RI-415 Series (Discontinued)

Discontinued Product, please see RX-8000


  • Available to measure from higher concentration (vol%) to lower concentration (%LEL)
  • Explosion proof (Detector: Explosion proof, other electrical circuit and pump, intrinsically safe design)
  • Available to measure HC or CH4 in N2 or inert gas with a reliable NDIR method


This model is a portable HC or CH4 detector with an Infrared (NDIR) type sensor. This sensor style provides accurate detection of HC or CH4 gas levels even in N2 and inert environment. The measuring ranges are 0-100 Volume% and 0-100% LEL, with automatic ranging. The RI-415 has explosion proof and Intrinsic safety construction so it can be used safely in any environment


  • Measures gas concentrations in tank of LNG carriers and LPG carriers
  • Measurement of gas concentrations in crude oil tanker


RI-415 (HC version) RI-415 (CH4 version)
Gas Detected


Detection Principle NDIR (Non-Dispersive infrared)
Detection Range 0~100%LEL
0-100vol% vol(auto)
Increments 0.5%LEL
Indication Accuracy within ± 5% of reading
Response Time within 30 seconds (T90)
Sampling Method Built in sample pump
Ambient Temp/Humidity

-10°C ~ + 40°C(14 to 104°F), below 90%RH, non-condensing
Continuous Operation Approx. 50 hours (no alarm or light, at 20ºC)
Power Source 4 “C” Alkaline dry cell batteries or optional Ni-Cad
Dimensions & Weight Approx. 80 (H) x 200 (W) x 142 (D) mm (3.1” H x 7.9” W x 5.6″ D), approx. 2 kg (4.4 lbs)
Standard Accessories
  • Carrying case with shoulder strap
  • Alkaline battery (4 “C” size)
  • Absorbent cotton
  • 1 m coiled hose
Optional Accessories
  • Metal storage box
  • Calibration kit with gas sampling bag
  • Sampling line with couplings (30m)
  • Plastic filter (absorbent cotton), flow monitor, and connection line with couplings Calibration gas cylinder for CH4 LEL
  • Calibration gas cylinder for CH4 VOL
  • Calibration gas cylinder for HC LEL
  • Calibration gas cylinder for HC VOL

Specifications subject to change without notice.


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