Empowering Safety
Across Industries
Discover the unique gas detectors & monitors that set us apart from the competition
Special Website for
Featured Products & Solutions
The reliability backed by Riken Keiki's legacy since 1939
in the field of gas detection
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“OIML R140 Class A”
Real-time monitoring
The world’s only high accuracy gas calorimeter, OHC-800, by novel sensor solution.
Ex-proof gas calorimeter -
“200°C(392°F) Resistance”
NMP direct detection
Fits in high-temperature environments such as furnace exhaust ducts.
in lithium ion fab -
“From Production to Utilization”
Our sensor lineup
A broad product lineup for the hydrogen market, which is attracting increasing attention.
for a hydrogen society -
“260+ Sensor Lineup”
Specialized for
No.1 share in Japan! Can be used in all processes in semiconductor plants.
semiconductor fab. -
“Packed with Features”
RIKEN’s most premium
High-performance, multi-functional gas detection for larger and more sophisticated plant facilities.
gas detector ever -
“DMF Detection Here”
RIKEN accommodates to
Outstanding performance in safety measures for high boiling point solvent drying facilities.
rare gas detection -
“Unmatched Service for Marine”
Overhaul your
Use the gas detectors properly to protect crew members from vessels accidents.
gas detectors from here! -
“Your Tailored Gas Analyzer”
Real-time Gas Monitoring System
Combining high-precision gas sensors enables us to create a customized analyzer with only the essential features you need.
is available now! -
“Small in Size, Big in Quality”
Up to 5 gas portable detector
Multi gas monitors made by RIKEN KEIKI that can be used in a variety of sites and applications.
in your hand -
“One Device, Multiple Roles”
Sustainable built-in-pump
GX-FORCE supports you in achieving sustainable operation from the perspective of gas detectors, unlike disposable ones.
4 gas detector
FLOWCustomer Inquiry Process
FREE
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① Inquiry and consultation
First, please send us your inquiry using the contact form.
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② Assessment
We will try to understand the challenges you are currently facing or requirements you may have.
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③ Proposal through your local Riken partner
Based on your requirements, we will propose a suitable solution/system and cost estimate through your local Riken Distribution partner
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④ PO and Delivery
If you are satisfied with the proposal and estimate, please place your order to your local Riken distributor and we will fulfill it accordingly.
About us
for reliable and complete support
Utilizing our established overseas network, you could purchase
our product and services all over the world.
RIKEN KEIKI Co., Ltd.
Since our company was founded in 1939 under the umbrella
conglomerate of RIKEN, our management philosophy has been to
create safe working environments. Our science and technology
research laboratories have developed industrial gas detection
warning devices, specializing in monitoring harmful gases in the
work environment, as well as for explosion prevention from
combustible gases. Without compromise, we continue to challenge
ourselves to be technological leaders, developing and
manufacturing a wide range of industrial gas detection systems
and monitors. From large-scale gas detecting alarm systems to
small-sized personal gas monitors for safety protection; used in
many industries including semiconductor and LCD plants,
petroleum complexes, steelworks, various tankers, oil storage
stations, underground gas facilities, and volcanoes.

Experts in gas detection for over 80 years
The “RIKEN Gas Detector” utilizing the principle of light wave interference, was exhibited at the 1937 Paris World Exposition. Its subsequent use greatly contributed to the prevention of accidents in coal mines where many fatalities were prevalent at the time. On the 15th March 2019 we celebrated our 80th anniversary. Supported by our history and tradition we shall further improve long established technology, and continue to innovative. Developing reliable quality products in response to the diverse needs of industry.