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RBRmaestro3: multi-channel logger
Our most flexible, option-packed, multi-channel logger.
- Five to ten integrated channels
- 240M readings
- Up to 16Hz sampling
- USB-C download
- Twist activation
- Wi-Fi option
- Realtime communications
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
The RBRmaestro³ 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 RBRmaestro³ 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
| 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 | ±60 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 |
| Range | 0-85mS/cm |
|---|---|
| Initial accuracy | ±0.003mS/cm |
| Typical stability | 0.010mS/cm/year |
| Resolution | 0.0001mS/cm |
| RangeFootnote 1 | -5°C to 35°C |
|---|---|
| Initial accuracy | ±0.002°C |
| Resolution | <0.00005°C |
| Time constant | <0.1s | fast, <1s standard |
| Typical stability | 0.002°C/year |
(1) A wider temperature range is available upon request. Contact RBR for more information.
| RangeFootnote 2 | 20 / 50 / 100 / 200 / 500 / 750dbar (plastic) 1000 / 2000 / 4000 / 6000dbar (Ti) |
|---|---|
| Initial accuracy | ±0.05% full scale |
| Resolution | <0.001% full scale |
| Time constant | <0.01s |
| Typical stability | ±0.05% full scale per year |
(2) Recommended depth for wave measurements is less than 50m.
| Light source | 880nm |
|---|---|
| Time Constant | 0.1s |
| Linearity | <2% deviation for 0-1250 FTU |
| Excitation | 470nm / 685nm (chlorophyll a) 370nm / 440nm (cDOM) |
|---|---|
| Time Constant | 0.1s |
| Range | 0 to 600% |
|---|---|
| Initial accuracy | ±2% O2 saturation |
| Resolution | 1% of saturation |
| Response Time | ~10s, 90% step change at 20°C |
Contact RBR for other sensor options.
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