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Creating safe working environments
 * TOP
 * Combining high-precision sensor technology
 * Customer inquiry process
 * Growing interest in hydrogen
 * Hydrogen sensor application example
   * Hydrogen production
   * Hydrogen transportation
   * Hydrogen usage
   * Hydrogen power generation
 * Case Study
 * About us

Presentation Download
Inquiry Form

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RIKEN KEIKI GAS SENSOR TECHNOLOGY FOR DECARBONIZATION

 * Purity
   monitoring

 * LEL /
   leak detection

 * Explosion-proof
   function

 * Custom
   measurement

Presentation Download
Inquiry Form

SOLUTION


COMBINING HIGH-PRECISION GAS SENSOR TECHNOLOGY TO SUPPORT DECARBONIZATION

RIKEN KEIKI’s patented technologies are integrated into a number of its gas
sensors, and by combining these sensors together, it is possible to measure gas
in a variety of situations.


MEASUREMENT PERFORMANCE FOR METHANATION

Methanation, the conversion of H2 and CO2 into methane, the main component of
natural gas, is an extremely effective technique in helping realize
decarbonization.

It is necessary to monitor the concentrations of H2, CO2, and CH4 generated
during the methanation process.

Presentation Download

Inside RIKEN KEIKI’s OHC-800 are two kinds of sensors: an optical sensor and a
sonic sensor. By employing RIKEN KEIKI’s very own Opt-Sonic calculation method,
which was originally conceived to measure the calorific values of fuel gas, the
OHC-800 can derive both the concentrations of H2, CO2, and CH4, and the
calorific value of the mixed gas, all within one unit.


MEASURING THE TOTAL AMOUNT OF CARBON IN FLARE GAS

To move ahead with decarbonization, it is necessary to know how much CO2 is
generated when flaring gas.

From figuring out the amount of CO2 that is released during gas flaring to
helping find ways of recycling flare gas into usable energy (fuel gas), you will
find a solution to your problem in RIKEN KEIKI’s gas measurement system.

Presentation Download

Our gas measurement system combines three high-precision sensors to measure the
composition of flare gas and contributes to the reduction of CO2 emissions.

RIKEN KEIKI has over 600 gas sensors and over 100 gas detectors. RIKEN can
provide product combinations that are appropriate for your specific situation
and address your problems. We also offer customized solutions. Get in touch with
us and find out how our products can work for you.

FLOW


CUSTOMER INQUIRY PROCESS

 * FREE
   
   
   ① INQUIRY AND CONSULTATION
   
   First, please send us your inquiry using the contact form.

 * FREE
   
   
   ② ASSESSMENT
   
   We will try to understand the challenges you are currently facing or
   requirements you may have. Please feel free to ask about cost, lead time, or
   other issues you may be unsure about.

 * FREE
   
   
   ③ PROPOSAL AND ESTIMATE
   
   Based on your requirements, we will propose a suitable solution/system and
   cost estimate through your local Riken Distribution partner


 * 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.

FREE

Inquiry Form


CASE STUDY

Gas detector for hydrogen carriers

RIKEN KEIKI has a hydrogen gas detector that complies with IEC standards, as
well as a full lineup of detectors for gases other than hydrogen. They can also
provide maintenance services anywhere in the world.

Stable methanation

In the process of synthesizing hydrogen and CO2, we need to monitor if it is
proceeding as it theoretically should. With RIKEN KEIKI’s OHC-800, we can
accurately measure individual concentrations of H2, CO2, and CH4, and the
calorific value of the mixed gas, all with one device. It also has a fast
response time, which is useful for real-time monitoring of the production
process.

Flare gas composition analysis

For decarbonization to progress, there is a need to recycle flare gas and
capture the carbon from that gas. What we needed first was a simple system to
monitor the amount of carbon in our flare gas. After consulting with RIKEN
KEIKI, they provided us with a composition analysis performed by the dual-sensor
configuration. RIKEN KEIKI's system is explosion-proof and capable of continuous
measurement, but not as expensive as an analyzer. For those reasons, we believe
that this was the right measurement system for our worksite.

