RBRduo³ BPR | Bottom Pressure Recorder

A combination of the RBRduo³ two-channel logger and the Paroscientific Digiquartz® pressure and temperature transducer .

  • 240M readings
  • Up to 20Hz sampling rate
  • USB-C download
  • 10ppb resolution
  • External power option
  • Short integration times

See also:
RBRvirtuoso³|deep

The RBRduo³ BPR logger is a dual channel logger built on the years of experience RBR has creating reliable and easy-to-use instruments. The RBRduo³ BPR is a submersible depth logger that is self-contained, accurate and autonomous.

Main Features
  • 240M readings
  • Short integration times with 10ppb resolution
  • 0.01% accuracy
  • Long term stability
  • USB-C download
  • RS-232 and RS-485 support for telemetry and long cable usage

The depth channel of the RBRduo³ 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 RBRduo³ 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.

Physical
Power 8 AA cells
External Power 12 VDC nominal
Communication USB-C or RS-232/485
Storage 240M readings
Clock drift ±60 seconds/year
Depth rating 750m or 7000m
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 10,000m (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