Yokogawa Electric Corporation (横河電機株式会社 Yokogawa-denki Kabushiki-gaisha?) is a Japanese electrical engineering and software company, with businesses based on its measurement, control, and information technologies.
It has a global workforce of over 19,000 employees, 84 subsidiary and 3 affiliated companies operating in 55 countries. The company is listed on the Tokyo Stock Exchange and is a constituent of the Nikkei 225 stock index. Yokogawa pioneered the development of distributed control systems and introduced its Centum series DCS in 1975.
Some of Yokogawa's most recognizable products are production control systems, test and measurement instruments, pressure transmitters, flow meters, oxygen analyzers, and fieldbus instruments.