What We Do

Hioki is a manufacturer of electrical measuring instruments that supports the development of industry

Electrical measuring instruments, known as the “mother tools” of industry, play an essential role in research and development, manufacturing, maintenance, and service. They also continue to contribute to social progress, mirroring developments in technology as their designers anticipate the changing needs of the times.

Providing new value through unique technologies

Hioki has pursued unique technologies over its history so that it can provide new value to customers through high-quality products.
For about 40 years after our founding in 1935, our business centered on volume production of meters and testers. Starting in 1974, we modernized our management and pursued an aggressive R&D program that yielded today’s four product groups. The result has been a distinctive portfolio that includes no-metal-contact voltage measurement technology, high-sensitivity current measurement technology, and other innovative technologies. Going forward, we will continue to embrace the challenge of uniqueness so that we can leverage our accumulated expertise to further improve technologies in areas such as sensing, high-frequency measurement, and electrochemistry; create new tentpole product groups; and contribute to society.

Supporting applications ranging from R&D to maintenance and service with four product groups

Hioki offers four product groups: automatic test equipment, data recording equipment, electronic measuring instruments, and field measuring instruments. Collectively, these products are used in an extensive range of industries and fields, from research and development to facility and equipment maintenance and service.

Automatic Test Equipment

Testing of electronic circuit boards and boards with embedded active and passive devices

Quality control testing of electronic circuit boards used in smartphones, computers, and other high-tech products

Data Recording Equipment

Development of electrical devices and monitoring to detect equipment malfunctions

Analysis of electrical signal waveforms to verify that various devices and systems are being controlled properly

Electronic Measuring Instruments

Testing of electronic components and batteries, energy conservation, and evaluation of power supply quality

Evaluation of the efficiency of motors and inverters; evaluation of the frequency characteristics of coils and capacitors

Field Measuring Instruments

Electrical work and maintenance and inspection of electrical equipment

Measurement of voltage, current, and insulation resistance in order to maintain equipment at sites such as power receiving and distribution facilities