RBRsolo³ DO, Tu, or PAR | Single Channel Loggers

Our most compact, lightweight, and versatile dissolved oxygen, turbidity, and PAR loggers.

  • Any AA battery
  • Standard sampling up to 2Hz for DO & PAR, and optionally up to 32Hz
  • USB-C download
  • Cabled RBRcoda³ variant available


Whether moored, towed, or profiling, the RBRsolo³ DO, Tu, and PAR instruments are easy to configure for your optimal sampling regime.

  • Small and streamlined for towing or profiling
  • Flexible measurement schedules
  • Dataset export to MatlabTM, ExcelTM, or text files for easy post-processing
Options for DO, Tu, & PAR
|fast16 1s to 24hr and 2, 4, 8, or 16Hz sampling
RBRcoda³ Realtime variant (no internal memory or power)
Power Any AA cell
Communication USB-C
Clock drift ±60 seconds/year
Depth rating 1,700m OSP and 10,000m titanium
Diameter 25.4mm
Length ~210 to 240mm
Weight (air) Varies per sensor
Weight (water) Varies per sensor
Dissolved Oxygen Sensor (Oxyguard®)
Calibrated measurement range 0 to 600%
Initial accuracy ±2% O2 saturation (5°C to 25°C)
Resolution 1% of saturation
Depth rating 1700m
Response Time ~10s, 90% step change at 20°C
Sample capacity (2Hz or slower) ~15M readings
Turbidity Sensor (Seapoint)
Light source 880nm
Time Constant 0.1s
Linearity <2% deviation 0-750 FTU
 Depth rating (OSP)  1700m
 Depth rating (Titanium)  6000m
Storage Up to 65k readings
PAR Sensor (Li-Cor)
Measured waveband  400-700nm
Models  1 hemisphere or omnidirectional
 Depth rating (1 hemisphere)  560m
 Depth rating (omnidirectional)  350m
Sample capacity (2Hz or slower)  ~13M readings