Riken Keiki Co., Ltd. engages in research, development, manufacturing, sales and after-sales maintenance of industrial gas detection and alarm equipment and analyzers in Japan and internationally. The company products include portable gas detector and monitor, gas detector with signal converter, smart type gas detector head, personal single gas monitor model, portable multi and single point gas monitor, fixed gas detector, gas suction pump unit for GX-3R,GX-3R Pro, toxic gas and oxygen detector head, gas analyzer, explosion-proof calorimeter, optical interterometric gas concentration meter, SF6 purity meter, pyrolyzer unit, suction type gas detector head, smart transmitter / gas detector, portable gas leak checker, gas detection alarm system, multipoint and single point indicator/alarm unit, highly sensitive toxic gas monitor, infrared CO2 gas monitor, pump unit, gas analyzer, single and portable toxic gas monitor, portable O2 monitor, CO2 monitor, and portable combination gas detector. It also offers AC-2S/5/3/2 series analyzers. Riken Keiki Co., Ltd. was incorporated in 1934 and is headquartered in Itabashi, Japan.