Dissolved Oxygen Sonde: Rinko FT

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Introduction

The RINKO series is based on the optical (phosphorescence) principle which is now widely known as a remarkably fast response oxygen sensor with a high accuracy. As a new member of the RINKO family, the RINKO FT (model name: ARO-FT, AROD-FT) had overcome a well-known tradeoff between fast responsivity and stability of oxygen sensing foils. The RINKO FT not only retains the fast response time identical to that of conventional RINKO series but also has greater accuracy and stability by incorporating high-quality multipoint calibration and improved sensing method. The RINKO FT is primarily designed to target Argo float operations. However, its compact, lightweight, and commonly used communication protocol widen the choice of platforms for installation. The RINKO FT enables DO measurements with a high spatial resolution, which will contribute to the understanding of new aspects of physical/biochemical processes.

Features

  • Fast response (63%: less than 1s in water)
  • Multipoint factory calibration
  • High accuracy
  • Long-term stability
  • Easy installation to various platforms

Additional information

Measurement principle

DO: Phosphorescence, Temp: Thermistor

Range

DO:1)Concentration: 0 to 425 μmol L-1 Air saturation: 0 to 200% (calibration range: 0 to 120%), Temp: -3 to 45 ℃ (calibration range: 0 to 35 ℃)

Resolution

DO: 0.01 μmol L-1, Temp: 0.001 ℃

Response time (63%) (at 25 ℃, typical)

<1s (in water)

Sampling interval

1s (shorter interval at request)

Material

Housing: Titanium, Insulating attachment: POM

Weight

In air: 265 g with standard mounting attachment and 50 cm cable, In water: 162 g (design value)

Pressure rating

2000 dbar (higher rating at request)

Brand

JFE Advantech