RKI RX-515 Multigas portable gas detector for LNG tanker


Riken Keiki Logo


LNG Carrier Storage Vessel Gas Monitor RX-515 (Discontiued)


Dual range detection of CH4 or HC in %vol and %LEL.
Unique gas combinations include: CH4/O2/CO/CO2/HC/O2/H2S
Accurately measure CH4 or HC from inerted tanks with infrared sensor.
High range H2S 0-1,000ppm available (RX-517).
Intrinsically safe design.
Datalogging (Max 30 hours of interval trend).


The LNG Carrier model is a combination type portable CH4, O2, CO and CO2 gas detector with an Infrared (NDIR) type sensor, galvanic cell type sensor and Electro-chemical cell type sensor. These sensors provide accurate detection of CH4, O2, CO and CO2 levels even in N2 and other inert environemnts. The measuring ranges are 0-100%LEL / 0-100%vol for CH4, 0-25%vol for O2, 0-1000ppm for CO and 0-20.0%vol for CO2 respectively. The RX-515 has an explosion proof and Intrinsically Safe design so that it can be used safely in any environment.


LNG Carrier Storage Vessel gas monitoring

Catalog Riken Keiki RKI RX-515 RX-516 RX-517



Riken Keiki

The RIKEN KEIKI (KRI) product lineup includes more than 100 types of gas detectors and environmental monitoring products. Riken Keiki (RKI) Single gas detector range: 
  • 03 Series Smallest Single Gas Monitor
  • GasWatch 3 – Smallest Gas Monitor
  • 04 Series Smallest Toxic Gas Monitor
  • FP-31 Formaldehyde Gas Detector
  • SP-220 Gas Leak Checker for Combustible, Toxic, Freon and Fumigation Gases
  • SC-8000 Portable Toxic Gas Monitor
Riken Keiki (RKI) Multi-gas detector range: 
  • GX-3R Personal Gas Detector
  • GX-3R Pro Gas Detector with Wireless Communication
  • GX-6000 PID Gas Monitor
  • GX-2012 Confined Space Gas Monitor
  • GX-2009 Portable Multi Gas Detector
  • Gas Tracer PPM Leak Detector
  • Eagle 2 Multi Gas Detector for LEL, O2, H2S, CO, VOC & Toxics
  • Eagle Gas Detector
Riken Keiki Logo


Gas Detected

Methane (CH4)

Oxygen (O2)

Detection Principle NDIR Galvanic cell Electro-chemical cell
Detection Range (digit) 0~100%LEL
5-100%vol (0.5%vol)
0-25 vol% (0.1%vol) 0-1000 ppm
0-2%vol (.01%)
2-5%vol (.05%)
5-20%vol (.1%)
Operating Temp. & Humidity

-10°C ~ + 50°C (14 to 122°F),
below 90%RH, non-condensing
Safety Rating
Exiad II BT3X (Alkaline batteries “Size C” only), KIMM approved,
MED approved, with “Wheel mark”
(Certificate No. 15520/A0EC)
Power Source 4 “C” Alkaline dry cell batteries
Continuous Operation Approx. 30 hours (no alarm or light, at 25ºC)
Display Digital LCD (with back light)
Alarm Types
Gas Alarms: Standard …OFF
(optional ..1st and 2nd user adjustable, self-resetting)Trouble Alarms (self diagnosis): Sensor connection, low battery, circuit trouble and calibration error
Dimensions & Weight Approx. 80 (H) x 200 (W) x 142 (D) mm (3.1” H x 7.9” W x 5.6″ D), approx. 1.8 kg (4 lbs)
Special Functions
Peak hold, Datalogging
Standard Accessories
    • Carrying case with shoulder strap
    • Filter tube with flow monitor and junction tube
    • Gas sampling hose
    • Gas sampling probe
    • Alkaline battery (4 “C” size)
    • CO2 scrubber
    Instruction manual

Specifications subject to change without notice.




There are no reviews yet.

Be the first to review “RKI RX-515 Multigas portable gas detector for LNG tanker”

You may also like…