Hioki

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Overview

HIOKI E.E. CORPORATION designs, manufactures, and sells electrical measuring instruments, including testers, meters, and data recorders, used in industries such as electrical maintenance, electronic component testing, electric vehicle development, and solar power generation.¹² The company maintains a global presence with subsidiaries in 11 countries and distributors in over 30, where overseas sales exceed 60% of total revenue.⁴ It is listed on the Tokyo Stock Exchange and focuses on proprietary technologies for high-value products.¹²⁴

History

Founded in June 1935 by Mizo Hioki in Tokyo, producing indicating electrical instruments.¹⁴ Incorporated as HIOKI E.E. CORPORATION in January 1952, securing a large U.S. MIL-standard multi-tester order.¹⁷ In the 1970s-1980s, developed clamp power meters, waveform recorders, and automatic testing equipment; went public in 1991 and listed on Tokyo Stock Exchange First Section in 2003.⁴⁵ Expanded globally since 1998 with overseas subsidiaries.⁴⁵

Product Lines

Product Line	Positioning	Price Range
Power Meters (clamp-type)	Non-invasive electrical power measurement	$300 - $2,500
Multi-Testers (digital multimeters)	Versatile electrical parameter testing	$150 - $1,800
Memory HiCorder (waveform recorders)	High-speed data acquisition and analysis	$1,000 - $10,000
Battery Testers	EV and rechargeable battery evaluation	$2,000 - $15,000
Flying Probe Testers	Ultra-high-speed PCB automated testing	$20,000 - $100,000
Maintenance Instruments	Field electrical equipment inspection	$200 - $3,000

Manufacturing

Products are developed and manufactured primarily at the headquarters in Ueda, Nagano, Japan, with a focus on proprietary technologies and in-house production.¹²⁴ The company has built its manufacturing foundation through mass production of instruments like VU meters and testers since the mid-20th century.⁴

Notable Products

Clamp Power Meter - First in Japan (1978) for safe, non-contact power measurement during energy crises.
Memory HiCorder - Waveform recording device anchoring high-speed data capture products.
Multi-Tester - MIL-standard models produced since 1952 for U.S. military specs.
Flying Probe Tester - Ultra-high-speed automated tester for electronic components.
Battery Tester - Solutions for EV and energy storage battery development and testing.

Reputation

Hioki is regarded by professionals in electrical engineering and testing for reliable, innovative instruments tailored to R&D, manufacturing, and maintenance needs.²³ Strengths include long-term focus on electrical measurement expertise and global support network.⁴ Criticisms are minimal in available sources, though some note premium pricing reflective of specialized Japanese engineering.¹²

Sources (7)