RBRmaestro3: multi-channel logger

Our most flexible, option-packed, multi-channel logger.

RBRmaestroยณ

Available sensors:

Conductivity (C), Temperature (T), Pressure (D), Dissolved Oxygen (DO), Optical Dissolved Oxygen (ODO), Photosynthetically Active Radiation (PAR), Radiometer (rad), Turbidity (Tu), Fluorescence (Fl), pH, Oxidation-Reduction Potential (ORP), Methane, Carbon Dioxide, Transmittance, Voltage

Features & Configurations

Wi-Fi
ready

TWIST ACTIVATION

240M READINGS

UP TO 32Hz SAMPLING

USB-C Download

Realtime Communications

The RBRmaestroยณ multi-channel instrument supports up to ten sensors on a single platform. A diversity of sensor configurations allows it to be fine-tuned for a wide variety of applications. Variants with pressure, temperature, conductivity, radiometer, PAR, and turbidity sensors are also available in titanium housing, designed to endure harsh conditions.

Available for both autonomous deployment and water column profiling, the RBRmaestroยณ supports data and power connections for remote access. All calibration coefficients are stored in the instrument, and re-calibration by the end-user is possible for several sensors.

Optional mooring clamps and cages are available. Rugged transit cases are recommended.

Optional configurations

  • Wi-Fi communication
  • External data and power connection via connectorised end-caps
  • | fast8, | fast16 sampling for profiling
  • | tide16, | wave16 variants with wave burst and tidal averaging
  • | deep variants in titanium housing for depths up to 6000m

Specifications

Physical
Storage 240M readings
Power 8 AA cells (alkaline or lithium iron)
External power 4.5 to 30V
Communication USB-C or RS-232/485
Clock drift ยฑ60 seconds/year
Housing Plastic or titanium
Diameter 63.3mm (plastic), 60.3mm (Ti)
Length Configuration dependent
Weight Configuration dependent
Depth rating Up to 6000m (configuration dependent)
Sampling rate 2Hz; options up to 16Hz
Conductivity
Range 0-85mS/cm
Initial accuracy ยฑ0.003mS/cm
Typical stability 0.010mS/cm/year
Resolution 0.0001mS/cm
Temperature
RangeFootnoteย 1 -5ยฐC to 35ยฐC
Initial accuracy ยฑ0.002ยฐC
Resolution <0.00005ยฐC
Time constant <0.1s |โ€‰fast, <1s standard
Typical stability 0.002ยฐC/year

(1) A wider temperature range is available upon request. Contact RBR for more information.

Pressure (Depth)
RangeFootnoteย 2 20 / 50 / 100 / 200 / 500 / 750dbar (plastic)
1000 / 2000 / 4000 / 6000dbar (Ti)
Initial accuracy ยฑ0.05% full scale
Resolution <0.001% full scale
Time constant <0.01s
Typical stability ยฑ0.05% full scale per year

(2) Recommended depth for wave measurements is less than 50m.

Turbidity (Seapointยฎ)
Light source 880nm
Time Constant 0.1s
Linearity <2% deviation for 0-1250 FTU
Fluorescence (Seapointยฎ)
Excitation 470nm / 685nm (chlorophyll a)
370nm / 440nm (cDOM)
Time Constant 0.1s
Dissolved Oxygen Sensor (Oxyguardยฎ)
Range 0 to 600%
Initial accuracy ยฑ2% O2 saturation
Resolution 1% of saturation
Response Time ~10s, 90% step change at 20ยฐC

Contact RBR for other sensor options.

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