About RKI | RKI

Who We Are

RKI is partnered with Riken Keiki Company, Ltd., the world leader in gas detection and sensor technologies.

A Letter from our President

Dear Customer,

RKI Instruments, Inc. is an innovative gas detection company located in Union City, California. RKI was established in 1994 by Bob Pellissier and Sandra Gallagher with the belief that customers and distributors deserve a reliable source for advanced gas detection equipment as well as solutions to specific gas monitoring applications.

RKI is partnered with Riken Keiki Co. Ltd., the world leader in gas detection and sensor technologies. In business for over 80 years, Riken has sold over 1,800,000 portable and fixed gas monitors worldwide with annual sales exceeding $220 million. They have over 700 employees, a large number of which are engineers and scientists. RKI is the exclusive North American supplier of Riken products.

Every year, RKI has continued to achieve a high level of growth which is attributed to our sales and support of Riken products and the ability to develop our own line of products around Riken’s long lasting sensors. This capability of sales, support, and development is made possible by our seasoned professionals. Each RKI employee has an average of 14 years of gas detection experience, and the top 8 executives combined industry experience totals over 240 years.

This combination of quality products and knowledgeable supportive people provides you with the ability and opportunity to confidently face almost any gas monitoring application, with equipment built to last. When you call RKI, you will get solutions and answers to your gas detection needs. RKI is ISO 9001 certified.

RKI provides Gas Detection for Life. Not only will our equipment protect your life and property from the hazards of gases and vapors, but with proper care, it may also be the last gas detector you will ever need to purchase.

Sincerely,

Bob Pellissier
President

Our History

Celebrating over 80 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.

1938

Riken develops first combustible gas monitors based on catalytic sensors, Interferometer.

1938

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

1978

Riken introduces the world’s first 3 gas monitor (LEL, O2, CO) with alarm, Model 1641.

1980

First pocket sized monitors from Riken, Models OX-80, CO-80, and HS-80

1982

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

1983

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

1984

Riken offers a portable IR monitor for Freon detection, RI-413.

1986

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

1990

Riken introduces the first super toxic gas monitor, SC-90.

1994

RKI Instruments, Inc. becomes Riken Keiki’s North American partner with the introduction of is the GX-94, four gas, portable gas monitor with datalogging and auto calibration.

1995

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

1997

GasWatch, the first wrist worn multi-gas monitor for O2, CO, or H2S.

1999

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

2001

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

2001

The worlds smallest 4 gas monitor, GX-2001.

2003

Five sensor sample drawing personal monitor that measures % LEL and % volume methane, GX-2003.

2005

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

2009

The smallest confined space 4 gas monitor, GX-2009

2010

Six gas portable monitor with PID capability, EAGLE 2

2012

Five gas sample draw with 3 operating modes and auto-ranging display of % LEL and % volume, GX-2012 multi gas monitor

2015

Six gas sample draw with PID, IR, and super toxics, GX-6000 multi gas monitor

2016

Leak checker for 40+ Gases fumigants, toxics, freons, and combustibles, SP-220

2017

Benzene Specific PID available for GX-6000

2018

MSHA GX-2009 available with NO2 Sensor

2019

GX-3R, world’s smallest 4-gas monitor / GX-3R Pro smallest 5-gas monitor with bluetooth connectivity for phone app, RK Link

2020

The GasWatch 3 is the world’s smallest and lightest single-gas and dual-gas monitor. Weighing just 1.6 ounces, its compact form affords great comfort and flexibility in how you choose to wear it.

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