Riken Keiki RX-8700 Sample Drawing Portable Multi Gas Monitor for Cargo Monitoring on Crude Oil Tankers


The Riken Keiki RX-8700 Portable Multi Gas Monitors are designed for measuring multiple gases in inert or air atmospheres. Their main application is aboard  and Crude Oil marine tankers. They also find uses in Oil storage depots, Tank farms, Petrochemical plants and Oil refineries. They replace and improve upon the very successful RX-516/517 family.

Users typically use them to measure gas concentrations in tanks or piping during inerting/purging and tank maintenance work. Their advanced sensor technology gives accurate gas measurement even in Nitrogen (N2) and other inert environments.


Target Gas 

Combustible Gas (HC)Oxygen (O2) Hydrogen Sulphide (H2S) 
Detection Principal Non-Dispersive Infrared Galvanic Cell Electro-Chemical 
Detection Range 0-100% LEL / 0-100% Vol 



 Lo 0-30ppm Hi 0-1000ppm
Increments 0.5%LEL (0-100%LEL)


0.1% vol 





Samples Method Sample Draw 
Sampling Rate Minimum 0.75L/min
Display Digital LCD (7 segment + sign + bar display)
Power Supply Lithium-Ion Battery ( Standard )

Alkaline battery (AA battery x 3)( option)

Continous Supply Li-ion battery : Longer than 15 hours ( full charge, no alarm, no light at 25 Deg C)

AA Battery Unit : Longer than 8 hours ( new battery , no alarm, no light at 25 Deg C)

Operating temp and Humidity -20-+50 deg C , below 85% RH (Non-condensing )
Dimensions Approx 154(W) x 81(H) x 163(D) mm
Weight Approx 1.3kg ( Lithium battery type , 1.2kg Alkaline battery type)
Ingress Rating IP-67
Explosion Proof Intrinsically safe (Ex ia II CT4)(ATEX/IECEx)
Approvals ATEX/IECDx . TIIS . MED 
Other Functions LCD backlight , Datalogger , Log data , Peak Hold , Pump stop function
Transmission Method IrDA for Datalogger



  • Unique gas combinations : HC/O2/H2S (8700)

    Designed Specifically Crude Oil Tanker cargo Monitoring

  • RX-8700 has High Range H2S (0-1000ppm)

    Highest H2S range available ideal for High H2S Crude Oil monitoring

  • Accurately measure HC from inerted tanks with infrared sensor.

    Ideal for Cargo Monitoring

  • Autoranging IR sensor

    Dual range detection of HC in % vol and %LEL

  • Dual Pump Design

    Allows Auto-purge of high H2S circuit to prevent corrosive damage

  • Robust and intrinsically safe design

    ATEX and MED (wheel-mark) Marine Type Approval

  • State of the Art Lithium Ion battery.

    Both Long lasting and fast charging

  • IrDA communications port

    Down load data logger contents with optional Adapter and software

Riken Keiki RX-8700 Sample Drawing Portable Multi Gas Monitor

for Cargo Monitoring on Crude Oil Tankers
SKU: RX-8700
Call for pricing

Riken Keiki RX-8700 Sample Drawing Portable Multi Gas Monitor

Call for pricing
Picture of Fast Delivery

Fast Delivery

Next day delevery for shown as in stock orders placed before 1:00pm

Picture of Worldwide Shipping

Worldwide Shipping

Place a purchase order, Call or email to get an international shipping quote

Picture of Secure Online Purchasing

Secure Online Purchasing

SECURED BY SECTIGO (We do not accept AMEX)

Picture of Technical Support

Technical Support

Call or email to speak to a member of the technical team