Measurement Instruments for Maintenance & Inspection
Choose your measuring equipment to get the job done.
HIOKI offers a comprehensive selection of effective electrical maintenance and servicing equipment. Measurement tools designed for daily use in the field help you to minimise downtimes, operate systems optimally and extend the service life of your machines. Rely on the quality of field-proven instruments from HIOKI - for sustainable and safe maintenance of your electrical systems.
Recommended maintenance measurement tools
BT3554-52
BT3554-52 - Portable Battery Tester, L2020 Angled Pin Type Lead
Portable battery tester for DC voltage, AC resistance at 1 kHz and temperature. Two voltage ranges (6V and 60V), four resistance ranges (3 mΩ to 3 Ω). Angled pin type lead, optional Bluetooth communication
CM4375-50
CM4375-50 - AC/DC Clamp Multimeter, 1000 A
The CM4375-50 is a 1000A True RMS AC/DC clamp meter, designed with a special slim clamp for easy access to tight spaces. It is suitable for use in environments rated CAT III 1000V, CAT IV 600V, and features IP54 protection. The meter provides a comprehensive range of measurement functions, including voltage, current, resistance, frequency, capacitance, inrush current, max/min/avg/peak values, continuity test, diode test, automatic AC/DC detection, DC current, and DC voltage polarity detection, among others. With the optional P-2000 accessory, the DC voltage measuring range can be extended to 2000V. The device is also prepared for Bluetooth communication, with the Z3210 module required for wireless data transmission. Technical Details: Measuring range: 1000A (True RMS AC/DC) Measurement functions: Voltage, current, resistance, frequency, capacitance, inrush current, max/min/avg/peak, continuity test, diode test, automatic AC/DC detection, DC current, DC voltage polarity detection Measurement categories: CAT III 1000V, CAT IV 600V Environmental protection: IP54 Additional features: Bluetooth communication-ready (Z3210 module required) Optional accessory: P2000 (extends DC voltage range to 2000V)
CM4003-90
CM4003-90 - AC Leakage Clamp Meter, Bluetooth
The CM4003-90 is a True RMS AC leakage meter with a measuring range of 6mA to 200A and a frequency range of 15 to 2000 Hz. It accommodates conductors up to 40 mm in diameter. The CM4003 offers advanced features such as Max/Min/AVG/PEAK MAX/PEAK MIN value display, display hold and auto-hold, backlight, automatic current saving mode, acoustic signal (buzzer), event display, comparator, simple event recording, and inrush current measurement. In addition, the CM4003 is equipped with a Waveform/RMS output function, allowing the recording of available signals with a memory recorder. The CM4003-90 is bundled with the Z3210 Bluetooth-Module wireless data transmission. Technical Details: Measuring range: 6 mA to 200 A Frequency range: 15 to 2000 HzCable diameter: Up to 40 mmKey functions: Max/Min/AVG/PEAK MAX/PEAK MIN, display hold, auto-hold, backlight, automatic power-saving mode, buzzer, event display, comparator, simple event recording, inrush current measurement Additional feature: Waveform/RMS output for signal recording with a memory recorder Wireless data transmission via Bluetooth using Z3210 moduleLearn more in our blog🔗 What’s special about HIOKI’s AC Leakage Current Clamps?
IR5051-90
IR5051-90 - Portable high voltage PV insulation tester with Z3210
Portable high voltage insulation tester with dedicated PV function and Bluetooth, insulation testing up to 5 kV and 10 TΩ, PV testing up to 2000 V even during power generation, IP65 rated, CAT III 2000 V
MR8880-20
MR8880 - Portable Memory Recorder, 4 Channels
The MR8880 is a 4 channel portable data acquisition system (DAQ) with a maximum sampling rate of 1Msamples/s on all analog channels simultaneously.
It has 4 analog direct input channels for voltages up to 600V and 8 logic channels.Technical Details: Complies CAT III 600V isolation for direct measure of 480V power line 4 complete isolated channels Operating temperature range of -10°C to 50°C Built to withstand mechanical shocks and vibrations PRESET function A memory capacity of 14bit × 1 M words/ch (1 word = 2 bytes)
DT4256-20
DT4256-20 DIGITAL MULTIMETER
The DT4256-20 is a general-purpose digital multimeter that offers versatile measurement capabilities, including 10A direct input for AC/DC current and voltage (True RMS), resistance, and capacitance. Additional features include continuity testing and diode testing. The multimeter is equipped with convenient functions such as automatic range selection, a filter function, a hold function for display values, auto-hold, and MAX/MIN/average value display. It also supports relative value display and includes an auto power-saving function (APS). For added flexibility, USB communication is available via an optional adapter. Using an optional current clamp, the current measuring range can be extended to 1000A. The multimeter is rated for measurement categories CAT III 1000V and CAT IV 600V, ensuring safety across various applications. Technical Details: Measurement functions: 10A AC/DC current, voltage (True RMS), resistance, capacitance, continuity, diode test Additional features: Automatic range selection, filter function, display hold, auto-hold, MAX/MIN/average value display, relative value display, auto power-saving function (APS) Communication: USB (optional adapter required) Current range extension: Up to 1000A (with optional current clamp) Safety categories: CAT III 1000V, CAT IV 600V
PQ3198-94
PQ3198-94 - Power quality analyzer kit with 4 flexible current clamps
The Hioki PQ3198-94 Kit is a complete solution for monitoring and analyzing power quality. Equipped with all essential accessories, it enables professionals to perform high current measurements up to 6000 A in demanding electrical systems.
PW3365-20
PW3365 - Non-contact power logger with voltage and current sensors
Non-contact 3-phase 4-wire Clamp-on Power Logger, 90 V to 520 V at 50/60 Hz, 50 mA to 5 kA using external current sensors, harmonic measurement up to the 13th order, SD memory card slot (max. 8 GB), LAN and USB interface
RM3548-50
RM3548-50 - Portable Resistance Meter
Handheld four-wire DC milliohm meter, test current range 500 nA to 1 A, ten resistance ranges from 3 mOhm to 3 MOhm, backlight display, optional Bluetooth communication
Accurate and Safe Measurements with HIOKI’s AC Leakage Current Clamps
Accurate AC leakage current measurement is key to electrical safety, identification of insulation faults, and meeting standards. HIOKI leakage current clamps are high-performers: from field-proven accuracy and 0.060 mA resolution to true RMS performance and advanced filter functions in a user-friendly design. In maintenance, EV charging tests, or building diagnostics, HIOKI’s leakage current clamps deliver fast and reliable results.
