibration AUTO * During temperature correction, the value calculated below is added to the rdg. error for resistance measurement accuracy: t 0 : Reference temperature....

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.