Our History | RKI Instruments

Our History

RKI is partnered with Riken Keiki Company, Ltd., the world leader in gas detection and sensor technologies. Celebrating over 65 years in the gas detection business, Riken has over 150,000 points of detection world wide in the semiconductor industry alone. RKI is the exclusive North American supplier of Riken products.

2005

RKI purchases a new building for the cooperate headquarters located at 33248 Central Ave, Union City California

 
2003

Riken introduces the GX-2003, five-sensor sample drawing personal monitor, measures % LEL and % volume Methane.

 
2001

Riken introduces the GX-2001, worlds smallest 4 gas monitor.

 
2000

RKI develops and begins shipping the Diffusion Eagle. 550,000 portable and fixed gas monitors sold to date by Riken Keiki.

 
1999

Riken introduces the GD-K77D smart transmitter with greatly simplified calibration and maintenance.

 
1998

RKI develops the Beacon 100 and 800 controllers. The Eclipse, NIC stand alone transmitter is also introduced with unique optical controls.

 
1997

Riken offers the GasWatch, the first wrist worn multi- gas monitor.

 
1995

RKI and Riken together develop and introduce the first 6 gas portable monitor, the EAGLE.

 
1994

In a joint venture, RKI Instruments, Inc. becomes Riken Keiki’s North American Partner. Also unveiled is the GX-94 four gas portable with datalogging and auto

 
1991

Riken introduces the 4 gas monitor GX-91B. Also, the OX-62B single gas O2 with extender cable, and the SC-90 super toxic portable.

 
1982

Riken presents the GX-86, world’s first 4 gas, belt worn portable monitor.

 
1980

Riken offers the RI-413, portable IR unit for Freons

 
1978

Riken introduces RI-411, portable IR unit for CO2.

 
1971

Riken introduces the world’s first 3 gas, belt worn monitor, the GX-82.

 
1969

Models OX-80, CO-80, and HS-80 become the first pocket size monitors from Riken.

 
1959

Riken introduces the world’s first 3 gas monitor with alarm, model 1641.

 
1939

Riken begins OEM sales to the USA with portable and fixed gas monitors.

 
1927

Riken builds the first combination combustible and oxygen portable gas monitor with alarm model GX-3.

 
1925

Riken develops combustible gas monitors based on catalytic sensors.