Riken Keiki offers over a hundred different models of gas detection and environmental measurement products.

We continue to refine the technologies established through our history while investigating and improving the quality and technical capabilities of the products we provide. Riken Keiki instruments are designed and manufactured to respond to diverse industrial requirements and applications. Customers rely on them to detect and prevent disasters rapidly and precisely.

New product development involves the continual improvement and refinement of existing products, as well as active collaboration with our customers as a matter of course.
 
PORTABLE GAS DETECTION :
     
FIXED GAS DETECTOR :
 
     
COMBUSTIBLES / OXYGEN / TOXIC GAS DETECTOR AND MONITOR :
  Combination type portable HC/O2 gas detrector model: RX-415
This model has two versions and is a combination type portable HC/O2 or CH4/O2 gas detector with an Infrared (NDIR) type sensor and galvanic cell type sensor.
Applications
• Measures gas concentrations in tank of LNG and LPG carriers
• Measures gas concentrations in crude oil tankers
• Measures gas concentration in inert gas generating system (IGS)
PORTABLE INFRARED HC GAS DETECTOR MODEL RI-415
Intrinsically safe explosion-proof structure
Application
•Prevents LNG and LPG explosions in reception bases and tankers
   
  MARINE COMBINATION GAS DETECTOR MODEL RX-515 SERIES
MED approved, with "Wheel mark" Intrinsically safe explosion-proof structure
MODEL RX-515 : LNG carrier application - CH4/O2/CO/CO2
MODEL RX-516 : Crude oil tanker application - HC/O2/H2S
MODEL RX-517 : Crude oil tanker application - HC/O2/H2S (Low range) / HC/O2/H2S (High range)
Application
•Measurement of CH4, O2, CO2 of LNG Vessel 
•Measurement of HC, O2, H2S of Oil Tanker
   
  FOUR GAS PERSONAL MONITOR MODEL GX-2001
CSA approved/PTB 02 ATEX 2021/JML APPROVED Intrinsically safe explosion-proof structure
Application
•Personal Use
   
  PORTABLE CONTINUOUS GAS MONITOR MODEL GX-3000
Intrinsically safe explosion-proof structure
Application

• Most suitable for temporary equipment
• Ensures the safety of sewage disposal plants, garbage processing plants, and manhole work
• Prevents gas accidents in underground works in tunnel, shield constructions, etc.
   
  Portable Combustible Gas Detector Model : GP-88A
Features:

• Dual expanded scale with automatic suction
• Meter illuminated in dark places
• Peak hold function & earphone jack provided
• Low battery alarm
   
  Combustible Gas Detector Model : NP-237H
Features
• Portable hydrocarbon gas detector
• Suited for detection of HC gas/vapours in an inert gas
• 4 measuring ranges (%LEL and %vol)
• Catalytic combustion and thermal conductivity
• MED approved (Wheelmark)
   
  Combustible Gas Detector Model : GP-226
GP-226 RIKEN combustible gas detector, range 0-100% LEL / complete with standard accesories
Features
• Dual expanded scale with automatic suction
• Simple design with small size & light weight
• Large size analog meter
• Intrinsically safe in Japan
   
  Combustible Gas Detector Model : GX-111
GX-111 RIKEN combustible gas detector
Specifications
• Measurable range : 0-100% LEL
• Alarm point :   30% LEL
• Operating temp : -10C - +40C
• Batteries : Dry Battery * 4 pcs.
   
  Combustible Gas Detector Model : GX-7
GX-111 RIKEN combustible gas detector
Specifications
• Measurable range : 0-100% LEL
• Alarm point :   30% LEL
• Operating temp : -10C - +40C
• Batteries : Dry Battery * 4 pcs.
   
  NON-DISPERSIVE INFRARED RAY ABSORPTION (NDIR) SMART TRANSMITTER WITH ALARM RELAY/INFRARED GAS DETECTOR MODEL SD-705 SERIES
Infrared type, Approved explosion-proof model
·SD-705GP ·SD-705NC ·SD-705GH
·SD-705EC ·SD-705RI
Application
•Prevents explosions caused by gas leakage in oil refineries and petrochemical plants
•Prevents LNG and LPG explosions in reception bases and tankers
•Prevents explosions in dryer furnaces of press companies and tape factories
   
  NON-DISPERSIVE INFRARED RAY ABSORPTION (NDIR) SMART IR GAS DETECTOR / TRANSMITTER
MODEL SD-805 SERIES

Pressure-proof, explosion-proof structure
·SD-805GP ·SD-805NC ·SD-805GH
·SD-805EC ·SD-805RI
Application
•Prevents explosions caused by gas leakage in oil refineries and petrochemical plants
•Prevents LNG and LPG explosions in reception bases and tankers
•Prevents explosions in dryer furnaces in printing factories and tape factories
   
  SINGLE CHANNEL HC GAS MONITOR FOR ACCOMODATION SPACE
MODEL : GP-641A-GD-A8
Applications
• Crude oil gas vapor and HC gas vapor leak detection in oil carrier.
• LNG vapor leak detection in gas carries.
• LPG vapor leak detection in gas carrier.
   
  EXPLOSION-PROOF OXYGEN DETECTOR MODEL GD-F44
Pressure-proof, explosion-proof structure
Application
•Monitors oxygen concentrations in hollowed-out areas (tunnels), underground areas, and areas for civil works; general fire-prevention system
• Monitors oxygen concentrations in confined spaces
• Monitors oxygen leaks from oxygen-consuming equipment
• Prevents accidents due to low-oxygen conditions in chemical plants
   
  H2S & O2 MONITOR FOR CARGO PUMP ROOM
MODEL : GD-F4A for O2
Intrinsic safety design
• Detection gas : Oxygen ZO2X in air
 
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