Riken Keiki
A Tokyo-based maker of gas detectors, including fixed detectors that monitor toxic and combustible gases in industrial facilities.
理研計器・Equipment・Last updated: October 23, 2026
Overview
Riken Keiki is headquartered in Itabashi, Tokyo. Its SD-3 series are explosion-proof fixed gas detector heads that continuously monitor combustible and toxic gases and oxygen, with diffusion, sampling, remote and duct insertion types and certifications such as Japan Ex, IECEx and ATEX.
Business: Gas detection systems
Why it matters
Semiconductor fabs use many toxic and flammable gases, so gas detection is part of basic fab safety infrastructure.
Main products
- •Fixed gas detectors (SD-3 series)
Sites in Japan
Head officeHeadquarters
Itabashi, Tokyo
Products (1)
- SD-3 series (gas detector heads with signal converter) · Gas detection systems