Portable gas monitors
for the marine industry

More than 10,000 MED certified
instruments sold

MED certified

RIKEN KEIKI's portable gas monitors have been certified to the MED regulations.
Riken Keiki is one of the only gas detection manufacturers whose range of marine instruments are certified to the MED regulation.

It is mandatory for EU flagged vessels to comply with the MED Directive, and member states have an obligation to undertake market surveillance to ensure compliance.
Products certified as meeting requirements of Marine Equipment Directive 2014/90/EU will be accepted by all European and most non-European flag states.

RIKEN KEIKI's MED certified
products conform to SOLAS XI-1/7 regulation
for enclosed spaces, as required by
MED regulations since July 2017.

Product range

MED certified product range

Products that cover the majority of ship types and applications

GX-8000

Detail

RX-8000

Detail

RX-8500

Detail

RX-8700

Detail

GX-3R Pro

Detail

GX-3R

Detail

Comparison with other companies

Company	RIKEN KEIKI		Company A		Company B	Company C
Model	Internal pump	Optional pump	Internal pump	Optional pump	Internal pump	Internal pump
MED certification	Valid		Valid		Expired	Valid
Variety of models
Durability
Pump strength
Applications

RIKEN KEIKI

Model

RIKEN KEIKI

Internal pump

Optional pump

Company A

Internal pump

Optional pump

Company B

Internal pump

Company C

Internal pump
MED certification

RIKEN KEIKI

Valid

Company A

Valid

Company B

Expired

Company C

Valid
Variety of models

RIKEN KEIKI

Company A

Company B

Company C
Durability

RIKEN KEIKI

Company A

Company B

Company C
Pump strength

Internal pump

Optional pump

RIKEN KEIKI

Company A

Company B

（Expired）

Company C

（Option）
Applications

RIKEN KEIKI

Company A

Company B

Company C

Case Study

CASE01

Oil vessels

Challenges

Lack of certified MED instrument for all applications means multiple instruments required.
Management expense and additional costs incurred by possessing multiple instruments.
Long measurement time due to poor pump strength.

Riken Keiki’s MED Solution

RX-8700 enables multiple operations in one instrument.
Simplified workload.
Powerful pump enables fast measurement and improved work efficiency.

Usage:

[Assuring safety whilst underway]: In addition to HC/O2 measurement, measuring low concentrations of H2S inside water ballast tanks using its powerful pump.; Measuring O2 inside cargo tanks (to monitor inert state).; Measuring high concentration H2S in ullage space inside cargo tanks.

[Assuring safety whilst docked]: Detecting residual HC inside cargo tanks / measuring O2 concentration during inerting (gas-free / tank cleaning operation).

CASE02

LPG ships

Challenges

Riken Keiki’s MED Solution

RX-8700 is equipped with an infrared sensor that can maintain high accuracy even in inert gas.
The ability to measure from low to high HC concentration and H2S make the RX-8700 suitable for use in multiple operations.
Powerful pump enables fast measurement and improved work efficiency.

Usage:

[Assuring safety whilst underway]: Measuring low concentrations of HC / O2 / H2S inside water ballast tanks and other holds.; Measuring O2 inside cargo tanks (to monitor inert state).

[Assuring safety during loading operations]: Measuring HC in cargo tanks (loading area) and O2 (landing area).

[Assuring safety whilst docked]: Measuring HC / O2 inside the cargo tanks, and O2 level from the inert gas generator.

CASE03

LNG ships

Challenges

Riken Keiki’s MED Solution

RX-8500 is equipped with an infrared sensor that can maintain high accuracy even in inert gas.
The ability to measure from low to high CH4 concentration and CO / CO2 make the RX-8500 suitable for use in multiple operations.
Powerful pump enables fast measurement and improved work efficiency.

Usage:

[Assuring safety whilst underway]: Measuring low concentrations of CH4 / O2 inside water ballast tanks and other holds.; Measuring O2 inside cargo tanks (to monitor inert state).

[Assuring safety during loading operations]: Measuring CH4 in cargo tanks (loading area) and O2 (landing area).

[Assuring safety whilst docked]: Measuring CH4 / O2 / CO / CO2 inside the cargo tanks, and O2 / CO / CO2 level from the inert gas generator.

CASE04

General Safety applications on board vessels

Challenges

Lack of qualified MED instrumentation for all applications means multiple gas monitors are required.
Management expense and additional costs incurred by possessing multiple instruments.
Long measurement time due to poor pump strength.

Riken Keiki’s MED Solution

Simplified workload.
One GX-8000 can handle a wide variety of operations required by the ship classification rules.
Powerful pump enables fast measurement and improved work efficiency.
The world's smallest and lightest wearable monitor GX-3R is also available to ensure safe work after entry.

Usage:

[Securing safety when entering enclosed spaces]: Detecting HC / O2 / CO / H2S prior to entering a number of enclosed compartments such as cargo tanks, water ballast tanks and other hold spaces (in full compliance with the SOLAS XI-1/7 regulation).

CASE05

Bulk vessels

Challenges

To find single gas detector with pump able to detect multiple combustible gases.
Multiple instruments incur additional management costs
Long measurement time due to poor pump strength.

Riken Keiki’s MED Solution

GX series equipped with a catalytic combustion sensor can correspond to every gas measurement requirement of the IBC code.
Powerful pump enables fast measurement and improved work efficiency.
The world's smallest and lightest confined space monitor GX-3R ensures crew safety after entry.

Usage:

[Assuring safety whilst underway]: Measuring all gas types required to be detected inside bulk cargo (in-line with the IBC code).

Service Network

More than 50 Riken Partners convering all major European Ports , More than 100 Riken Partners convering all major Global Ports

Service network covering the world's major ports

We have a service network of more than 50 companies in Europe and more than 100 companies worldwide for Major European and Global ports. We can provide services such as product repair, parts supply and sales in all Major ports around the world.

More than 10,000
MED certified products sold.

RIKEN KEIKI, has been developing gas monitors for more than 80 years, and has built a strong and long lasting relationship of trust with many of our numerous clients. Among those products, we have sold more than 10,000 MED certified portable gas monitors. These help to support safe working on board vessels around the world.

Company

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.