Ueda, Nagano, Japan · Established 1935 · www.hioki.com

Company Overview

HIOKI E.E. Corporation, founded in 1935 and based in Ueda, Nagano, Japan, is a leading maker of electrical measurement instruments. Its range covers insulation and earth testers, power quality analysers, impedance analysers, battery testers, current probes and data loggers, serving electrical maintenance, manufacturing and R&D worldwide.

History

HIOKI began as a manufacturer of electrical meters in the mountain city of Ueda and grew into a comprehensive instrument maker. The company introduced generations of clamp meters and insulation testers that became standards in the electrical trade, and later built strong positions in power-quality analysis, component impedance measurement and battery evaluation — an area where its BT356x series became a de-facto standard for EV battery inspection.

Strengths

HIOKI instruments are known for reliability, safety (CAT-rated inputs) and practical accuracy at honest prices. Its current probe range is particularly complete, from DC-capable hall clamps to high-bandwidth AC sensors, all designed to integrate cleanly with its recorders and third-party oscilloscopes. Long product support and readily available calibration keep fleets in service for decades.

Product Portfolio

• AC/DC and AC current probes and clamp sensors for oscilloscopes and recorders
• Power quality analysers and power loggers
• Battery testers, impedance analysers and LCR instruments
• Insulation/earth testers, clamp meters and data loggers

Probemart / Jectronic Instruments is the authorised distributor of HIOKI in China. Contact us for datasheets, quotations and technical support.