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Portable optical DO meter (ARO-PR) [new]

The Portable optical DO meter makes use of the fast-response optical DO sensor RINKO, maintaining its high-speed response performance (99% response < 7sec). The meter probe is equipped with a temperature sensor close to the sensing foil, and the measurements are made by simply inserting the probe into a DO sample bottle (the calibration is carried out using the National Metrology Institute of Japan (NMIJ) certified traceable gases standards). Differently from galvanic electrode sensors, the instrument does not require water sample stirring or fixing reagents, since there is no oxygen consumption. Thus, the required time to estimate dissolved oxygen is considerably reduced. The display unit shows the output instantaneously, and you can check the measured values in real time.

* This instrument was developed in collaboration with the Japanese Agency for Marine-Earth Science and Technology (JAMSTEC).

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Sensor Specifications

Parameter DO Temperature
Range 0 to 20mg L-1
0 to 625μmol L-1
(0 to 200% of saturation)
-3 to 45℃
Repeatability ±0.1%FS ±0.002℃
99% of response* 7 s 2 s
Initial accuracy ±1% RD or ±1.5μmol L-1
(0 to 500 μmol L-1)
(0 to 35℃)
Dimensions Φ13mm×158mm (metal part)
Cable length 1m
Pressure resistance suitable for IPX7 (for 30 minutes)

*Value measured by the instrument prototype

Display Specifications

Memory capacity 512MB
Battery Rechargeable lithium battery/1,700mAh
Continuous usage 9 h
Communication USB (Ver2.0 and Ver1.1)
Water resistance suitable for IPX5
Weight 580g *battery included (battery: 95g±10g)



Response time

Response time

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

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