Analyzing gas generated from an IGCC furnace

Apart from being able to measure calorific values using alternative physical
quantities, the OHC-800 is easy to maintain and capable of continuous
measurement, which, we think, also makes it well suited as a control device. Not
only that, by adding extra sensors, it can measure concentrations of the main
components of gases generated by an IGCC system, so it checked all the boxes we
were looking for in terms of performance.

Hydrogen sensor for vehicles

In hydrogen vehicles, water is generated when producing energy using hydrogen,
so we believe a sensor that can be used even in a high-humidity environment is
necessary. The FHD has a heater function, and because it is a sensor that can be
used even in environments where humidity could be high, it is useful as an
automotive sensor.

High-concentration CO2 sensor

A good lineup of products to choose from. The OHC-800 has a good track record of
working in CCS (carbon capture and storage) plants. CCS utilizes off-gases from
oil after H2 and CO2 have been removed from them. The OHC-800 is also capable of
analyzing the original composition of off-gas. We were looking for something
that was simple (inexpensive, easy to measure) and could measure these things
and came across the OHC-800.

Gas detector for hydrogen carriers

RIKEN KEIKI has a hydrogen gas detector that complies with IEC standards, as
well as a full lineup of detectors for gases other than hydrogen. They can also
provide maintenance services anywhere in the world.

Stable methanation

In the process of synthesizing hydrogen and CO2, we need to monitor if it is
proceeding as it theoretically should. With RIKEN KEIKI’s OHC-800, we can
accurately measure individual concentrations of H2, CO2, and CH4, and the
calorific value of the mixed gas, all with one device. It also has a fast
response time, which is useful for real-time monitoring of the production
process.

Flare gas composition analysis

For decarbonization to progress, there is a need to recycle flare gas and
capture the carbon from that gas. What we needed first was a simple system to
monitor the amount of carbon in our flare gas. After consulting with RIKEN
KEIKI, they provided us with a composition analysis performed by the dual-sensor
configuration. RIKEN KEIKI's system is explosion-proof and capable of continuous
measurement, but not as expensive as an analyzer. For those reasons, we believe
that this was the right measurement system for our worksite.

Analyzing gas generated from an IGCC furnace

Apart from being able to measure calorific values using alternative physical
quantities, the OHC-800 is easy to maintain and capable of continuous
measurement, which, we think, also makes it well suited as a control device. Not
only that, by adding extra sensors, it can measure concentrations of the main
components of gases generated by an IGCC system, so it checked all the boxes we
were looking for in terms of performance.

Hydrogen sensor for vehicles

In hydrogen vehicles, water is generated when producing energy using hydrogen,
so we believe a sensor that can be used even in a high-humidity environment is
necessary. The FHD has a heater function, and because it is a sensor that can be
used even in environments where humidity could be high, it is useful as an
automotive sensor.

High-concentration CO2 sensor

A good lineup of products to choose from. The OHC-800 has a good track record of
working in CCS (carbon capture and storage) plants. CCS utilizes off-gases from
oil after H2 and CO2 have been removed from them. The OHC-800 is also capable of
analyzing the original composition of off-gas. We were looking for something
that was simple (inexpensive, easy to measure) and could measure these things
and came across the OHC-800.

Gas detector for hydrogen carriers

RIKEN KEIKI has a hydrogen gas detector that complies with IEC standards, as
well as a full lineup of detectors for gases other than hydrogen. They can also
provide maintenance services anywhere in the world.


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HYDROGEN ENERGY


HYDROGEN IS RECEIVING WORLDWIDE ATTENTION IN THE DRIVE TOWARDS A CARBON FREE
SOCIETY



WIDE RANGE OF PRODUCTS FOR HYDROGEN

Hydrogen holds great potential as a key solution in the global transition to
clean energy, and RIKEN KEIKI’s hydrogen sensing technology is playing an active
role in various industries. We have a wide range of hydrogen-related products to
cover all kinds of scenarios, whether it be production, storage, transport,
supply, or usage.


