RBRdut ³ and RBRduo ³ are two dual parameter underwater recorders launched by RBR, aimed at providing users with richer data dimensions than single channel instruments, while maintaining a streamlined and efficient design. The RBRdut ³ series is a pre configured compact instrument, and the classic model T.D integrates temperature and pressure sensors, making it a cost-effective choice for tidal and wave monitoring. The RBRduo ³ series has a high degree of flexibility, allowing users to freely combine two sensors from over a dozen options, achieving measurements ranging from basic temperature and salinity to complex water quality parameter combinations. Both products adhere to the design concept of long endurance, large capacity, and durability, and are ideal dual parameter solutions for anchoring, navigation, and profile measurement.
RBRdut ³ T.D: Classic fixed configuration, optimized for scenarios that require synchronized high-precision temperature and pressure data.
RBRduo ³: Highly customizable, can be freely combined with nearly a hundred combinations such as conductivity and t
Both products can be equipped with | tide16 and | wave16 functions, providing professional tidal level averaging and wave pulse sampling and analysis capabilities, and directly outputting wave characteristic parameters.
RBRdut ³: Compact in size, using a single AA battery, suitable for long-term deployment.
RBRduo ³: With a large storage space of 240M and a powerful battery pack, it supports long-term observation at high sampling rates.
We offer multiple pressure resistance levels, among which the deep titanium alloy model can withstand a maximum pressure of 10000 meters, conquering the deepest waters in the world.
RBRduo ³ supports magnetic switch and Wi Fi (optional) functions, making it easy to operate.
Both are equipped with USB-C interfaces for high-speed data downloads. RBRduo ³ also supports real-time data transmission.
Technical indicators
| Parameter |
RBRduet³ T.D |
RBRduo³ |
| Physical parameters | ||
| Storage capacity | ~45M observation records | 240M measurement readings |
| Power supply | 1 AA battery | 8 AA batteries |
| External power supply | Not applicable |
4.5 - 30 V DC |
| Communication interface |
USB-C |
USB-C or RS-232/485 |
| Clock accuracy | ± 60 seconds/year | ± 60 seconds/year |
| Shell material | Plastic | Plastic or titanium alloy (Ti) |
| Diameter |
25.4 mm |
63.3 mm (plastic)/60.3 mm (titanium alloy) |
| Maximum withstand voltage | Up to 1000 meters | Up to 10000 meters (configuration related) |
| Sampling rate | Up to 16 Hz (wave mode) | 2 Hz; maximum 32 Hz (configuration related) |
| Pressure | ||
| Range |
20, 50, 200, 500, 1000 dbar |
20-750 DBAR (plastic)/1000-10000 DBAR (titanium alloy) |
| Initial accuracy | ± 0.05% of full range | ± 0.05% of full range |
| Resolution | 0.001% of full scale | <0.001% of full scale |
| Temperature | ||
| Range | -5 ° C to 35 ° C (expandable) | -5 ° C to 35 ° C (expandable) |
| Initial accuracy |
±0.002°C |
±0.002°C |
| Resolution |
< 0.00005°C |
< 0.00005°C |
| Time constant | <0.1s (fast) or<1s (standard) | <0.1s (fast) or<1s (standard) |
| Conductivity | ||
| Range | Not applicable |
0 - 85 mS/cm |
| Initial accuracy | Not applicable |
±0.003 mS/cm |
| Resolution | Not applicable |
< 0.0001 mS/cm |
| Optional configurations/models | ||
| Core model/function | RBRdut ³ T.D | tide16: Temperature and pressure tide gauge RBRdut ³ T.D | wave16: Temperature pressure wave tide gauge |
RBRduo ³ C.T: Temperature and Salt Analyzer; RBRduo ³ T.D: Temperature depth meter; Support any combination of two types of sensors |
| Other options | Real time transmission model with cable (RBRcoda ³) | Wi Fi communication; External power supply and real-time output; High sampling rate (| fast8/16/32) model Tide wave (| tide16/| wave16) model; Deep sea models |
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