Ocean and River Instruments

Digital output version optical fast DO sensor RINKO II / II D

Rinko II is a digital output version with a fast-response optical DO sensor. The instrument can be easily integrated on platforms, because it works with communications by RS-232C or RS-485 and an external power (12 to 24V DC).
Rinko IID has not only a temperature sensor but also a depth sensor. Their models can monitor DO in real time, if you have a personal computer and an external power.

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Sensor Specifications

Model name ARO-CAR/CAD ARO1-CAR/CAD (0 to 100m specification)
Parameter DO Temperature DO Temperature Depth
Principle Phosphorescence Thermistor Phosphorescence Thermistor Semiconductor
Range 0 to 200% -3 to 45℃ 0 to 200% -3 to 45℃ *0 to 50m(ARO 05)
0 to 100m(ARO 1)
0 to 200m(ARO 2)
0 to 500m(ARO 5)
Resolution 0.01 to 0.04% 0.001℃ 0.01 to 0.04% 0.001℃ 1/50,000 of range
Accuracy Non-linearity
(0 to 35℃)
(0 to 35℃)
Output RS-232C (-CAR)or RS-485 (-CAD)
Communication Handshake
Cable length 20m, standard
AD converter 16 bit digital conversion
Power External 12V DC External 12V DC
Current consumption 35mA 35mA
Housing material Titanium (grade 2) Titanium (grade 2)
Dimensions Φ54mm×184mm Φ70mm×173mm
Weight Approx. 0.5 kg in air, 0.3 kg in water Approx. 1.0 kg in air, 0.5 kg in water
Depth rating 1,000m depth equivalent 1,000m depth equivalent within maximum range of pressure sensor

* Select a depth rating. According to the depth rating, the model is changed.

*All the specifications are subject to change without notice. Please contact us for more information.

Ocean and River Instruments

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