RKI Instruments is the exclusive North American partner of Riken Keiki, the Japanese pioneer in gas detection. Founded in 1994 by Bob Pellissier and Sandra Gallagher and headquartered in Union City, California, RKI serves as the bridge between Riken Keiki’s 80+ years of sensor innovation and the unique safety demands of North American industries. The company is ISO 9001 certified and provides solutions for almost any gas monitoring application—from confined space entry to fixed system integration in petrochemical plants.

The product portfolio spans portable multi-gas detectors (including the GX-3R—the world’s smallest 4-gas monitor, and the GX-Force with a 100-foot sample draw pump), portable single-gas monitors, fixed gas detection controllers (Beacon 110, 200, 410, and 800 series), fixed detector heads and transmitters for combustible and toxic gases, and wireless gas detection systems for remote monitoring and SCADA integration. RKI’s gas detection equipment is trusted across industries including oil and gas, fire and HazMat response, utilities, water and wastewater treatment, construction, and general industrial safety—anywhere personnel and property must be protected from hazardous gases and vapors.