HYDROGEN SENSOR APPLICATION EXAMPLE IN A HYDROGEN SUPPLY CHAIN/PLATFORM


HYDROGEN PRODUCTION




FI-900

Continuous measurementFast responseNO sensitivity degradationExplosion-proof
structure
Product details


OHC-800

Continuous measurementFast responseNO sensitivity degradationExplosion-proof
structure
Product details


SD-1(TYPE NCW)

Diffusion-typePPM LEL Wide-rangeSelf-diagnosticConcentration display
Product details


SD-D58(TYPE NCW)

Suction-typePPM LEL Wide-rangeSelf-diagnosticConcentration display
Product details


FI-8000

Built-in pump or hand aspiratorHigh accuracyPortable
Product details


SP-220

Built-in pump or hand-aspirator selectableHigh accuracyPortable
Product details


HYDROGEN TRANSPORTATION




SD-1(TYPE NCW)

Diffusion-typePPM LEL Wide-rangeSelf-diagnosticConcentration display
Product details


SD-D58(TYPE NCW)

Suction-typePPM LEL Wide-rangeSelf-diagnosticConcentration display
Product details


SP-220

Built-in pump or hand-aspirator selectableHigh accuracyPortable
Product details


HYDROGEN USAGE




FHD-752

Hydrogen vehicle leak check sensorWide operation temperature rangeQuick
startupEarly low-concentration gas detection
Product details


SD-1(TYPE NCW)

Diffusion-typePPM LEL Wide-rangeSelf-diagnosticConcentration display
Product details


SD-D58(TYPE NCW)

Suction-typePPM LEL Wide-rangeSelf-diagnosticConcentration display
Product details


HYDROGEN POWER GENERATION




OHC-800

Continuous measurementFast responseNO sensitivity degradationExplosion-proof
structure
Product details


FI-900

Continuous measurementFast responseNO sensitivity degradationExplosion-proof
structure
Product details


SD-1(TYPE NCW)

Diffusion-typePPM LEL Wide-rangeSelf-diagnosticConcentration display
Product details


SD-D58(TYPE NCW)

Suction-typePPM LEL Wide-rangeSelf-diagnosticConcentration display
Product details


GX-3R

Wearable around the breathing zoneSmall, lightweight, monitor up to 4
gasesIP66/68 water and dust resistanceLoud 95 dB alarm buzzer
Product details


SP-220

Built-in pump or hand-aspirator selectableHigh accuracyPortable
Product details
Extensive international network
for reliable and complete support

Utilizing our established overseas network, you could purchase
our product and services all over the world.

 * Affiliated company
 * Distributor




ABOUT US

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.

Company name: RIKEN KEIKI CO., LTD.

Headquarter: 2-7-6 Azusawa, Itabashi-Ku, Tokyo 174-8744 Japan

TEL: +81-3-3966-1113
Major Products:
 * Combustible gas detection
 * Oxygen deficiency / enrichment gas detection
 * Toxic gas detection
 * Multi-Gas detection equipment
 * Environmental Measurement Instruments
 * Gas Calorimeter
 * Other devices or apparatus

Development & Production Base: Development Center: 2-3 Minamisakaecho, Kasukabe
City, Saitama 344-0057 Japan Production Base:
 * RIKEN KEIKI NARA MFG. Co., Ltd.: 49-1 Abe, Sakurai City, Nara 633-0054 Japan
 * Hakodate Factory (Toi): 938-1 Oyasucho, Hakodate City, Hokkaido 041-0251
   Japan

Privacy Policy

Copyright© 2021 RIKEN KEIKI CO., LTD. All Rights Reserved.


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FI-900
Purpose Gas concentration monitoring Detector model FI-900 Main measuring gases
H2, CO2, CH4, Ethanol, etc.
Custom-tailored solutions available
(please contact us) Measuring range Custom-tailored solutions available
(please contact) Advantages
 * ・Capable of detecting more than 80 types of gases
 * ・High accuracy
 * ・ATEX/IECEx

Benefits
 * Minimal degradation in sensor sensitivity thanks to a physical optical sensor
 * Simple, 3-unit modular structure allows for easy maintenance
 * Designed to suit your various requirements with its ability to measure and
   control gas concentrations, measure purity, prevent explosions, and more!

