Ocean and River Instruments

YODA Profiler

The YODA profiler (“Yoing” Ocean Data Acquisition Profiler) is a “tow-yo” instrument to profile the water column with high spatial resolution from small boats without occupying much space. The instrument is provided with a deployment winch and sensors measuring conductivity, temperature, pressure, chlorophyll, turbidity and dissolved oxygen. The brush at the top of the instrument allows for a stabilizing effect on the free-fall sinking speed, which is approximately constant at 0.2 m/s. All data are stored internally and downloaded into a PC through a wet-connector and interface.

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Sensor Specifications

Parameters Method Range Accuracy Resolution Response
Depth semiconductor 0 to 600m ±0.3%FS 0.01m 0.2s
Temperature thermistor -3 to 45℃ ±0.01℃
(0 to 35℃)
0.001℃ 0.2s
Conductivity 7 electrodes 0.5 to
70mS cm-1
±0.01mS cm-1
(28 to
65mS cm-1)
0.001mS cm-1 0.2s
Salinity PSS-78 2 to 42 0.001 0.2s
DO phosphorescence 0 to
20mg L-1
(0 -200%)
0.001 to
0.004 mg L-1
(0.01 to
(in air, 1atm,
25℃, 63% of
Chlorophyll fluorescence 0 to
400 ppb
(0 drift ±0.1ppb)
0.01ppb 0.2s
Turbidity backscatter 0 to
1000 FTU
±0.3 FTU
or ±2%
0.03FTU 0.2s

Logger Specifications

Measurement mode Depth trigger Time trigger
Interval 0.1, 0.2, 0.5 and 1.0 m 0.1 to 600 s
Storage medium 1GB internal flash memory
Recording capacity 1000 profiles (100m, 0.1m interval) Approx. 8.000.000 samples
Power Rechargeable lithium-ion battery (available 10-hour operation)
Material Titanium (grade 2)
Dimensions Φ440mm×550mm (including battery)
Weight 6kg (in air)
Depth rating 600m
Acessories Ballast for falling speed adjustment

Interface Specifications

Power AC 100 to 240V or 4 AA Alkaline batteries
Dimension 170mm×169mm×66mm
Weight Approx. 1kg

Winch Specifications

Components Main body, controller and bobbin
Load Max. 30kg
Rewind Speed 110 to 120r.p.m
Power DC 24V
Material Stainless steel
Weight approx. 11kg
Dimension 360mm×430mm×(max.)480mm
Rope φ3mm×300m (polyethylene)
YODA Profiler winch

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

Ocean and River Instruments

  • JFE Advantech
  • Service and Support Phone:+81-798-66-1783 Fax:+81-798-66-1654
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