long deployments
RBRsolo³ DO, Tu, and PAR: single-channel loggers
The RBRsolo³ instruments can integrate a selection of third-party sensors, such as dissolved oxygen, turbidity, and PAR. Low power consumption, large memory, and ability to endure harsh conditions make the RBRsolo³ instruments a perfect choice for many oceanographic applications.
- Long deployments
- Compact and lightweight
- One AA battery (alkaline or lithium iron)
- USB-C download
- Cabled RBRcoda³ variants available

Features & Configurations
The RBRsolo³ instruments with DO, Tu, and PAR sensors facilitate optimal measurement schedules, whether moored, towed, or profiling.
Large storage capacity and reliable battery power facilitate long deployments with higher sampling rates. Downloads are quick with USB-C.
A dedicated holder makes it simple to replace desiccant before each deployment.
The calibration coefficients are stored with the instrument, and only one software tool, Ruskin, is required to operate it. Datasets can be read directly in Matlab, or exported to Excel, OceanDataView®, or text files.
Optional Configurations
RBRsolo³ DO (OxyGuard®) | dissolved oxygen, depths up to 1700m |
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RBRsolo³ Tu (Seapoint®) | turbidity, depths up to 1700m |
RBRsolo³ PAR (LI-COR®) | photosynthetically active radiation, depths up to 560m (cosine) / 350m (spherical) |
Specifications
Storage | 240 thousand (Tu) 130 million (DO and PAR) |
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Power | One AA battery (alkaline or lithium iron) |
Communication | USB-C |
Clock drift | ±60 seconds/year |
Housing | Plastic |
Depth rating | 1,700m (Tu and DO) 560m/350m (PAR) |
Diameter | 25.4mm |
Length |
~330mm (Tu) |
Calibrated range | 0 to 600% |
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Initial accuracy | ±2% O2 saturation (5°C to 25°C) |
Resolution | 1% of saturation |
Response Time | ~10s, 90% step change at 20°C |
Depth rating | 1700m |
Sampling rates | 1s to 24h and 2Hz (standard) 2, 4, 8, 16, or 32Hz (| fast) |
Time Constant | <0.1s |
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Linearity | <2% deviation 0-1250FTU |
Depth rating | 1700m |
Sampling rates | 10s to 24h |
Measured waveband | 400-700nm |
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Calibrated range | 0-10000μmol/m2/s |
Initial accuracy | ±2% |
Depth rating | 560m (cosine) 350m (spherical) |
Sampling rates | 1s to 24h and 2Hz (standard) 2, 4, 8, 16, or 32Hz (| fast) |
