RBRsolo³ T | Temperature Logger

Our most compact, lightweight, and versatile single channel temperature logger.

  • Any AA battery
  • Standard sampling up to 2Hz, optionally up to 32Hz
  • Up to 25M measurements
  • USB-C download
  • Cabled RBRcoda³ variant available


The RBRsolo³ T is one of RBR’s most compact, lightweight and versatile single channel recorders. Its small compact size lends itself to various applications from mooring, bore holes, profiling, or towed arrays. This single channel submersible temperature logger is ideal for long term deployments, harsh environments or anywhere where size is a concern. No other temperature logger on the market combines this level of accuracy with the ability to record 25M readings on a single battery. The fast sampling option provides the additional capability to sample at 2Hz, 4, 16, and 32Hz.

The RBRsolo³ T is calibrated to an accuracy of ±0.002ºC (ITS-90 and NIST traceable standards). The standard thermistor has a time constant of approximately one second (100ms for the fast thermistor option).

The RBRsolo³ T has a measurement range of -5°C to +35°C in its standard calibration. However, it can be calibrated from -40°C to +50°C. The housing has a depth rating of 1700m, whereas the RBRsolo³ T|deep can go up to 10km deep.

|fast16 2, 4, 8, or 16Hz sampling
|fast32 2, 4, 8, 16, or 32Hz sampling
|deep Explore up to 10km deep with the RBRsolo³ T |deep
RBRcoda³ T

Realtime variant (no internal memory or power)
Power Any AA cell
Communication USB-C
Clock drift ±60 seconds/year
Depth rating 1700m OSP and over 10km titanium
Diameter 25.4mm
Length 240mm
Weight (air) 126g
Weight (water) 20g
Temperature Sensor
Calibrated measurement range -5°C to 35°C
Initial accuracy ±0.002°C
Resolution <0.00005°C
Time constant ~1s (standard) or ~0.1s (optional)
Typical stability 0.002°C/year
Sampling rates and autonomy (2Hz) 30M samples, 180 days
Sampling rates and autonomy (16Hz) 120M samples, 100 days
Sampling rates and autonomy (32Hz) 120M samples, 50 days