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OHC-800
Purpose Gas concentration and/or calorific value monitoring Detector model
OHC-800 Main measuring gases ・Natural gas-hydrogen mixed gas
・Methanation (detects individual gas concentrations of H2, CH4, and CO2, and the
calorific value of the mixed gas)
・Custom-tailored solutions available (please contact) Measuring range
Custom-tailored solutions available (please contact) Advantages
 * ・Fast response: T90 ≦ 5 s
 * ・High accuracy: +/-0.4% of indicated value (for natural gas)
 * ・Continuous measurement (data updated every 0.25 s)

Benefits
 * Minimal degradation in sensor sensitivity thanks to a physical optical sensor
 * Simple, 4-unit modular structure allows for easy maintenance
 * Designed to suit your various requirements with its ability to measure gas
   concentrations, monitor gas calorific values, and more!

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SD-D58･DC(TYPE NCW)(ATEX･IECEx)
Purpose Leak check & explosion prevention(two-in-one) Detector model
SD-D58･DC(TYPE NCW)(ATEX･IECEx) Main measuring gases Hydrogen and other
combustible gases Measuring range PPM (user-specified) & 0–100% LEL(two-in-one)
Advantages
 * ・Built-in pump suction type
 * ・Concentration display
 * ・ATEX/IECEx
 * ・Two-in-one detection(PPM & LEL)

Benefits
 * Equipped with a high-performance pump
 * Equipped with a low flow rate detection sensor to notify of failures
 * Wide detection range supported
 * Early gas detection at PPM level
 * Self-diagnostic function displays error codes and notifies the user in the
   event of a malfunction.

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SD-1(TYPE NCW)(ATEX･IECEx)
Purpose Low-concentration combustible & toxic gas detection. Provides
measurements for indoor environments. Detector model SD-1(TYPE NCW)(ATEX･IECEx)
Main measuring gases Hydrogen and other combustible gases Measuring range
PPM(user-specified) & 0–100% LEL (two-in-one) Advantages
 * ・Diffusion-type
 * ・Concentration display
 * ・ATEX/IECEx
 * ・Two-in-one detection(PPM & LEL)

Benefits
 * Wide detection range supported(please contact)
 * Early gas detection at PPM level
 * Self-diagnostic function displays error codes and notifies the user in the
   event of a malfunction.

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FHD-752
Purpose Leak check for hydrogen vehicles Detector model FHD-752 Main measuring
gases Hydrogen Measuring range 0–20,000 ppm or 0–40,000 ppm Advantages
 * ・Internal heater allows for use in high-humidity conditions
 * ・Operation temperature range is from -35℃ to 100℃
 * ・Startup time: under 500 ms
 * ・IP67

Benefits
 * Sense danger early by detecting low-concentration gases
 * Not susceptible to interference from HC, H2S, N2, CO, CO2, and NOx in the air
 * Usable in cold regions thanks to an internal heater
 * Carbon filter to remove silicone

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SP-220 Type H2
Purpose Hydrogen leak check Detector model SP-220 Type H2 Main measuring gases
Hydrogen Measuring range PPM level (bar meter display) Advantages
 * ・Small, lightweight, and tough body
 * ・Fast, accurate detection of low-concentration gases

Benefits
 * Easily check for leaks in rooms or around pipe flanges
 * Sense danger early by detecting low-concentration gases

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GX-3R
Purpose Worker safety Detector model GX-3R Main measuring gases Combustible (H2
and others), H2S, CO, and O2 (for Type A) Measuring range Combustible (H2 and
others): 0–100% LEL, H2S: 0–200 ppm, CO: 0–2000 ppm, O2: 0–40 vol% Advantages
 * ・Small, lightweight, and can monitor up to 4 gases
 * ・Robust design: IP66/68 (2 m, 1 h), cleared 7 m drop test
 * ・Wide range of functions and optional accessories

Benefits
 * Small and light enough to attach to a worker’s helmet or chest, allowing them
   to work more safely
 * Ruggedly designed to be used in any working environment and sounds a 95 dB
   alarm (at 30 cm)
 * Equipped with the latest technology, including new sensors and features, to
   ensure worker safety

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FI-8000
Purpose Gas purity check Detector model FI-8000 Main measuring gases Hydrogen
and others(please contact) Measuring range 0-100vol% Advantages
 * ・High accuracy
 * ・Built-in pump or hand aspirator-type selectable
 * ・Data logging function

Benefits
 * Portable and allows for immediate, on-the-spot purity checks
 * Optional filters(water, dust, etc.) available