| Additional information | |
|---|---|
| RBR Coda T | Parameter(s): Temperature |
| RBR Coda D | Parameter(s): Pressure, depth |
| RBR Coda T.D | Parameter(s): Temperature, depth |
| RBR Coda T.ODO | Parameter(s): Dissolved Oxygen, temperature |
| RBR Coda Tu | Parameter(s): Turbidity |
| RBR Coda chl-a | Parameter(s): Chlorophyll-a |
| RBR Coda OpH | Parameter(s): Optical pH, temperature |
| RBR Coda PAR / rad | Parameter(s): PAR, underwater light |
RBR Coda | Compact Underwater Sensors
Compact sensors for real-time temperature, depth, water quality and underwater light measurements, ready to integrate into your monitoring system.
From tracking oxygen levels to measuring light beneath the surface, RBR Coda helps you bring the measurements you need into one system. Choose from temperature, pressure, dissolved oxygen, turbidity, chlorophyll-a, pH and underwater light sensors to suit your application.
Compact designs and low power consumption make these sensors practical for moorings, profiling equipment and underwater platforms. External power and an RS-232 connection let you collect readings through a compatible instrument or your own monitoring system. Explore the options below to find the right sensor for your project.
Temperature | RBR Coda T
Track small temperature changes with RBR Coda T. Its compact design fits into moorings, profiling equipment and underwater vehicles, with fast sampling options for capturing changes as your platform moves through the water.
Key features
- Initial temperature accuracy of ±0.002°C.
- Standard calibrated range of -5°C to 35°C, with wider ranges available on request.
- Standard sampling at 2Hz, with fast options up to 32Hz.
- Depth ratings up to 1700m in plastic or 6000m in titanium.
- RS-232 output with a 6–18V external power supply.
Pressure and depth | RBR Coda D
Monitor water levels or follow changes in depth with RBR Coda D. A choice of pressure ranges helps you match the sensor to your application, from stream gauging and harbour monitoring to deep-water deployments.
Key features
- Initial pressure accuracy of ±0.05% full scale.
- Pressure resolution below 0.001% full scale.
- Standard sampling at 2Hz, with fast options up to 32Hz.
- Shallow-water ranges up to 1000m, with titanium configurations up to 6000dbar.
- RS-232 output with a 6–18V external power supply.
A tide configuration provides burst sampling up to 16Hz for tidal measurements.
Temperature and depth | RBR Coda T.D
Record temperature and pressure together with RBR Coda T.D. Combining both measurements in one sensor helps you relate temperature changes to depth while keeping your installation compact.
Key features
- Initial temperature accuracy of ±0.002°C.
- Standard calibrated temperature range of -5°C to 35°C.
- Initial pressure accuracy of ±0.05% full scale.
- Standard sampling at 2Hz, with fast options up to 32Hz.
- Plastic or titanium housing, with pressure ranges up to 6000dbar.
RS-232 output connects the sensor to your monitoring system, while an optional tide configuration supports burst sampling up to 16Hz.
Dissolved oxygen and temperature | RBR Coda T.ODO
Follow changes in oxygen availability alongside water temperature with RBR Coda T.ODO. Optical oxygen measurement supports habitat studies and water quality monitoring, with response options to suit profiling or longer deployments.
Key features
- Measures temperature, oxygen concentration and oxygen saturation.
- Oxygen measurement range of 0–1000µmol/L, calibrated over 0–500µmol/L.
- Initial temperature accuracy of ±0.002°C.
- Sampling up to 1Hz, with fast, standard and slow sensor response options.
- Depth rating of 6000m.
The slow-response version can be used with a wiper to help manage biofouling during extended deployments.
Turbidity | RBR Coda Tu
Track changes in water clarity across clear and sediment-rich conditions with RBR Coda Tu. Two independent optical channels combine sensitivity at low turbidity with the ability to measure much higher levels, helping you follow changing conditions with one sensor.
Key features
- Turbidity channel calibrated over 0–1000FTU, with a detection limit of 0.005FTU.
- Turbidity measurement range of 0–1500FTU, with a non-linear response above 1000FTU.
- Optical backscatter channel calibrated over 1000–4000FTU, with a measurement range up to 20,000FTU.
- Sampling up to 32Hz.
- Titanium housing rated to 6000m.
The backscatter response becomes non-linear below 500FTU and above 15,000FTU. Sapphire windows support cleaning with a compatible wiper to help control biofouling.
Chlorophyll-a | RBR Coda chl-a
Monitor chlorophyll-a fluorescence to help investigate changes in phytoplankton activity. RBR Coda chl-a combines sensitivity to low concentrations with fast sampling, making it suitable for both fixed monitoring and measurements through the water column.
Key features
- Chlorophyll-a measurement range of 0–500µg/L.
- Calibrated range of 0–50µg/L.
- Detection limit of 0.020µg/L.
- Sampling up to 32Hz.
- Titanium housing rated to 6000m.
The calibrated range and detection limit are scaled for in vivo fluorescence response. Sapphire windows support cleaning with a compatible wiper during longer deployments.
Optical pH and temperature | RBR Coda OpH
Follow changes in seawater pH with RBR Coda OpH. Designed for short- to mid-term deployments, it combines optical pH sensing with temperature measurement for moored studies or integration into underwater platforms.
Key features
- Measurement range of 7–9pH on the oceanographic total pH scale.
- Initial pH accuracy of ±0.05pH within pH 7.5–9, at 35PSU and atmospheric pressure.
- Built-in temperature measurement with initial accuracy of ±0.002°C.
- Sampling up to 2Hz.
- Titanium housing rated to 6000m.
Salinity and pressure affect the pH measurement, so these conditions need to be accounted for when configuring your system and interpreting the data.
PAR and underwater light | RBR Coda PAR / rad
Measure the light available for photosynthesis or investigate how particular wavelengths travel through the water. RBR Coda PAR measures across the photosynthetically active spectrum, while RBR Coda rad measures selected narrow wavebands for more targeted optical studies.
Key features
- PAR measurement across 400–700nm.
- PAR full-scale range of at least 0–5000µmol/m²/s.
- Narrow-band radiometer options with selected centre wavelengths from 380–560nm, with other options available on request.
- Sampling up to 16Hz.
- Depth ratings up to 1000m in plastic or 2000m in titanium.
Both options support moored and profiling applications, with RS-232 output for connection to your monitoring system.
Need help choosing? Get in touch and we’ll help find the right sensor for your project.
| Additional information | |
|---|---|
| RBR Coda T | Parameter(s): Temperature |
| RBR Coda D | Parameter(s): Pressure, depth |
| RBR Coda T.D | Parameter(s): Temperature, depth |
| RBR Coda T.ODO | Parameter(s): Dissolved Oxygen, temperature |
| RBR Coda Tu | Parameter(s): Turbidity |
| RBR Coda chl-a | Parameter(s): Chlorophyll-a |
| RBR Coda OpH | Parameter(s): Optical pH, temperature |
| RBR Coda PAR / rad | Parameter(s): PAR, underwater light |