RBRvirtuoso3: single-channel logger
RBRduo3: dual-channel logger
Our most flexible, option-packed loggers with one or two channels.
- 240M readings
- Up to 32Hz sampling
- USB-C download
- Twist activation
- Wi-Fi option
- | fast, | tide, | wave variants
- External power option


- RBRvirtuoso³
- RBRvirtuoso³ | deep
- RBRduo³
- RBRduo³ | deep
Available sensors:
Features & Configurations
The RBRvirtuoso³ and RBRduo³ instruments can integrate almost any sensor from RBR, offering high accuracy, flexible schedules, USB-C download, Wi-Fi communication, and twist activation. Variants with pressure, temperature, radiometer, PAR, and turbidity sensors are also available in titanium housing for deep applications (| deep), designed to endure harsh conditions.
The RBRvirtuoso³ and RBRduo³ instruments 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
- Wi-Fi communication
- External data and power connection via connectorised end-caps
- | fast8, | fast16, or | fast32 sampling for profiling
- | tide16, | wave16 variants with wave burst and tidal averaging
- | deep variants in titanium housing for depths up to 10000m
Specifications
Storage | 240M readings |
---|---|
PowerFootnote 1 | 8 AA cells |
External power | 4.5 to 30V |
Communication | USB-C or RS-232/485 |
Clock drift | ±60 seconds/year |
Housing | Plastic or titanium |
Diameter | 63.3mm (plastic), 60.3mm (Ti) |
Legth | Configuration dependent |
Weight | Configuration dependent |
Depth rating | Up to 10000m (configuration dependent) |
Sampling rate | 2Hz; options up to 32Hz (configuration dependent) |
(1) Lithium thionyl chloride batteries are only recommended for the RBRvirtuoso³ T, RBRvirtuoso³ D, RBRduo³ C.T, and RBRduo³ T.D. Use alkaline or lithium iron batteries for all other configurations.
Range | 0-85mS/cm |
---|---|
Initial accuracy | ±0.003mS/cm |
Resolution | <0.0001mS/cm |
Typical stability | ±0.010mS/cm per year |
RangeFootnote 2 | -5°C to 35°C |
---|---|
Initial accuracy | ±0.002°C |
Resolution | <0.00005°C |
Typical stability | ±0.002°C/year |
Time constant | <0.1s |fast, <1s standard |
(2) A wider temperature range is available upon request. Contact RBR for more information.
RangeFootnote 3 | 20 / 50 / 100 / 200 / 500 / 750dbar (plastic) 1000 / 2000 / 4000 / 6000 / 10000mdbar (Ti) |
---|---|
Initial accuracy | ±0.05% full scale |
Resolution | <0.001% full scale |
Time constant | <0.01s |
Typical stability | ±0.05% full scale per year |
(3) Recommended depth for wave measurements is less than 50m.
Light source | 880nm |
---|---|
Time Constant | 0.1s |
Linearity | <2% deviation for 0-1250 FTU |
Excitation | 470nm / 685nm (chlorophyll a) 370nm / 440nm (cDOM) |
---|---|
Time Constant | 0.1s |
Range | 0 to 600% |
---|---|
Initial accuracy | ±2% O2 saturation |
Resolution | 1% of saturation |
Response Time | ~10s, 90% step change at 20°C |
Contact RBR for other sensor options.
