
Standard loggers
Measure more, deploy longer, download faster.
Our standard instruments can integrate one to ten channels, including third-party sensors, and thus meet any of your unique requirements, be it acoustic surveys, coastal and deep ocean studies, tide and wave monitoring, tsunami warning systems, hydrography, water quality, or profiling applications. Select a configuration that fits your needs and enjoy stable, accurate measurements during long deployments.
Measure one or two parameters
RBRvirtuoso3 and RBRduo3
Single- and dual-channel loggers
Features
- 240M readings
- Up to 32Hz sampling
- USB-C download
- Twist activation
- Wi-Fi option
- | fast, | tide, | wave variants
- External power option

Available sensors:
Conductivity (C), Temperature (T), Pressure (D), Dissolved Oxygen (DO), Optical Dissolved Oxygen (ODO), Photosynthetically Active Radiation (PAR), Radiometer (rad), Turbidity (Tu), Backscatter (bb), Fluorescence (Fl), pH, Oxidation-Reduction Potential (ORP), Methane, Carbon Dioxide, Transmittance, Voltage
Popular Models
Measure salinity
RBRduo3, RBRbrevio3, RBRconcerto3
C.T, C.T.D, and more
Features
- 240M readings
- Standard sampling of 2Hz
- Up to 32Hz sampling
- USB-C download
- Twist activation
- Wi-Fi option
- Realtime communications

Available sensors:
Conductivity (C), Temperature (T), Pressure (D), Dissolved Oxygen (DO), Optical Dissolved Oxygen (ODO), Photosynthetically Active Radiation (PAR), Radiometer (rad), Turbidity (Tu), Thermistor string (Tx), Fluorescence (Fl), Backscatter (bb), pH, Oxidation-Reduction Potential (ORP), Methane, Carbon Dioxide, Transmittance, Voltage
Note: The RBRbrevio³ is strictly a CTD instrument.
Popular Models
Measure five to ten parameters
RBRmaestro3
Multi-channel logger
Features
- Five to ten integrated channels
- 240M readings
- Up to 16Hz sampling
- USB-C download
- Twist activation
- Wi-Fi option
- Realtime communications

Available sensors:
Conductivity (C), Temperature (T), Pressure (D), Dissolved Oxygen (DO), Optical Dissolved Oxygen (ODO), Photosynthetically Active Radiation (PAR), Radiometer (rad), Turbidity (Tu), Backscatter (bb), Fluorescence (Fl), pH, Oxidation-Reduction Potential (ORP), Methane, Carbon Dioxide, Transmittance, Voltage
Popular Models
Measure with high accuracy
RBRquartz3
High stability and low drift
Features
- Quartz stability
- High accuracy
- Long deployments
- Up to 240M readings
- Up to 16Hz sampling
- USB-C download
- Realtime communications

Popular Models
Measure tides and waves
RBRvirtuoso3, RBRduo3, RBRquartz3 Q
Tide and wave loggers
Features
- Flexible tide averaging
- Low frequency wave detection
- Intermittent and continuous burst
- 240M readings
- Up to 16Hz sampling
- USB-C download
- Twist activation
- Wi-Fi option

Popular Models
Measure temperature
RBRconcerto3 Tx
Thermistor strings
Features
- 240M readings
- USB-C download
- Up to 24 thermistors
- Up to 400m in length

Popular Models
Third party sensors
Sensor | Manufacturer | Max. depth (m) | Calibrated Range | Measurement Range | Accuracy |
---|---|---|---|---|---|
Dissolved Oxygen | OxyGuard | 2000 | 0-100% | 0-600% | ±2% |
Dissolved Oxygen (4831F) | Aanderaa Optode | 2000/3000/6000 | 0-120% | 0-300% | ±1.5% |
Dissolved Oxygen (4531) | Aanderaa Optode | 100 | 0-120% | 0-300% | ±5% |
Dissolved Oxygen | fast | JFE Alec | 6000 | 0-200% | 0-200% | ±2% |
Fluorometer (Chlorophyll) | Turner Designs (auto-ranging) | 600 | 0–200μg/L | 0–500μg/L | ±5% |
Fluorometer (Rhodamine) | Turner Designs (auto-ranging) | 600 | 0–800ppb | 0–1000ppb | ±5% |
Fluorometer (CDOM) | Turner Designs (auto-ranging) | 600 | 0–3000ppb | ||
Fluorometer (Crude oil) | Turner Designs (auto-ranging) | 600 | 0-100ppb | 0–1500ppb | ±5% |
Fluorometer (Chlorophyll a) | Seapoint (auto-ranging) | 6000 | 0–150μg/L | ±2% | |
Fluorometer (UV) | Seapoint (auto-ranging) | 6000 | 0–1500μg/L | ||
ORP (RedOx) | AMT | 750/1200/6000 | 240–470mV | +/- 2000mV | ±1mV |
PAR (quantum/cosine) | LI-COR | 560 | 0-10000μmol/m²/s | ±5% | |
PAR (spherical) | LI-COR | 350 | 0-10000μmol/m²/s | ±5% | |
PAR (5 decades)(quantum/cosine) | BioSpherical | 2000 | 0-5000μmol/m²/s* | ±2% | |
PAR (spherical) | BioSpherical | 2000 | 0-5000μmol/m²/s* | ||
pH | AMT | 750/1200/6000 | 4–10pH | 0–14pH | ±0.1pH |
Transmissometer (410, 465, 520, or 650nm) | Wetlabs C-Star | 600/6000 | 0-100% | 0-100% | |
Turbidity (OBS, TSS) | Turner Designs (auto-ranging) | 600 | 0-400NTU | 0-1500NTU | ±2% |
Turbidity (S, R) | Seapoint (auto-ranging) | 6000 | 0-400NTU (S-channel) | 0-1250FTU, 0-20000NTU |
*Converting from µE to µmol of photons with 1:1 conversion.

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