RBRduo BPR | Bottom Pressure Recorder

A combination of the RBRduo two-channel logger and the Paroscientific Digiquartz® pressure and temperature transducer.

  • ~30M readings standard; up to ~120M readings optional
  • External power option
  • Short integration times
  • Extremely high resolution

See also:

The RBRduo BPR logger is our dual channel logger built on the years of experience RBR has creating reliable and easy-to-use instruments. The RBRduo BPR is a submersible depth logger (sonde, recorder) that is self-contained, accurate and autonomous.

Main Features
  • Up to 30 million readings standard; up to ~120M readings optional
  • Short integration times with 10ppb resolution
  • 0.01% accuracy
  • Long term stability
  • USB 2.0 download speed and convenience
  • RS-232 and RS-485 support for telemetry and long cable usage

The depth channel of the RBRduo BPR is calibrated to an accuracy of ± 0.01% full scale Calibration constants are stored in the logger and recalibration is easily carried out by the end-user. The RBRduo BPR is available to depth ratings up to 7000m.

Each unit employs Paroscientific Digiquartz® absolute pressure gauge, with ranges selectable from 10 dBar (10 metres of water) to 7,000 dBar (7000m) making the unit suitable for a wide range of applications from borehole testing and groundwater monitoring to deep ocean. For groundwater measurement, a barometric reference may be used to record the atmospheric pressure over the local area.



Power 16 CR123A 3V cells
External Power 12 or 24 VDC (optional)
Communication USB 2.0 or RS-232/485
Storage ~30M readings standard; up to ~120M readings optional
Clock accuracy ±60 seconds/year
Depth rating 740m or 10,000m
Logger Diameter 60.3mm
Logger Length  395mm without sensors
Weight ~2.7kg
 Sensor size (<1000m)  ~230mm x Ø90mm
 Sensor size (>1000m)  ~250mm x Ø41mm
 Sensor weight dry (>1000m)  ~1.58kg, 10 to 270m (2.26kg – 700m)
 Sensor weight dry (>1000m) ~1.156kg
Temperature Sensor
Range -2°C to 45°C
Pressure (Depth) Sensor
Range 10 to 7,000m (dbar)
Overpressure 1.2 times rated pressure
Initial accuracy ±0.01% full scale
Resolution 10ppb full scale (1s integration)
Typical Stability See Paroscientific specifications
Thermal Sensitivity <0.0008% full scale°C
Hysteresis ≤±0.01% full scale
Repeatability ≤±0.01% full scale